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Santa Susana Tarplant

Deinandra minthornii

Deinandra minthornii (syn. Hemizonia minthornii), and known by the common names Santa Susana Tarplant or Santa Susana Tarweed, is a rare California native species of flowering plant in the Aster family.
It is endemic to western Los Angeles County and eastern Ventura County, in the Santa Susana Mountains, Simi Hills, and Santa Monica Mountains. They are part of the western Transverse Ranges region in Southern California.

This plant grows in the Coastal sage scrub and Chaparral habitats of the California Coastal Sage and Chaparral ecoregion, and the Chaparral habitat of the inland adjacent California Montane Chaparral and Woodlands ecoregion. It can be found on rocky outcroppings and in sandstone crevices, from 980 to 1,640 feet (300-500 m) in elevation.

Santa Susana Tarplant is a shrub or subshrub growing 5.9 inches to 3.3 feet (15 cm-1 m) in height. The stems are hairy, glandular, and leafy. The thick leaves are linear, smooth-edged or with a few teeth, and are glandular and hairy to bristly. The phyllaries lining the flower heads are coated in glands. The head contains four to eight yellow ray florets and several yellow disc florets.

Deinandra minthornii is an endangered species, listed as a Threatened Species by the California State Department of Fish and Game, as an Imperiled Species under the California Endangered Species Act-CESA, and is on the California Native Plant Society Inventory of Rare and Endangered Plants of California. There are about 20 occurrences/populations of the plant, but several have not been observed recently.

Pacific Bleeding Heart

Dicentra formosa ssp. formosa

Pacific Bleeding Heart (Dicentra formosa ssp. formosa) is the more common subspecies of Dicentra formosa. It is a native perennial herb that grows in central and northern California. Leaves are finely divided and fernlike, growing from the base of the plant. Flowers are pink, red, or white and heart-shaped and bloom in clusters at the top of leafless, fleshy stems above the leaves from mid-spring to autumn, with peak flowering in spring. The four petals are attached at the base. The two outer petals form a pouch at the base and curve outwards at the tips. The two inner petals are perpendicular to the outer petals and connected at the tip. There are two tiny, pointed sepals behind the petals. Seeds are borne in plump, pointed pods. The plant self-seeds readily. It frequently goes dormant for the summer after flowering, emerging and flowering again in autumn.

This species is frequently confused with and sold as Dicentra eximia, which has narrower flowers and longer, more curved outer petal tips. D. formosa is related to Lamprocapnos spectabilis, another popular plant called "bleeding heart", which was formerly placed in the same genus. There are two subspecies: Ssp. formosa has leaves glaucous beneath and never glaucous above, flowers purple pink to pink or white. It grows on the western slope of Sierra Nevada, Coast Ranges to central California, Cascades, extreme southwestern British Columbia. Ssp. oregana has leaves that are glaucous above and beneath, flowers cream or pale yellow. It grows in a small area of northwestern California and southwestern Oregon.

In warmers areas in its range, it prefers shade. In cooler areas in its range, it prefers more sun.

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