Navarretia mellita is a species of flowering plant in the phlox family known by the common name honeyscented pincushionplant. It is endemic to California, where it is known only from several coastal and inland mountains and foothills in the central region of the state. It generally grows in moist spots in chaparral and other habitat.

Navarretia nigelliformis is a species of flowering plant in the phlox family known by the common name adobe navarretia. It is endemic to California, where it is known from the Central Valley and adjacent mountains. It grows in vernally wet depressions in clay soils, such as vernal pools. It is a hairy annual herb growing up to about 32 centimeters in maximum height. The leaves are divided into many very narrow linear or needlelike lobes. The inflorescence is a head of flowers lined with leaflike bracts with long white hairs. The flower is yellow with brown or purple spots in the throat.

Navarretia ojaiensis is a rare species of flowering plant in the phlox family known by the common name Ojai navarretia. It occurs in Ventura County, California, where it is known from the Ojai Valley, the Santa Clarita Valley, and the Santa Susana Mountains. It may also occur in the Santa Monica Mountains within Los Angeles County, but the population known from there may have been extirpated by now. It was on land that was converted to a parking lot at the home of the composer Marco Beltrami. Many of the known occurrences may no longer exist, because they are in areas that have experienced urban development. All but one of the remaining populations are in locations which are likely to be developed or altered. One population is on a slope in Agoura Hills which is slated to be cleared for the construction of the new headquarters for the Conrad N. Hilton Foundation. This is an annual herb with a spreading, upright stem growing up to 33 centimeters long. The hairy, glandular leaves have blades divided into narrow, pointed lobes lined with tiny teeth. The inflorescence has narrow, pointed bracts and sepals around the flowers which are densely coated in shiny hairs and resin glands. The tubular flower corolla is roughly a centimeter long and white in color with purple markings in the throat. The five corolla lobes are pointed and the stamens protrude from within the throat.

Navarretia peninsularis is an uncommon species of flowering plant in the phlox family known by the common names Baja navarretia or Baja pincushionplant. It is native to southern California and Baja California, where it is an occasional member of the flora in wet spots in mountain forests. It is a hairy, glandular annual herb growing up to about 25 centimeters in maximum height. The leaves are 1 to 3 centimeters long and are divided into many very narrow linear or needlelike lobes. The inflorescence is a head of flowers lined with leaflike bracts. The lavender flowers are just under a centimeter long.

Navarretia prolifera is a species of flowering plant in the phlox family known by the common names bur pincushionplant and yellow bur navarretia. It is endemic to the Sierra Nevada foothills of California, where it grows near running water. Navarretia prolifera is an annual herb with branching or whorled spreading stems up to about 16 centimeters in maximum height. The leaves are threadlike or divided into threadlike lobes. The inflorescence is a cluster of flowers surrounded by hairy leaflike bracts divided into pointed, needlelike lobes. The flower is about a centimeter long. There are two subspecies of the plant, ssp. lutea bearing yellow flowers and ssp. prolifera with yellow-throated purple flowers. The less common ssp. lutea is known only from El Dorado County, California. Navarretia prolifera is an annual herb with branching or whorled spreading stems up to about 16 centimeters in maximum height. The leaves are threadlike or divided into threadlike lobes. The inflorescence is a cluster of flowers surrounded by hairy leaflike bracts divided into pointed, needlelike lobes. The flower is about a centimeter long. There are two subspecies of the plant, ssp. lutea bearing yellow flowers and ssp. prolifera with yellow-throated purple flowers. The less common ssp. lutea is known only from El Dorado County, California.

Navarretia prostrata is an uncommon species of flowering plant in the phlox family known by the common names prostrate pincushionplant and prostrate vernal pool navarretia. It is endemic to California. The plant has a scattered distribution from the San Francisco Bay Area, through the Transverse Ranges and Peninsular Ranges, to the southern border. It is an occasional member of the flora in vernal pools and similar habitat. Navarretia prostrata is a petite annual herb sitting prostrate on the ground with a central stem and flower head and radiating stem branches bearing more heads. The hairless leaves are divided into many threadlike lobes. The inflorescence is a cluster of flowers surrounded by leaflike bracts. The flowers are just under a centimeter long, their blue or white corollas divided into narrow lobes.

Navarretia pubescens is a species of flowering plant in the phlox family known by the common name downy pincushionplant. It is native to southern Oregon and to the central mountain ranges of California, where it can be found in open mountainous habitat. It is a hairy, hairy annual herb producing a reddish or brownish stem up to about 33 centimeters in maximum length. The leaves are divided into many linear or needlelike lobes, sometimes clustered. The upper leaves are hairy, the lower generally hairless. The flower cluster is a cluster of many flowers surrounded by leaflike leafs and coated with downy or hairy hairs. Each flower is just over a centimeter long and blue in color with a purplish throat.

Navarretia rosulata is a rare species of flowering plant in the phlox family known by the common names Marin County navarretia, Marin County pincushionplant and San Anselmo navarretia. It is endemic to California, where it is known from only about 20 occurrences in Marin and Napa Counties. This plant was considered a subspecies of Navarretia heterodoxa until 1993, when it was separated and named a distinct species. It grows in coastal mountain ranges, usually in serpentine soils. It is a hairy, glandular annual herb growing up to 13 centimeters tall. It has a skunky scent. The leaves are divided into many linear lobes. The inflorescence is a cluster of many flowers surrounded by leaflike bracts and hairy, glandular sepals. The flowers are just under a centimeter long, white to lavender in color, and tube-throated.

Navarretia setiloba is a rare species of flowering plant in the phlox family known by the common names Paiute Mountain pincushionplant and Piute Mountains navarretia. It is endemic to California, where it is known from fewer than ten occurrences at the southern tip of the Sierra Nevada and adjacent Tehachapi Mountains. It is named for Piute Mountain in the Sierra near Lake Isabella, not the Piute Mountains of the Mojave Desert, which are outside its range. It grows in moist depressions in woodland and grassland habitat.

Navarretia sinistra (formerly Gilia sinistra) is a species of flowering plant in the phlox family known by the common name Alva Day's pincushionplant. It is native to the western United States, where it grows in forests and mountain chaparral habitat, often on volcanic or serpentine soils. It produces a branching, leafy stem coated in knobby glands. The leaves are sometimes deeply cut or lobed. The inflorescence produces generally 2 or 3 flowers on very thin stalks. Each flower has a pouchlike calyx of sepals which are ribbed with reddish membranous tissue between. The tubular flower has a pink corolla and a red-streaked yellow throat. The protruding stamens are tipped with blue anthers. It produces a branching, leafy stem coated in knobby glands. The leaves are sometimes deeply cut or lobed. The inflorescence produces generally 2 or 3 flowers on very thin stalks. Each flower has a pouchlike calyx of sepals which are ribbed with reddish membranous tissue between. The tubular flower has a pink corolla and a red-streaked yellow throat. The protruding stamens are tipped with blue anthers.

Navarretia squarrosa (skunkweed, California stinkweed ) is a spreading annual plant from North America which is noted for its skunk-like odour. It grows to between 10 and 60 centimeter in height and has tubular lilac pink to deep blue flowers up to 12 millimeter in diameter in dense terminal heads, encircled by a spiny sepals and leafs. The leaves are pinnately lobed and spiny. The species is native to British Columbia, Washington, Oregon, and California, and is naturalised elsewhere, including Australia and New Zealand.. It is commonly found at elevations of less than 800 meters on open, wet, gravelly flats and slopes.

Navarretia subuligera is a species of flowering plant in the phlox family known by the common names awl-leaf pincushionplant or awl-leaved navarretia. It is native to southern Oregon and northern California, where it grows in open, wet habitat, such as meadows and vernal pools. It is a hairy, purple-colored annual herb growing up to about 16 centimeters tall. The leaves are divided into many linear lobes. The inflorescence is a cluster of many flowers surrounded by leaflike bracts with awl-shaped lobes. The flowers are white and under a centimeter in length.

Navarretia tagetina is a species of flowering plant in the phlox family known by the common names marigold pincushionplant and marigold navarretia. It is native to the western United States from Washington to central California, where it grows in wet grassland habitat such as vernal pools. It is a somewhat hairy annual herb growing up to about 30 centimeters tall. The leaves are deeply divided into many spreading needlelike lobes. The inflorescence is a cluster of many flowers surrounded by leaflike bracts. The flowers are pale blue and about a centimeter long.

Navarretia viscidula is a species of flowering plant in the phlox family known by the common name sticky pincushionplant. It is endemic to California, where it can be found in the Sierra Nevada foothills and the Coast Ranges in and around the San Francisco Bay Area. It grows in moist and wet spots in mountain and hillside habitat, such as vernal pools and spring meadows. It is a hairy, glandular annual herb producing a spreading, branching stem up to about 24 centimeters tall. The leaves are strap-shaped or divided into narrow, flat or needlelike lobes. The inflorescence is a cluster of many flowers surrounded by leaflike bracts. The flowers are reddish-purple to purple and 1 to 1. 5 centimeters in length.

Neltuma odorata, commonly known as Honey Mesquite, is a species of small to medium-sized flowering tree in the legume family, Fabaceae. It is native to California, the southwestern United States and Mexico, but has been introduced to at least a half-dozen other countries. The IUCN considers it as one of the world's 100 worst invasive species. However, in California's Central Valley and deserts it is an important habitat plant for many species of wildlife. Honey Mesquite has a rounded crown and crooked, drooping branches with feathery foliage and straight, paired spines on twigs. In some settings it will remain a low growing shrub forming dense thickets that are used as refuge by rabbits, quail, and other animals. In other settings it grows as a tree that reaches 20-30 feet, rarely as tall as 50 feet. It is highly adapted to arid environments with a very deep taproot (up to 100 ft.) to reach underground water. The fruit is a nutritious "bean pod" that is valued by many animals and is eaten by Indigenous Peoples of the desert. It has spines and caution should be used when deciding where to plant it. It is an essential plant for the desert wildlife garden.

Nemacaulis is a monotypic plant genus in the buckwheat family containing the single species Nemacaulis denudata, which is known by the common names woollyheads and cottonheads. This plant is a somewhat nondescript delicate annual herb with thin, spindly, naked stems and woolly white flowerheads. It can be found in sandy habitats in California, Arizona, and northern Mexico.

Nemacladus calcaratus is a rare species of flowering plant in the bellflower family known by the common name Chimney Creek nemacladus. It is endemic to Tulare County, California, where it is known only from Chimney Creek in the southern Sierra Nevada east of Lake Isabella. It occurs in woodland habitat on sandy granitic substrate. It was first collected in 1986 and described to science as a new species in 2008. This is a petite annual herb with an angular, slightly hairy, sometimes red-tinged stem just a few centimeters long. The lance-shaped leaves are just a few millimeters long, green to red in color, and densely hairy. The inflorescence bears flowers on short, threadlike pedicels about a centimeter long. The tiny flower has five pointed lobes each 1 or 2 millimeters long, the two lowest fused to form a spur. The flower is white with dark red stripes in the throat.

Nemacladus glanduliferus is a species of flowering plant in the bellflower family known by the common name glandular threadplant. It is native to the southwestern United States and Baja California, where it grows in desert and plateau habitat. It is an annual herb producing a purplish or brownish green, branching stem up to about 25 centimeters tall. Small oval leaves occur at the base of the plant. The inflorescence is a series of zigzagging branches bearing occasional flowers on thin, erect pedicels. There is a single small bract at the base of each pedicel. The flower at the curved tip of the pedicel is just a few millimeters wide. There are five pointed sepals and five white corolla lobes, generally three in the upper lip and two in the lower.

Nemacladus gracilis is an uncommon species of flowering plant in the bellflower family known by the common names slender threadplant or slender nemacladus. It is endemic to California, where it is known from the Transverse Ranges and adjacent mountains, desert, and valley territory. It can be found in rocky and sandy areas in woodland and grassland habitat. It is a small annual herb producing an upright reddish brown stem no more than about 10 centimeters long. Small lobed oval leaves under a centimeter long occur at the base of the plant. The inflorescence is a series of branches bearing occasional flowers on thin, curving pedicels. There is a single tiny bract at the base of each pedicel. The flower is only about 2 millimeters long. It has five lavender-veined white lobes fused along the lower half.

Nemacladus interior is a species of flowering plant in the bellflower family known by the common name Sierra threadplant. It is native to the Sierra Nevada of California, and it is known from Oregon as well. It grows in mountain forest habitat. It is an annual herb producing a stiff upright purple-brown stem up to about 25 centimeters tall. Small toothed oval leaves 1 to 2 centimeters long occur at the base of the plant. The inflorescence is a zigzagging series of branches bearing occasional flowers on thin pedicels. There is a single tiny bract at the base of each pedicel. The flower is a few millimeters long. It has five triangular sepals and five corolla lobes, three lobes on the upper lip and two on the lower. The corolla is white to pale purple or pink with a thin red band and yellow spot at the base of each lobe.

Nemacladus ramosissimus is a species of flowering plant in the bellflower family known by the common name smallflower threadplant. It is native to the mountains and deserts of the southern half of California and adjacent parts of Baja California. It is a small annual herb producing a thread-thin erect brown or purplish stem up to about 32 centimeters tall. Lobed oval leaves under 2 centimeters long occur at the base of the plant. The inflorescence is a series of branches bearing occasional flowers on thin, curving pedicels. There is a single small bract at the base of each pedicel. The flower is no more than 2 millimeters long with five white lobes fused along the lower half.

Nemacladus rigidus is a species of flowering plant in the bellflower family known by the common name stoutstem threadplant. It is native to the Great Basin in the United States, where it grows in open areas, often on bare soil. It is a small annual herb producing a thin, spreading purplish stem no more than 9 centimeters long. Oval leaves up to a centimeter long occur at the base of the plant. The inflorescence is a series of zigzagging branches bearing flowers on thin, curving pedicels. There is a single tiny bract at the base of each pedicel. The flower is under 2 millimeters long. It has five red-veined white or purple-tinged lobes.

Nemacladus sigmoideus is a species of flowering plant in the bellflower family known by the common name sigmoid threadplant. It is native to the mountains and deserts around the intersection of California, Nevada, Arizona, and Baja California. It is a small annual herb producing a thin, spreading purplish or brown stem no more than 12 centimeters long. Hairy, sometimes toothed oval leaves up to a centimeter long occur at the base of the plant. The inflorescence is a series of zigzagging branches bearing flowers on thin pedicels which are sigmoid in shape. There is a single tiny bract at the base of each pedicel. The hairy flower is under 4 millimeters long. It has five yellow-tipped white lobes.

Nemacladus twisselmannii is a rare species of flowering plant in the bellflower family known by the common names Twisselmann's threadplant and Twisselmann's nemacladus. It is endemic to California, where it is known only from two locations in the Sierra Nevada. There is one occurrence each in Kern and Tulare Counties. This is a small annual herb forming cushions of foliage at ground level, the stems no more than a centimeter long. The hairy, spoon-shaped leaves are 2 to 3 millimeters long. The inflorescence is a headlike cluster of flowers on hairlike pedicels. The flower has hairy sepals one millimeter long and a white corolla up to 3 millimeters long. The fruit is a tiny capsule with a rounded end and a pointed tip.

Nemophila breviflora is a species of flowering plant in the borage family known by the common names basin nemophila, Great Basin nemophila, and Great Basin baby-blue-eyes. It is native to southwestern Canada and the northwestern United States, where it generally grows in wooded and forested areas in thickets and moist streambanks. It is an annual herb with a fleshy, somewhat prickly stem growing 10 to 30 centimeters tall. The alternately arranged leaves are divided into several wide, pointed lobes. Flowers are solitary, each on a short pedicel. The flower has a calyx of sepals each a few millimeters long, pointed, and edged with stiff hairs, and there are reflexed appendages between the sepals. The bell-shaped flower corolla is white or purple-tinged and a few millimeters wide. The fruit is a capsule which develops within the calyx of sepals and contains a single red, pitted seed.

Nemophila heterophylla is a species of flowering plant in the borage family known by the common name small baby blue eyes. It is native to Oregon and California north of the Transverse Ranges. It grows in many types of habitat, from valley chaparral to mountain talus. Nemophila heterophylla is an annual herb with a fleshy but delicate and usually hairy stem. The lower leaves are oppositely arranged and divided into several wide lobes. Upper leaves are smaller, narrower, and alternately arranged. Flowers are solitary, each on a short pedicel. The flower has a calyx of sepals each a few millimeters long, pointed, and covered with long hairs, and there are reflexed appendages between the sepals. The bowl-shaped flower corolla is white or blue and a few millimeters to over a centimeter wide. The fruit is a capsule which develops within the calyx of sepals and contains a few yellowish seeds.

Named for the five purple spots that adorn each flower petal tip, Fivespot (Nemophila maculata) is a cute and cheerful annual that's native to California's Sierra foothills. Fivespot is a member of the Borage family. It is related to Baby Blue Eyes (Nemophila menziesii), another popular native annual. But it is not related to Desert Fivespot (Eremalche rotundifolia).

Fivespot's appealing white and purple flowers bloom in early spring and attract bees, butterflies, and other insects. Fivespot is a low, compact plant, making it a good choice for containers and small beds. It likes sun or partial shade and does best in loose, nutrient-rich garden soil. Since it is native to cooler regions of California, it tolerates cold temperatures but needs afternoon shade and supplemental moisture in hot, dry climates. Fivespot seeds are often included in wildflower seed mixes and the plant will self-sow in the garden.

Baby Blue Eyes (Nemophila menziesii), a common annual of California, Oregon, and Baja California, is a popular garden plant. It is a spring-blooming wildflower that gets its name from the bright blue flowers of two of the three varieties that are recognized. One variety, var. atomaria, is found in the north coast and has almost pure white flowers.

It can occasionally be found outside its native range as an introduced species, in Alaska, for example. Baby Blue Eyes grows virtually throughout California at heights from sea level up to almost 6500 feet in many types of habitat. It is easy to grow from seed along with other annuals in a wildflower meadow or in openings between trees and shrubs.