Crocidium multicaule |
Crocidium |
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common spring-gold, gold-star, spring-gold |
crocidium, gold star, spring-gold |
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Habit | Annuals, (2–)4–12(–30) cm (usually glabrous but for axillary tomentum). | |
Stems | usually 1, erect, simple or branched near bases. |
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Leaves | blades: basal 10–25+ × 3–8(–12+) mm, entire or toothed; cauline 3–12 × 1–4 mm, mostly entire. |
(± fleshy) basal and cauline; alternate; petiolate (basal) or sessile; blades palmately nerved, spatulate or oblanceolate (basal) to lanceolate or linear, margins toothed or entire, faces glabrous or glabrate. |
Involucres | 3–5(–7+) mm. |
± hemispheric, 3–6+ mm diam. |
Receptacles | dome-shaped to conic (heights equaling or greater than diameters), smooth, epaleate. |
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Ray florets | corolla tubes 1–1.5 mm, laminae oblong to elliptic, 3–6(–10) mm. |
5–13+, pistillate and fertile or neuter; corollas yellow (laminae conspicuous). |
Disc florets | corolla tubes 0.7–1.5 mm, throats 0.5–1.1 mm, lobes 0.5–0.9 mm. |
12–60(–120+), bisexual, fertile; corollas yellow, tubes ± cylindric, longer than or equaling campanulate to cylindric throats, lobes 5, erect to spreading, deltate to lanceolate; style branches stigmatic in 2 lines, apices truncate-penicillate. |
Phyllaries | (veiny, often purple-tipped, each subtending a ray floret) persistent, 5–13+ in 1(–2) series, erect (reflexed in fruit), basally connate, elliptic to ovate, subequal, margins herbaceous to membranous. |
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Calyculi | 0. |
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Heads | radiate, borne singly. |
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Cypselae | 1.5–2.5 mm; pappi 2–4 mm. |
(stramineous to reddish brown) ± ellipsoid to fusiform, 5(–6)-nerved, ± papillate-hairy between nerves (papillae mucilaginous when wetted); pappi fragile or readily falling, usually of 20–40, white, barbellulate bristles (in 1 series), sometimes 0 on ray cypselae. |
x | = 9. |
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2n | = 18. |
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Crocidium multicaule |
Crocidium |
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Phenology | Flowering Feb–Jun. | |
Habitat | Grassy, mossy, or bare, often disturbed, sometimes wet sites in chaparral, oak forests, conifer forests, and sagebrush scrub | |
Elevation | 90–1500 m (300–4900 ft) | |
Distribution |
CA; ID; OR; WA; BC
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w North America |
Discussion | Species 1. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 20, p. 641. | FNA vol. 20, p. 641. |
Parent taxa | Asteraceae > tribe Senecioneae > Crocidium | Asteraceae > tribe Senecioneae |
Subordinate taxa | ||
Name authority | Hooker: Fl. Bor.-Amer. 1: 335, plate 118. (1834) | Hooker: Fl. Bor.-Amer. 1: 335, plate 118. (1834) |
Web links |
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