Bruce Gregg Baldwin

Perityleae is a tribe of flowering plants in the subfamily Asteroideae. The species of its genera are native exclusively to the New World. This tribe is closely related to the Eupatorieae tribe. It was classified as a separate tribe following molecular studies of plastid DNA sequences.

Jensia is a genus of flowering plants in the family Asteraceae, endemic to California. Species Jensia rammii (Greene) B.G.Baldwin - Sierra Nevada foothills (Butte Co to Calaveras Co with report of isolated population in Tulare Co) Jensia yosemitana (Parry ex A.Gray) B.G.Baldwin - Sierra Nevada from (Nevada Co to Kern Co)

Harmonia is a genus of plants in the family Asteraceae. All 5 known species are endemic to the Coast Ranges of northern and central California. All but H. nutans grow on serpentine soils. Harmonia is related to Madia, and both genera are commonly known as tarweeds. Harmonia is an annual shrub very often with bristles and sometimes with glandular hairs as well. Hears have a single series of phyllaries, subtending 3-8 fertile ray flowers plus 7-30 fertile yellow disc flowers. Species Harmonia doris-nilesiae (T.W.Nelson & J.P.Nelson) B.G.Baldwin Klamath Mts. Harmonia guggolziorum B.G.Baldwin -

Bahieae is a tribe of plants in the family Asteraceae, mostly native to North America and Mexico. It was described by Baldwin et al. in 2002.

Arnica dealbata is a species of Californian plants in the tarweed tribe within the aster family The species is known by the common name mock leopardbane.

Ambrosia salsola, commonly called cheesebush, winged ragweed, burrobush, white burrobrush, and desert pearl, is a species of perennial shrub in the family Asteraceae native to deserts of the southwestern United States and northwestern Mexico. This species, notable for its foul smell, easily hybridizes with the white bur-sage (Ambrosia dumosa).

Monolopia congdonii (formerly Lembertia congdonii) is a rare species of flowering plant in the family Asteraceae known by the common name San Joaquin woollythread. It is endemic to California, where it is known only from the southern San Joaquin Valley and one area in nearby Santa Barbara County. It is a federally listed endangered species.

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Jensia yosemitana is a species of flowering plant in the family Asteraceae known by the common name Yosemite tarweed. It is endemic to California, where it has a scattered distribution across the Sierra Nevada and its foothills. Some of the populations lie inside Yosemite National Park. Jensia yosemitana is an annual herb with a slender stem up to 25 centimeters (10 inches) tall. The hairy to bristly leaves are 1 to 3 centimeters (0.4-1.2 inches) long and located all along the stem. The inflorescence produces flower heads on thin, threadlike peduncles. The head generally has 2-8 yellow ray

Jensia rammii is a species of flowering plant in the family Asteraceae known by the common name Ramm's madia. It is endemic to California, where it is limited to the northern slopes of the Sierra Nevada and its foothills. Jensia rammii is an annual herb with a hairy, glandular, branching stem up to 60 centimeters (2 feet) tall. The inflorescence produces flower heads on long peduncles. The head has 5-12 yellow ray florets up to a centimeter (0.4 inches) long with lobed tips. The 16–65 yellow disc florets at the center have black anthers. The fruit is an achene a few millimeters long.

Harmonia stebbinsii (syn. Madia stebbinsii) is a species of flowering plant in the family Asteraceae known by the common name Stebbins' tarweed, or Stebbins' madia. It is endemic to northern California, where it is limited to the Klamath Mountains and adjacent slopes of the North Coast Ranges. It is a member of the serpentine soils plant community in these mountains, found at elevations of 1100–1600 meters. It is a rare annual herb producing a bristly stem up to about 25 centimeters tall studded with black resin glands. Its bristly leaves grow up to about 2 centimeters long and are mostly

Harmonia doris-nilesiae is a species of flowering plant in the family Asteraceae known by the common names serpentine tarweed and Niles' madia. This plant was first described in science in 1985, when it was named Madia doris-nilesiae after the California botanist and teacher Doris Niles. It and several others were moved to the new genus Harmonia in 1999.

Dubautia kalalauensis is a rare species of flowering plant in the family Asteraceae. It is endemic to Hawaii where it is known only from the island of Kauai. There is only a single known population composed of 26 plants. It was federally listed as an endangered species of the United States in 2010. Like other Dubautia this plant is known as na`ena`e. This member of the silversword alliance was part of Dubautia laxa until 2005, when it was separated and described as a new species. The population grows in wet mountain forest habitat in the understory of ʻōhiʻa lehua (Metrosideros polymorpha)

Deinandra minthornii — (syn. Hemizonia minthornii) — is a rare California species of flowering plant in the family Asteraceae known by the common name Santa Susana tarplant, or Santa Susana tarweed. It is listed as a rare species by the California Department of Fish and Wildlife and on the California Native Plant Society Inventory of Rare and Endangered Plants of California.

Deinandra increscens is a species of flowering plant in the family Asteraceae known by the common name grassland tarweed. It is endemic to California, where it has been found primarily in Monterey, San Luis Obispo and Santa Barbara Counties (including Santa Cruz and Santa Rosa Islands). A few isolated populations have been reported from Kern and Merced Counties, but these are from urban areas (Cities of Merced and Bakersfield) and probably represent cultivated specimens. Deinandra increscens is an annual up to 100 cm (40 inches) tall. It has numerous flower heads, often tightly clumped

Deinandra halliana, Hall's tarplant, is a California species of plants in the tribe Madieae within the family Asteraceae. It has been found in the Coast Ranges of Central California, in Monterey, Fresno, San Benito, and San Luis Obispo Counties. Deinandra halliana is an annual herb up to 120 cm (4 feet) tall. It produces numerous flower heads in an open array, each head containing 8-14 yellow ray florets and as many as 60 disc florets with yellow corollas but yellow or brown anthers.

Deinandra conjugens (syn. Hemizonia conjugens) is a rare species of flowering plant in the family Asteraceae known by the common names Otay tarplant and Otay tarweed. It is native to a small section of far northern Baja California in Mexico, its range extending north into San Diego County, California, in the United States. One isolated population has been reported from the hills east of Cayucos in San Luis Obispo County. Deinandra conjugens is threatened by habitat destruction and degradation. It was federally listed as a threatened species in 1998.

Deinandra clementina, known by the common name island tarplant, is a species of flowering plant in the family Asteraceae, endemic to the Channel Islands of California.

Ambrosia monogyra is a species of flowering plant in the sunflower family commonly known as the singlewhorl burrobrush, leafy burrobush, slender burrobush, and desert fragrance. Ambrosia monogyra is native to North America and is typically found in canyons, desert washes, and ravines throughout arid parts of the southwestern United States and northern Mexico. This species has green, threadlike leaves that emit a distinctive odor when crushed, and flowers from August to November. The fruits have distinctive wings in their middle that aid in dispersion through wind and water.

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Picradeniopsis absinthifolia, the hairyseed bahia or desert bahia, is a North American species of flowering plants in the family Asteraceae. It is native to Mexico (Tamaulipas, Nuevo León, Coahuila, Chihuahua, San Luis Potosí, Querétaro, Hidalgo, Durango, Aguascalientes) and the south-western United States (Arizona New Mexico Texas; populations reported from Utah appear to be introductions). Picradeniopsis absinthifolia is a perennial up to 40 cm (16 inches) tall. It has yellow flowers with both ray florets and disc florets. It grows in sandy soil in desert regions.

Harmonia nutans (syn. Madia nutans) is a species of flowering plant in the family Asteraceae known by the common name nodding madia.

Harmonia hallii (formerly Madia hallii) is a species of flowering plant in the family Asteraceae known by the common names Hall's harmonia and Hall's madia.

Harmonia guggolziorum is a rare California plant species of plant in the tribe Madieae within the family Asteraceae. It is known by the common names Guggolz tarplant and Guggolzes' harmonia. It is endemic to Mendocino County, California, where it is known from two occurrences near Hopland. It is a member of the serpentine soils flora and grows in chaparral habitat. It was only discovered in 2000 and described to science in 2001. The plant was named for Jack and Betty Guggolz, the California plant enthusiasts who collected the type specimen in 2000. This rare plant is an annual herb producing

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Deinandra streetsii is a rare North American species of plant in the tribe Madieae within the family Asteraceae. Deinandra streetsii has is native to the state of Baja California in northwestern Mexico. The species has been found only on San Benito Island, 25 km (16 miles) west of Cedros Island, both parts of the state of Baja California. Deinandra streetsii is closely related to D. corymbosa, with narrow linear leaves. It produces many yellow flower heads, each with both disc florets and ray florets.

Deinandra pentactis, the Salinas River tarweed, is a North American species of plants in the tribe Madieae within the family Asteraceae. It is endemic to California, found in the Coast Ranges of San Benito, Monterey, San Luis Obispo, and northern Santa Barbara Counties. Deinandra pentactis is an annual herb up to 75 cm (30 inches) tall. It produces numerous flower heads in an open array. Each head has 5 yellow ray florets and 6 disc florets with yellow corollas but red or purple anthers.

Deinandra pallida, the Kern tarweed, is a California species of plants in the tribe Madieae within the family Asteraceae. It has been found in the Coast Ranges, southern San Joaquin Valley, and Sierra Nevada foothills in Kern, Los Angeles, Santa Barbara, San Luis Obispo, Tulare, and Kings Counties. Isolated populations have been reported from further north in Tuolumne County and northwestern Fresno County. Deinandra pallida is an annual herb up to 100 cm (40 inches) tall. It produces numerous flower heads in showy arrays, each head with 7-12 yellow ray florets and as many as 21 disc florets

Deinandra mohavensis, commonly known as Mojave tarplant or Mojave tarweed, is a species of flowering plant in the family Asteraceae.