Jepson Flora Project: Jepson Interchange    

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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

  • Up-to-date information about California vascular plants is available from the Jepson eFlora.



David J. Keil, Family Editor and author, except as specified

Annual to tree
Leaves basal or cauline, alternate to whorled, simple to compound
Inflorescence: 1° inflorescence a head, each resembling a flower, 1–many, generally arrayed in cymes, generally subtended by ± calyx-like involucre; flowers 1–many per head
Flowers bisexual, unisexual, or sterile, ± small, of several types; calyx 0 or modified into pappus of bristles, scales, or awns, which is generally persistent in fruit; corolla radial or bilateral (rarely 0), lobes generally (0)4–5; stamens 4–5, anthers generally fused into cylinder around style, often appendaged at tips, bases, or both, filaments generally free, generally attached to corolla near throat; pistil 1, ovary inferior, 1-chambered, 1-seeded, style 1, branches 2, generally hair-tufted at tip, stigmas 2, generally on inside of style branches
Fruit: achene, cylindric to ovoid, generally deciduous with pappus attached
Genera in family: ± 1300 genera, 21,000 species (largest family of dicots): worldwide. Largest family in CA. Also see tribal key to CA genera: Strother 1997 Madroño 44(1):1–28. See glossary p. 25 for illustrations of general family characteristics.


Robert Ornduff

Annual < 30 cm, monoecious, ± glabrous
Stem branched, erect
Leaves cauline, alternate, < 15 cm, entire or lobed
Inflorescence: heads radiate, borne in cymes; phyllaries in 1 series, thin, margins clear; receptacle flat, naked
Ray flowers 6–13, pistillate, (pistillate flowers without corollas sometimes also present); ligules ± yellow (or 0)
Disk flowers 2–100, staminate; corolla yellow; anthers obcordate, pollen yellow or white; style undivided, tip head-like
Fruit 2–4.5 mm, obovoid, generally papillate (if so, gray, sticky when wet); pappus 0
Species in genus: 3 species: CA & Chile
Etymology: (Greek: slimy seed)
Reference: [Ornduff 1964 Brittonia 16:289–295]


B. bakeri Heiser


Leaves 5–15 cm, linear; lower entire; upper 1–3-lobed, lobes 1–3 cm
Inflorescence: involucre 6–8 mm
Ray flowers: ligules 5–7 mm, yellow; stigma dark red; pistillate flowers without corollas 0
Disk flowers: stigma and pollen white
Fruit 3–4 mm, strongly 4–6-angled, papillate
Chromosomes: 2n=18
Ecology: Vernal pools, wet grasslands
Elevation: < 100 m.
Bioregional distribution: North Coast Ranges, ne San Francisco Bay Area (s Sonoma Co.)
Horticultural information: In cultivation.
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for BLENNOSPERMA%20bakeri being generated

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