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Key to families | Table of families and genera
Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.
Annual, perennial herb, ± tomentose throughout. Stem: 1–many from base. Leaf: simple, basal and alternate, entire to deeply lobed, ± reduced upward, petioled or distal sessile, tomentose and glandular. Inflorescence: heads radiate, 1 or in loose cyme-like clusters; peduncles short to very long; involucre cylindric to bell-shaped or hemispheric; phyllaries in 1–2 ± equal series, lance-linear; receptacle flat to slightly rounded, pitted, epaleate or with scattered, narrow paleae. Ray flower: 4–many; ray ovate, ± 3-lobed, sessile on ovary, yellow, drying cream, papery, reflexed and persistent on fruit when dry. Disk flower: 8–many; corolla yellow, gland-dotted, lobes triangular, long-hairy; anther tips triangular; style tips truncate or short-triangular. Fruit: linear to club-shaped, cylindric or ± angled, short-rough-hairy and gland-dotted to glabrous; pappus 0.
3 species: southwestern United States, Mexico. (J.W. Bailey, American microscopist, 1811–1857) [Turner 2006 FNANM 21:444–447]
Unabridged references: [Turner 1993 Sida 15:491–508]
1. Ray flowers 4–8, pale yellow; involucre generally 4–6 mm diam; heads 2–3 ..... B. pauciradiata
1' Ray flowers 15–many, bright yellow; involucre 7–25 mm diam; heads solitary
2. Rays 10–20 mm, widely linear or oblong, prominently 3-lobed; fruit cylindric or barely angled; ribs ± equal; peduncles generally 10–30 cm, ± naked, scape-like ..... B. multiradiata
2' Rays 6–10 mm, widely elliptic to obovate, shallowly 3-lobed to truncate; fruit ribbed and angled; ribs of angles most prominent; peduncles generally 2–10 cm, generally leafy-bracted ..... B. pleniradiata
Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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