Ceanothus is a genus of about 50–60 species of nitrogen-fixing shrubs and small trees in the buckthorn family (Rhamnaceae). Common names for members of this genus are buckbrush, California lilac, soap bush, or just ceanothus. "Ceanothus" comes from Ancient Greek: κεάνωθος (keanōthos), which was applied by Theophrastus to an Old World plant believed to be Cirsium arvense.
Coreopsis is a genus of flowering plants in the family Asteraceae. Common names include calliopsis and tickseed, a name shared with various other plants.
Sphaeralcea is a genus of flowering plants in the mallow family (Malvaceae). There are about 40-60 species, including annuals, perennials, and shrubs. Most originate in the drier regions of North America, with some known from South America. They are commonly known as globemallows, globe mallows, false mallows or falsemallows. The name of the genus is derived from the Greek words σφαῖρα (sphaira), meaning "sphere," and αλκεα (alkea), meaning "mallow."
Palafoxia, or palafox, is a genus of North American flowering plants in the Bahia tribe within the Asteraceae.
Amorpha is a genus of plants in the pea family, Fabaceae. All the species are native to North America, from southern Canada, most of the United States (US), and northern Mexico. They are commonly known as false indigo. The name Amorpha means "deformed" or "without form" in Greek and was given because flowers of this genus only have one petal, unlike the usual "pea-shaped" flowers of the Faboideae subfamily. Amorpha is missing the wing and keel petals.
Baileya is a genus of plants in the aster family Asteraceae. All are native to the southwestern United States and to Mexico.
Croomia is a genus of primitive angiosperm herbs in the Stemonaceae family, first described as a genus in 1840.
Helianthella, the little sunflower, is a genus of North American plants in the family Asteraceae.
Eleocharis is a virtually cosmopolitan genus of 250 or more species of flowering plants in the sedge family, Cyperaceae. The name is derived from the Greek words ἕλειος (heleios), meaning "marsh dweller," and χάρις (charis), meaning "grace." Members of the genus are known commonly as spikerushes or spikesedges. The genus has a geographically cosmopolitan distribution, with centers of diversity in the Amazon Rainforest and adjacent eastern slopes of the South American Andes, northern Australia, eastern North America, California, Southern Africa, and subtropical Asia. The vast majority of Eleocharis species grow in aquatic or mesic habitats from sea level to higher than 5,000 meters in elevation.
Thamnosma is a genus of flowering plants in the rue family, Rutaceae. Plants in this genus are sometimes known by the common name desertrue.
Tiquilia is a genus of flowering plants in the borage family, Boraginaceae. The 27 species in this genus are known by the common name crinklemat. They are native to the Western Hemisphere and are mostly found in desert regions.
Geraea is a genus of the family Asteraceae from the southwestern United States and northwestern Mexico, commonly called the desert sunflower.
Orthocarpus, or owl's-clover, is a genus of flowering plants in the family Orobanchaceae (broomrapes). They are native to North America. A number of species formerly included in Orthocarpus have been transferred to the genus Castilleja, which includes the plants commonly known as Indian paintbrush. Plants of the genus are generally less than 30 centimetres (1 ft) in height.
Trichocoronis is a genus of North American aquatic plants in the tribe Eupatorieae within the family Asteraceae. Bugheal is a common name for plants in this genus.
Orbexilum, commonly called leather-root, is a genus of flowering plants in the legume family (Fabaceae). They are native to North America, where they are found in the United States and Mexico, south to Chiapas.
Pycnanthemum is a genus of herbaceous plants in the mint family (Lamiaceae). Species in this genus are often referred to as "mountain mints" and they often have a minty or thyme-like aroma when crushed. All species of Pycnanthemum are native to the United States and Canada. The center of diversity for the genus is North Carolina with 13 of the 20 species having been collected therein. Nineteen of the 20 species of Pycnanthemum occur in the Eastern US and Canada, and one disjunct species occurs in California and Oregon.
Tetragonotheca is a genus of North American plants in the family Asteraceae. Nerveray is a common name for plants in this genus.
Solidago houghtonii is a rare North American species of flowering plant in the family Asteraceae known as Houghton's goldenrod. It is native to southern Ontario, Canada and the northern United States. It is threatened by the loss and degradation of its habitat. It is a federally listed threatened species of the United States and it is designated a species of special concern by Canada's Committee on the Status of Endangered Wildlife in Canada.
Hymenoxys grandiflora is a North American species of flowering plant in the daisy family known by the common names graylocks four-nerve daisy, graylocks rubberweed, or old man of the mountain. It is native to high elevations in the Rocky Mountains of the western United States.
