Antirrhinum cornutum (syn. Sairocarpus cornutus) is an uncommon species of New World snapdragon known by the common name spurred snapdragon. It is endemic to northern California, where it grows in the inland mountains and the northern reaches of the Central Valley. This is an annual herb producing hairy, erect, non-climbing stems. Solitary flowers grow in the leaf axils along the stem. Each hairy-lipped snapdragon flower is purple-veined white and about a centimeter long.

Antirrhinum coulterianum (syn. Sairocarpus coulterianus) is a species of New World snapdragon known by the common name Coulter's snapdragon. It is native to southern California and Baja California, where it grows in desert shrublands and in the coastal hills and mountains, especially in areas that have recently burned. This is an annual herb producing an erect stem which often clings to objects or other plants for support. It is mostly hairless, except for the flower cluster at the top, which can be quite woolly. Leaves are sparse and generally linear and there is often a basal rosette of leaves at the base of the stem; this is the only Antirrhinum that forms such a rosette. The top of the mostly naked stem is occupied by a raceme flower cluster of white snapdragon flowers, which are often tinted with lavender or pink, especially when newly opened. Each flower is about a centimeter wide.

Antirrhinum filipes (syn. Neogaerrhinum filipes) is a species of New World snapdragon known by the common name yellow twining snapdragon. It is native to the deserts of the southwestern United States and northern Mexico. This is a hairless annual herb growing long, thin, vinelike stems which climb on objects, including other plants, for support. The inflorescence is composed of a tendril-like pedicel which may be up to 10 centimeters long and coils tightly to help the plant climb. At its tip is a single snapdragon flower which is bright yellow to gold in color, dotted with dark red, and just over a centimeter long.

Antirrhinum kelloggii (syn. Neogaerrhinum strictum) is a species of New World snapdragon known by the common name Kellogg's snapdragon. It is native to the coastal hills and mountain ranges of California and Baja California, where it grows in many local plant communities, especially in areas that have recently burned. This is a thin, sprawling annual herb which sometimes becomes vine-like, climbing nearby objects or other plants. The inflorescence consists of a solitary flower on a very long, strongly coiling pedicel up to 9 centimeters long. The flower at the tip is a dark-veined purple snapdragon over a centimeter wide. The fruit is a dehiscent capsule containing many bumpy seeds.

Antirrhinum multiflorum (syn. Sairocarpus multiflorus) is a species of New World snapdragon known by the common name Sierra snapdragon. It is endemic to California, where it is known from the central Coast Ranges, the Transverse Ranges, and one section of the Sierra Nevada foothills. It grows on lower-elevation mountain slopes and springs up in disturbed and recently burned areas. This is an annual or perennial herb producing a hairy, erect stem which often has a woody base. It does not cling or climb like some other snapdragon species. Small, pointed leaves are arranged alternately about the tall stem. The raceme flower cluster occupies the top of the stem with many pink or red snapdragon flowers between one and two centimeters long each.

Antirrhinum nuttallianum is a species of New World snapdragon in the Plantaginaceae family known by the common names Nuttall's Snapdragon. It is native to southern California and Baja California, where it can be found from the immediate coastline to the inland coastal ranges. This is an annual or biennial herb producing an erect, vinelike stem which sometimes clings to objects for support, but does not twine as tightly as many other snapdragons. The flowers are veined light purple with white patches and around a centimeter long. Each is borne on a short pedicel.

Nuttall's Snapdragon (Antirrhinum nuttallianum ssp. nuttallianum) is a native annual or perennial herb that grows in Southern California, primarily in the South Coast, the Transverse Range and Peninsular Range regions. It tends to grow in dunes and rocky or disturbed or recently burned places, at elevations from 0-4300 feet.

Antirrhinum virga (syn. Sairocarpus virga) is a species of New World snapdragon known by the common name tall snapdragon. It is endemic to the North Coast Ranges of northern California, where it grows in rocky chaparral, sometimes on serpentine soils. This is a hairless perennial herb producing erect, non-climbing stems from a woody caudex. The inflorescence is a raceme atop the stem filled loosely with pink snapdragon flowers. Each flower is between one and two centimeters long.

Anulocaulis annulatus is a species of flowering plant in the four o'clock family known by the common name valley ringstem. It is endemic to the Mojave Desert of California, especially in the vicinity of Death Valley. This is a perennial herb growing a number of thin, erect stems sometimes exceeding a meter in height from a thick caudex. The smooth stems have darkened internodes at intervals which are glandular and sticky. The leaves are mostly located at the base of the plant. Each has a short petiole and a thick, bumpy blade up to 10 centimeters wide. The leaf is coated in large, stiff hairs with glandular bases. The branching inflorescence bears clusters of very hairy, tubular flowers. Each flower is just under a centimeter long with a greenish throat and a striped pink face. The fruit is a small, hard body about half a centimeter long.

Aphanes occidentalis is a species of plant in the Rosaceae family. It is native to California. There is some confusion about the varieties and species in Aphanes, but the Second Edition of the Jepson Manual recognizes this species. Jepson Manual

Aphanisma is a monotypic genus which contains the sole species Aphanisma blitoides, a rare annual plant known by the common names San Diego coastalcreeper or simply aphanisma. This is a beach-dwelling plant native to the coastline of Baja California and southern California, including the Channel Islands. It is a succulent saline-adapted plant found in sand or scrub at the immediate coastline. It has many thin, sprawling stems, few reduced green leaves, and tiny flowers. The older stems are bright red. This plant is becoming more rare due to the disappearance of its coastal habitat. It is extirpated from much of its native range.

Apiastrum is a monotypic genus of flowering plant in the Apiaceae, containing the single species Apiastrum angustifolium, which is known by the common name mock parsley. It is native to California and Baja California, where it is resident in many types of habitat. This is an annual herb producing a branching stem up to half a meter tall from a taproot. Leaves are plentiful along the stem, each up to about 5 centimeters long and split into many narrow lobes. Several inflorescences arise from the stem, often but not always from leaf axils. The inflorescence is a compound umbel of tiny flowers each with five pointed white petals.

Apocynum androsaemifolium (Fly-trap dogbane, Spreading dogbane) is a flowering plant in the Gentianales order. The plant is common in North America, and is widespread across most of the United States and Canada, and in Alaska, California, and Northeast Mexico. Apocynum androsaemifolium has branching stems, hairs on the underside of the leaves, and no hair on the stems. Milky sap appears on broken stems. Leaf margin is entire and leaf venation is alternate. Its leaves appear as pointed ovals, while its flowers appear terminally on a stalk. The plant is poisonous, due to the cardiac glycosides it contains. Subspecies and Varieties: Subspecies and varieties include: Apocynum androsaemifolium subsp. androsaemifolium - E Canada, W United StatesApocynum androsaemifolium var. griseum (Greene) Bég. & Belosersky - Ontario, British Columbia, Washington State, Oregon, Idaho, Indiana, MichiganApocynum androsaemifolium var. incanum A. DC. - widespread in Canada, United States, NE MexicoApocynum androsaemifolium var. intermedium Woodson - ColoradoApocynum androsaemifolium subsp. pumilum (A. Gray) B. Boivin - British Columbia, Washington State, Oregon, Idaho, California, Utah, Montana, Wyoming, NevadaApocynum androsaemifolium var. tomentellum (Greene) B. Boivin - British Columbia, Washington State, Oregon, Idaho, California, NevadaApocynum androsaemifolium var. woodsonii B. Boivin - Alberta, British Columbia, Washington State, Wyoming, Nevada, Idaho

Dogbane (Apocynum cannabinum) is a perennial herb in the Apocynaceae (Dogbane) family native across much of North America. It typically grows in open, sunny areas such as streambanks, roadsides, and meadows, especially in moist or seasonally wet soils. As the common name suggests, dogbane is toxic to dogs, livestock, and humans if ingested.

The plant has upright stems that can reach 3 to 5 feet tall and produce clusters of small, pale greenish-white to pink flowers in summer. The leaves are opposite and lance-shaped. Dogbane has a milky sap which can cause blisters if handled without gloves, and spreads aggressively through rhizomes. Traditionally, Indigenous communities use the strong fibers from its stems to make cordage, nets, and other items—hence the name “Indianhemp.”

This plant is useful in restoration and pollinator gardens, as it supports native bees, butterflies, and other insects. However, it can be too vigorous for small garden spaces.

Aquilegia eximia is a species of columbine known by the common name Van Houtte's columbine. It is endemic to California, where it grows in the moist forests of the Coast Ranges. This is a perennial herb growing from a thick caudex and varying in height, reaching a maximum height near 5 feet. The lower leaves are divided into large, leaflike segments up to 1.5 to 2 inches long and a lobed oval in shape. Leaves farther up the stem are not segmented but may be deeply lobed. The flower cluster bears a large, nodding columbine flower. Each flower has five bright red to orange-red flat sepals up to 1 inch long, and five petals which are hollow spurs 0.5 to 1.5 inches long, bright orange-red on the outer surface and lighter orange to yellow inside. The mouth of each hollow petal tube is up to a centimeter wide. The sepals and petals are generally reflexed back toward the stem and the five pistils and many thin stamens extend forward from the center of the flower.

The Western Columbine is also known as the Red or Crimson Columbine because of its attractive red-and-yellow-colored flowers. The blooms are very appealing to hummingbirds. Mature seedheads provide food for finches and other bird species.

This charming wildflower is a member of the buttercup family and grows in moist, shady locations. In the garden, it likes regular water, partial shade, and compost-rich, well-draining soil. It does self-sow, but deadheading will control spreading.

Tolerates almost any soil type. Prefers sun in coastal sites, and part shade in inland sites. Garden selection of stream side species (Aquilegia formosa).

Aquilegia pubescens is a species of columbine known by the common names Sierra Columbine and Coville's Columbine. It is sometimes called "yellow columbine", but this properly refers to A. flavescens. This wildflower is endemic to California, where it is a resident of the High Sierra. It is found in alpine and subalpine climates. This leafy columbine rarely reaches half a meter in height. The showy flowers are usually erect rather than drooping and are up to a centimeter wide at the mouth. The flower spurs may be up to 4 centimeters long. The sepals and petals are generally yellow, less often white or pink. The Sierra columbine may hybridize with the Crimson Columbine (A. formosa).

Desert Columbine (Aquilegia shockleyi) is a native perennial herb that grows in southern and central California.

Arabis blepharophylla is a species of rock cress known by the common names coast rock cress and rose rock cress. It is endemic to California, growing mostly in the San Francisco Bay Area and nearby low-elevation coast ranges. It is uncommon in the wild but is often grown as an attractive, sweet-scented flowering garden plant. The plant sends up thin, hairy stems from a basal rosette of fuzzy leaves. It bears small flowers with four bright purplish-pink petals. There are several cultivars bred for garden use. Often short lived in gardens.

Grows best in sandy, coarse-grained or other fast draining soil. Prefers sun in coastal sites, and part shade in inland sites. Selected for the garden.

Arabis hirsuta, known as hairy rock-cress, is a flowering plant of the genus Arabis in the family Brassicaceae. In previous North American works, it has been broadly defined to include plants native to Europe, Asia, and the northern half of North America, but is now more often restricted to a narrower subgroup restricted to Europe. This erect, 15-60 cm (6-18 inches) high hairy plant is usually unbranched, with a long spike of flowers. Lower leaves form a rosette, the stalkless upper-leaves clasp the stem. The white petals are twice as long as the sepals, flowers June-August. The fruits are cylindrical and pressed close to the stem and the slightly winged seeds are reddish brown. The hairs are stiff and forking,. The species grows on chalk slopes, dunes, hedgebanks, walls and rocks.

Holboell's Rock Cress (Arabis holboellii) is a native perennial herb that grows in northern, southern and central California. It is moderately fast growing and short-lived. It grows in an upright form to a height of 2 feet, with active growth during the spring and summer. Flowers are purple and striking, and bloom in the mid spring. Leaves are medium green and deciduous. It tends to grow at elevations from 1600-11500 feet.

Oregon Rockcress (Arabis oregana) is a rare native perennial herb that grows in Central and Northern California, primarily in the North Coast, the Klamath Mountain Range and North Coast Range regions.

Arabis pycnocarpa, the slender rock cress, is a species of flowering plant in the mustard family. It is native to North America and eastern Asia, being found in rocky, calcareous areas. It is a small perennial or biennial that has white flowers in the spring. Two varieties have been named that are distinguished by pubescence differences:

Aralia californica, known by the common name elk clover though not actually a clover, is a large herb in the family Araliaceae, the only member of that family native to California and southwestern Oregon. It is a deciduous herbaceous perennial plant growing to a height of 2-3 meters on stems which are thick but not woody. The stems bear large green pinnate or bipinnate leaves 1-2 meters long and 1 meter broad, the leaflets 15-30 centimeter long and 7-15 centimeter broad. The greenish white flowers are produced in large, ball-shaped compound umbels 30-45 centimeter diameter at the stem tip; each star-shaped flower is 2-3 millimeter diameter, and matures to small (3-5 millimeter) dark purple or black fruit, each berry containing 3-5 seeds. This plant performs best under trees or in other moist, shady areas.

The Pacific Madrone (Arbutus menziesii) is also known as the Madroo, Madroa, Bearberry, or Strawberry Tree, or simply referred to as Arbutus. It is a broadleaf evergreen tree with rich orange-red bark that peels away on the mature wood, leaving a greenish, silvery appearance that has a satin sheen and smoothness. The exposed wood sometimes feels cool to the touch. In spring, it bears sprays of small bell-like flowers, and in autumn, red berries.

Plant in a shady or partially shaded location, and avoid direct summer water. It prefers north-facing slopes especially in drier locations. Madrone is a particularly beautiful plant, but it grows very slowly in the southern, drier part of its range, where it typically grows to only 25 feet. In the northern, moister part of its range, it can grow quickly to 100 feet.

It is found on the west coast of North America, from British Columbia to California - but also scattered on the west slope of the Sierra Nevada mountains. It becomes rare south of Santa Barbara County, with isolated stands south to Palomar Mountain, San Diego County and northern Baja California, Mexico.

It is common to see madrones of about 10-25 meters in height, but, in the right conditions, the trees reach up to 30 meter. In best conditions, a madrone can also reach a thickness of 5-8 feet at its trunk, much like an oak tree.

The leaves are thick, oval, 7-15 centimeter long and 4-8 centimeter broad, and arranged spirally; they are glossy dark green above and a lighter, more grayish green beneath, with an entire margin. The leaves brown during the fall season and detach from the branches.

Pacific madrone seeds are dispersed largely by birds but also by mule deer, rodents, and gravity; robins, starlings, band-tailed pigeons feast on the ripe berries and subsequently disperse the seeds as they move about.

Arceuthobium americanum is a species of dwarf mistletoe known as American dwarf mistletoe and lodgepole-pine dwarf mistletoe. It is a common plant of western North America where it lives in high elevation pine forests. It is a parasitic plant which lives upon the Lodgepole Pine, particularly the subspecies Pinus contortus ssp. murrayana, the Tamarack Pine. This pine subspecies is most common in the Cascade Range and Sierra Nevada. The American dwarf mistletoe is a yellow-green coral-shaped structure above the surface of the tree's bark, while most of the parasite is beneath the bark. The seeds mature in late summer and disperse to nearby trees. This species has been found to explosively-disperse its seeds through thermogenesis. The parasitic plant is dioecious, meaning that it has separate male and female parts. Studies of pine needles from infected trees have shown decreased starch content in the needles of infected trees. Furthermore, differences have been found in the positioning of the vascular bundles between female infected pine trees and male infected pine trees.

Arceuthobium campylopodum is a species of dwarf mistletoe known as western dwarf mistletoe. It is native to the low to moderate elevation coniferous forests of western North America. It is a common parasite of several species of pine tree, including Jeffrey Pine, Ponderosa Pine, and Coulter Pine. The dwarf mistletoe is a greenish-yellow structure above the bark of the tree, while most of the plant is beneath the bark. Seeds mature during the fall and disperse to nearby trees. Test 1

Arceuthobium douglasii is a species of dwarf mistletoe known as Douglas-fir dwarf mistletoe. It is native to western North America from British Columbia to Texas to California, where it lives in forest and woodland as a parasite. It is found mostly on Douglas fir (Pseudotsuga menziesii) trees but occasionally on fir (Abies spp. ) as well. This is a greenish shrub which is visible as a network of scaly stems extending above the bark of its host tree. Most of the mistletoe is located inside the host tree, attached to it via haustoria, which tap the tree for water and nutrients. The leaves of the mistletoe are reduced to scales on its surface. It is dioecious, with male and female mistletoe plants producing spikes of staminate and pistillate flowers, respectively. The fruit is a sticky berry a few millimeters long which explodes to disperse the seeds it contains several meters away from the parent plant and its host tree.

Arctomecon merriamii is a species of poppy known by several common names, including desert bearpoppy, white bearpoppy, and great bearclaw poppy. It is native to the Mojave Desert of California and Nevada. This is a taprooted perennial herb producing stout, waxy stems 20 to 50 centimeters tall. Hairy pale green leaves with rounded teeth are located around the base of the plant. The inflorescence at the tip of each stem is composed of one white poppy flower with six petals up to 4 centimeters long and green sepals covered in long, white hairs. The fruit is a capsule up to 3. 5 centimeters long containing many tiny seeds.

Grows best in sandy, coarse-grained or other fast draining soil. Prefers sun in coastal sites, and part shade in inland sites. Selection of a hybrid between A. hookeri ssp hearstiorum and A. cruzensis from san Luis Obispo Co. made by Ralph philbrick and Dara Emery.

Austin Griffiths Manzanita (Arctostaphylos 'Austin Griffiths') is a large evergreen shrub in the Heath family (Ericaceae). It is a hybrid between A. densiflora 'Sentinel' and A. manzanita 'Dr. Hurd'. It was introduced in the 1980's by Native Sons Nursery in memory of conservationist and naturalist Austin P. Griffiths.

The bark is maroon to dark red, with dark red stems, glossy sage-green foliage, and large clusters of of pale soft pink flowers. One of the earliest blooming manzanitas in early winter, it provides a valuable nectar source for hummingbirds, bees, and other pollinators. The berries are consumed by many mammals, and are also a food source for Indigenous Peoples.

The natural habitats for manzanitas are chaparral and openings in oak woodlands, which provide dry, sunny locations with excellent drainage.

This manzanita is striking as a specimen or informal hedge. Although it is a large shrub, it can be shaped and grown as a small tree. It prefers a sandy loam soil but does well in clay as long as it doesn't stand in water. More garden tolerant than 'Dr. Hurd', 'Austin Griffiths' accepts occasional irrigation but is exceptionally drought tolerant once established.

Grows best in sandy, coarse-grained or other fast draining soil. Prefers sun in coastal sites, and part shade in inland sites. Selected for the garden.

A horticultural selection of hybrid manzanita, crossing Arctostaphylos bakeri ssp. bakeri and Arctostaphylos densiflora 'Sentinel'. Hybrids of Arctostaphylos bakeri ssp. bakeri and Arctostaphylos densiflora are common in the wild. This medium sized Manzanita is distinguished by it's dark red almost purple bark and deep pink flowers. This evergreen shrub delights hummingbirds, butterflies and bumblebees who are attracted to the bell shaped pink flowers that cover the plant in late December, early January. Baby Bear has a reputation as a shrub that is easy to grow and tolerates most soils. It will reach 6'-8' with a similar spread. Ideal as a hedge or foundation shrub.
Introduction: Bert Wilson, Las Pilitas Nursery Tolerates almost any soil type. Prefers sun in coastal sites, and sun or part shade in inland sites. Selected for the garden by Bert Wilson, Las pilitas Nursery believed to be A. Standfordiana x densiflora hybrid.

Emerald carpet manzanita (a hybrid of Arctostaphylos uva-ursi and Arctostaphylos nummularia) is an evergreen groundcover that forms a dense mat of lush dark green foliage. It has red stems and white flowers in January and February, possibly earlier, attracting hummingbirds.

This plant is drought adapted and easy to care for. It tolerates clay soils but likes a rich, well-draining and acidic soil to look its best. It prefers sun in coastal sites, with some summer water, and part shade in inland sites.

Grows best in sandy, coarse-grained or other fast draining soil. Prefers sun in coastal sites, and sun or part shade in inland sites. Selected for the garden by Rancho santa Ana Botanic Garden.

Hybrid of Arctostaphylos edmundsii and other undetermined manzanita species. This manzanita is a dense shrub with shiny red bark that looks great with the bright green foliage. The new growth is an attractive reddish color and the blossoms are a pretty white color. This shrub tends to grow in a round form without pruning and has very dense foliage.

Grows best in sandy, coarse-grained or other fast draining soil. Prefers sun in coastal sites, and part shade in inland sites. Selected for the garden.

Howard McMinn Manzanita (Arctostaphylos 'Howard McMinn') is an evergreen shrub in the Heath family (Ericaceae). One of the last manzanitas to bloom, this medium-sized, fine-textured shrub has small leaves and tiny pink flowers that appear in late winter through spring. As it matures it will open up and reveal more of it's twisting, red colored branches.

It is a popular choice for gardens due to its tolerance for different soils, summer watering, pruning, and shearing. Combine with other species of manzanitas for a long bloom season. Howard McMinn is tolerant of different types of soils, however, waterlogged soils should be avoided. Stop irrigating after it is established; generally after one or two years. Extra irrigation in summer will result in a short-lived shrub. Prune in fall to remove dead or dying wood, or to improve the shape. Howard McMinn takes shearing well and can be used for a hedge. Plant in full sun in coastal sites, and sun or part shade if planted inland. Although manzanitas are naturally found in chaparral or open woodlands, this cultivar is one of the most tolerant of garden conditions.

Moths, hummingbirds, butterflies are attracted to the flowers, and animals eat the berries. Deer may eat the berries but generally leave the plant alone. The fruits are also edible for people. Traditionally they were dried and ground for a type of granulated sugar. They were also used to make cider. Manzanita is spanish for little apple, and the fruits do indeed resemble little apples.

Arctostaphylos hybrid. A medium size manzanita with all the characteristics of one of the larger species packed into a smaller specimen. If you love the look of the open-form, red-barked large manzanitas but have limited space then Ian Bush will be ideal. Ian Bush is a fast growing plant to about 4' and tends to stabilize at about 5'. It has beautiful green foliage with smooth red bark. The effect of the foliage is that it causes the pink flowers to really stand out at the end of the stems. The foliage almost creates a picture frame for each of the of flower clusters. It is thought to be a hybrid of Arctostaphylos densiflora and Arctostaphylos pungens. Tolerates almost any soil type. Prefers sun in coastal sites, and sun or part shade in inland sites. possible hybrid of A.densiflora x A. pungens.

John Dourley Manzanita is much loved for its reddish bronze new growth, blush-colored berries, and muted green color of older leaves. It is a low, mounding shrub that makes a great understory for mature trees, or a foundation plant for large planters, parkways, banks, or hillsides. Manzanitas provide nectar for hummingbirds, berries for songbirds and wonderful habitat for other native critters.

Tolerates almost any soil type. Prefers sun in coastal sites, and sun or part shade in inland sites. Selected for use in the garden
(A. Silvicola x stanfordiana x bakeri hybrid).

Hybrid of undetermined manzanita species, possibly Arctostaphylos obispoensis and Arctostaphylos pajaroensis. A beautiful manzanita with blue-green leaves, red-brown bark and dark pink flowers. Perfect as a hedge, in a dry garden, on a slope or as a specimen tree. Clusters of urn-shaped flowers attract hummingbirds in winter. A very spectacular shrubby manzanita. This big shrub grows to 8' - 10' tall with a 10-15' spread. It is a hybrid of A. pajaroensis which was grown at Rancho santa Ana Botanic Garden from seed supplied by Lester Rowntree, for whom it is named. The small, urn shaped flowers are very showy, with a deep magenta pink color that contrasts with the blue grey leaves and attractive purplish trunks. Plant in full sun with good drainage with little or no water after it is established.

Hybrid, random; origin = seedd (1942) A. obispoensis x A. pajaroensis?, collected by L. Rowntree in L. Edmund's garden (1947), selected 1964; intro RSABG 1982 Grows best in sandy, coarse-grained or other fast draining soil. Prefers sun in coastal sites, and sun or part shade in inland sites. Selected for the garden. A hybrid of A. pajaroensis grown at Rancho santa Ana Botanic Garden from seed collected by Lester Rowntree.

Grows best in sandy, coarse-grained or other fast draining soil. Prefers sun in coastal sites, and sun or part shade in inland sites. Selected for the garden. Believed to be an A. densiflora hybrid.

This upright form, evergreen shrub has a showy trunk that is purple-brown and grey-green foliage.Its many pink flowers attract hummingbird,bees and pollinators in winter and early spring. Mama Bear will reach 6'-8' high and spread about 4'-6' It is though to be a natural hybrid of A. densiflora x manzanita.
Introduction: Bert Wilson, Las Pilitas Nursery Tolerates almost any soil type. Prefers sun in coastal sites, and sun or part shade in inland sites. Selected for the garden. Hybrid of A. densiflora x A. manzanita.

Grows best in sandy, coarse-grained or other fast draining soil. Selected for the garden; probable A. pechoensis hybrid introduced by Las pilitas Nursery.

Arctostaphylos imbricata is a species of manzanita known by the common name san Bruno Mountain manzanita. It is endemic to san Mateo County, California, where it is known only from six populations on san Bruno Mountain. Despite its rarity, this manzanita is not a federally listed endangered species because five of its six remaining populations are protected by the san Bruno Mountain Habitat Conservation Plan. This is a small, spreading shrub that forms in mounds. The branches are coated in long bristles tipped in resin glands. The light green, glandular leaves are round to oval with rough, bristly, dull surfaces and smooth or toothed edges about 2" long and 1" wide. The dense inflorescence is crowded with rounded, urn-shaped white flowers, each only 1/2" long. The fruit is a hairy drupe about 3/4" wide. This plant grows in the chaparral plant community. Like many other chaparral species, it requires wildfire for reproduction. Fire suppression in its native habitat is one threat to its survival.