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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.



Bruce G. Baldwin

Perennial herb 1–8 dm. Stem: erect, branched from base or throughout. Leaf: basal and cauline, proximally opposite or in rosettes, distally alternate, ± sessile, oblong to linear, lance-linear, or oblanceolate, entire or toothed, coarsely to stiffly appressed-hairy or soft hairy, distal stalked-glandular. Inflorescence: heads radiate or discoid, 1 or in ± flat-topped or raceme-like clusters; involucre ± spheric or widely ellipsoid to bell-shaped, 4–6+ mm diam; phyllaries 0–3 or 7–15, lanceolate, elliptic, or oblanceolate, each ± 1/2 or fully enveloping a ray ovary, falling with fruit, minutely ciliate, stalked-glandular, minutely hairy or not; receptacle flat to convex, glabrous or minutely bristly; paleae in 1 series between ray and disk flowers, generally fused, phyllary-like, functionally an involucre in discoid heads, deciduous. Ray flower: 0, 1–3, or 7–15; corolla yellow, ray fan-shaped, deeply 3-lobed. Disk flower: 5–30, bisexual or staminate; corolla yellow, tube < throat, tube/throat often glabrous, lobes deltate, minutely bristly and glandular abaxially; anthers yellow, tips ovate; style glabrous proximal to branches, branches awl-shaped, densely hairy. Fruit: ± club-shaped, black or ± gray, ray fruit ± arched, compressed side-to-side or ± front-to-back, glabrous or hairy, beaked, beak 0.2–0.3 mm, offset adaxially, ray pappus 0 or crown-like; disk fruit if present ± straight, ± cylindric, hairy, disk pappus of 5–8 or 11–21 linear to lanceolate, ± square, or awl-shaped, fringed or ciliate to plumose, sometimes ± bristle-like scales.
2 species. (Greek: dissimilar fruits, from contrasting (fertile) ray and (sterile) disk ovaries of Anisocarpus madioides) [Baldwin & Strother 2006 FNANM 21:299–301]
Unabridged disk flower: anther bases sagittate.
Unabridged references: [Baldwin 1999 Novon 9:462–471; Carlquist et al. 2003 Tarweeds and silverswords: evolution of the Madiinae (Asteraceae)]

Key to Anisocarpus

1. Leaves dark green, 4–13 cm, entire or shallowly toothed; ray flowers 7–15; involucre 4–6 mm, ± spheric; disk flowers staminate; ray fruit compressed side-to-side; disk pappus 0.2–1.5 mm, of 5–8, linear to lanceolate or ± square, fringed scales ..... A. madioides

1' Leaves ± blue-green, 1–3 cm, entire; ray flowers 0 or 1–3; involucre 6–12 mm, widely ellipsoid to bell-shaped; disk flowers bisexual, forming fruits; ray fruit ± compressed front-to-back; disk pappus 4–7 mm, of 11–21, awl-shaped, or ± bristle-like, ciliate-plumose scales ..... A. scabridus


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, [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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