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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.

 

STENOTUS

Lowell E. Urbatsch


Perennial herb to subshrub, taprooted, ± mat or mound-forming, from branched caudex; glabrous or scabrous to tomentose, sometimes ± stalked-glandular. Stem: flowering stems generally erect to spreading, generally unbranched, proximal 1/4–2/3 bearing often many, crowded leaves. Leaf: alternate, basal persisting 2–3 years, 2–10 cm, linear to oblanceolate, tapered to ± indefinite petiole, entire, 1–3-veined. Inflorescence: heads radiate, generally 1 (2–4 in ± flat-topped cluster); peduncle < 15 cm; involucre hemispheric; phyllaries weakly graduated in 2–3 series, linear to ± ovate, ± leaf-like, bases sometimes papery, tips acute to acuminate; receptacle convex, pitted, epaleate. Ray flower: 6–20; corolla yellow. Disk flower: 25–50; corolla 6–7.5 mm, funnel-shaped, yellow; anther tip narrowly triangular; style tips long tapered, appendage length 2–4 × width. Fruit: 2.4–6 mm, glabrous to densely silky; pappus of soft bristles <= 10 mm.
± 3 species: western North America. (Greek: narrowness, for leaf width) [Morse 2006 FNANM 20:174–177] Other sp. of Stenotus in TJM (1993) [Stenotus stenophyllus (A. Gray) Greene] now treated in Nestotus.

Key to Stenotus

1. Stem and leaves glabrous or scabrous; glandless or stalked-glandular, sometimes sticky; taproot generally well developed, stout; leaves rigid ..... S. acaulis

1' Stem and leaves ± tomentose with crinkled, shaggy hairs; glandless to sparsely stalked-glandular proximal to head; taproot weakly developed, branched; leaves ± flexible ..... S. lanuginosus var. lanuginosus

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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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