Lasthenia glabrata |
Lasthenia minor |
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yellow ray goldfields |
coastal goldfields |
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Habit | Annuals, to 60 cm. | Annuals, to 35 cm (herbage not sweetly scented). | ||||
Stems | erect, branched distally, glabrous or slightly hairy. |
erect, branched distally, ± woolly, especially distally. |
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Leaves | linear or subulate, 40–150 × 2–3+ mm, margins entire, faces glabrous. |
broadly to narrowly linear, 20–120 × 1–10 mm, margins entire or irregularly toothed or lobed (lobes to 1.5 mm), faces glabrous or villous. |
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Involucres | hemispheric, 5–10 mm. |
hemispheric, 4–6 mm. |
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Receptacles | ± conic, papillate, glabrous or sparsely hairy. |
conic, muricate, glabrous. |
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Ray florets | 7–15; (corollas yellow) laminae oblong, 4–14 mm. |
(8–)13; (corollas light to golden yellow) laminae oblong, 4–8 mm. |
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Phyllaries | 10–14, ± lanceolate (distinct tips ± deltate), glabrous but for apices. |
7–14, oblong to ovate, hairy (especially at margins). |
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Cypselae | gray, clavate or obovoid, 2–3.5 mm, margins not ciliate, faces glabrous, or hairy and papillate (papillae rusty or yellowish, wartlike); pappi 0. |
black, narrowly clavate, 2–2.5 mm, glabrous or hairy; pappi 0, or of 2–3(–4) brown or white, lanceolate or subulate, aristate scales plus 4–5+ shorter, ± truncate, fimbriate scales. |
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Anther | appendages deltate or broadly ovate. |
appendages ovate or elliptic, acute (style apices ± deltate with apical tufts of hairs and subapical fringes of shorter hairs). |
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2n | = 8. |
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Lasthenia glabrata |
Lasthenia minor |
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Phenology | Flowering Mar–Jun. | |||||
Habitat | Grasslands, coastal and inland | |||||
Elevation | 0–700 m (0–2300 ft) | |||||
Distribution |
CA
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CA
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Discussion | Subspecies 2 (2 in the flora). Historically, aboriginal Californians used fruits and leaves of Lasthenia glabrata for food. The subspecies are allopatric and almost identical except for their cypselae. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Lasthenia minor is variable; coastal plants tend to have lower stature and broader leaves and tend to flower later in the year. Inland populations were once common in the San Joaquin Valley and are now harder to find as grasslands become cultivated, grazed, or built upon. Epappose plants are common and sometimes comprise entire populations. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 21, p. 343. | FNA vol. 21, p. 347. | ||||
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Baeriinae > Lasthenia > sect. Hologymne | Asteraceae > tribe Heliantheae > subtribe Baeriinae > Lasthenia > sect. Ptilomeris | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Monolopia minor, Baeria minor | |||||
Name authority | Lindley: Edwards’s Bot. Reg. 21: plate 1780. (1835) | (de Candolle) Ornduff: Univ. Calif. Publ. Bot. 40: 80. (1966) | ||||
Web links |
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