Aeonium haworthii, also known as Haworth's aeonium or pinwheel, is a species of succulent flowering plant in the family Crassulaceae. It is grown as a houseplant in temperate regions. It has gained the Royal Horticultural Society's Award of Garden Merit, as has the cultivar ‘Variegatum’.
Cymopterus cinerarius is a species of flowering plant in the carrot family known by the common name gray springparsley. This small plant is native to the US states of California and Nevada, where it grows on the rocky talus of the Sierra Nevada. This plant has a short stem and lies against the ground or draped over rocky debris. Its distinctive leaves are only a few centimeters long and dissected into segments of a few millimeters in length. The gray-green segments are thick, pointed lobes with a bumpy textured surface and a waxy epidermal coating. From the center of this patch of leaflets sprouts an erect peduncle holding the flowers. The peduncle and the umbels of flowers are reddish-green or brown and the umbel has very large wrinkly bracts which are more visible than the actual white flower corolla.
Gratiola heterosepala is a species of flowering plant known by the common name Boggs Lake hedgehyssop.
Hastingsia serpentinicola is a species of flowering plant known by the common name Klamath rushlily. It is native to the mountains of northwestern California and southwestern Oregon, where it grows in serpentine soils. This is a perennial herb growing from a black bulb 2 to 4 centimeters long and producing an erect stem up to 50 centimeters tall. A number of long, bending leaves surround the stem at its base, and the rest of the stem is naked. The top portion of the erect stem is a narrow, pointed inflorescence of many white or greenish lilylike flowers. Each small flower has six curled perianth parts and six protruding stamens with very large anthers. The flowers fall away to leave the developing fruits, which are capsules a few millimeters wide containing black seeds.
Abronia turbinata is a species of flowering plant in the four o'clock family known by the common name transmontane sand-verbena. It is native to eastern California and Oregon and western Nevada, where it grows in desert and plateau scrub.
Lasthenia microglossa is a species of flowering plant in the family Asteraceae known by the common name smallray goldfields. It is endemic to California, where it grows in shady areas in a number of habitats.
Chorizanthe staticoides is a species of flowering plant in the buckwheat family known by the common name Turkish rugging. It is endemic to California, where it is a common member of the flora in the chaparral and scrub habitats in a number of regions.
Ammannia coccinea is a species of flowering plant in the loosestrife family known by several common names, including valley redstem, scarlet toothcup, and purple ammannia. It is native to most of the contiguous United States, with the exception of the Pacific Northwest and New England. It is generally found in moist areas, such as riverbanks and pond margins. It is weedy in some areas. This is an annual herb growing erect to heights approaching one meter or lying along the ground. Leaves are linear in shape, up to 8 centimeters long, and green to shades of deep red in color. The inflorescence is a cluster of 3 to 5 flowers growing in the leaf axils along the upper part of the stem. The rounded flower has small rose to lavender petals each a few millimeters long and protruding stamens with yellow anthers. The fruit is a rounded capsule up to half a centimeter wide containing many tiny seeds.
Chenopodium atrovirens is a species of flowering plant in the amaranth family known by the common names pinyon goosefoot and dark goosefoot.
Minuartia douglasii is a species of flowering plant in the family Caryophyllaceae known by the common name Douglas' stitchwort.
Minuartia howellii is an uncommon species of flowering plant in the family Caryophyllaceae known by the common names Howell's stitchwort and Howell's sandwort.
Minuartia pusilla is a species of flowering plant in the family Caryophyllaceae known by the common names annual sandwort and dwarf stitchwort.
Minuartia stricta is a species of flowering plant in the family Caryophyllaceae known by the common names bog stitchwort, Teesdale sandwort and rock sandwort. It has a circumboreal distribution, occurring throughout much of the northernmost Northern Hemisphere from the lower Arctic into the alpine climates of mountainous areas in temperate Eurasia and North America. It grows in several types of habitat, including meadows, marshes, heath, beaches and bars, and arctic and alpine tundra.
Sedella pumila is a species of flowering plant in the family Crassulaceae known by the common name Sierra mock stonecrop. It is native to California, where it grows in the North Coast Ranges and adjacent sections of the Central Valley to the Sierra Nevada foothills. It is a plant of vernal pools and similar habitat, growing in rocky and gravelly flats of serpentine soils, limestone, and soils of volcanic origin, often alongside mosses. This is an annual herb growing 2 to 17 centimeters high, in shades of green, yellow, and red. It has small knobby succulent leaves each a few millimeters long. The flowers atop the threadlike stems have fleshy sepals and yellowish petals a few millimeters in length. The flowers have a musty scent.
Rorippa austriaca is a species of flowering plant in the family Brassicaceae known by the common names Austrian yellow-cress and Austrian fieldcress. It is native to parts of Europe and Asia, and it is known in North America as an introduced species and sometimes a noxious weed. It can grow in disturbed habitat, such as roadsides, and in very wet habitat such as mudflats. It is a perennial herb growing upright to erect, reaching a maximum height near one meter. The branching stem bears hairless blue-green lance-shaped leaves up to 10 centimeters long. The bases of the upper leaves clasp the stem. The inflorescence is a raceme at the top of the stem and the ends of stem branches. The mustardlike flowers have small yellow petals. The fruit is a plump silique a few millimeters long, but many plants do not fruit and seed production is rare. Reproduction in this species is more often vegetative, the plants concentrating their growth in belowground tissue and spreading clonally. The root system of the plant is particularly aggressive, sending up many new plants as it spreads.
Packera bernardina is a rare species of flowering plant in the aster family known by the common name San Bernardino ragwort.
Stellaria obtusa is a species of flowering plant in the family Caryophyllaceae known by the common names Rocky Mountain chickweed, blunt-sepaled starwort, and obtuse starwort. It is native to western North America, from British Columbia and Alberta to California to Colorado, where it grows in moist areas in forests and on mountain slopes.
Boechera perstellata is a rare species of flowering plant in the mustard family known by the common names Braun's rockcress and Nevada rockcress. It is native to Kentucky and Tennessee, where it is known from perhaps 25 total populations. Most of the occurrences have few individuals, and all are deteriorating in quality. The plant grows in shady forest habitat on limestone substrates, usually near streams or rivers. This is a federally listed endangered species of the United States.
Carex concinna is a species of sedge known by the common names low northern sedge, northern elegant sedge, beauty sedge, and beautiful sedge. It is native to northern North America, where it occurs across Canada and in high elevations in the northern contiguous United States.
Eriocaulon parkeri is a species of flowering plant in the pipewort family known by the common names Parker's pipewort and estuary pipewort. It is native to eastern North America, where its distribution spans the coast from Quebec to North Carolina. It is extirpated from New York and Pennsylvania, however.
