Amblyopappus pusillus |
Amblyopappus |
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dwarf coastweed, pineapple weed |
amblyopappus |
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Habit | Annuals, to 40 cm (sweet scented). | |
Stems | erect, branched. |
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Leaves | 1–3+ cm, often ± fleshy. |
cauline; opposite (proximal) or alternate (mostly); sessile; blades mostly linear, sometimes pinnately lobed, ultimate margins entire, faces glabrous (often granular-glandular). |
Involucres | ovoid to campanulate, 3–4+ mm diam. |
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Receptacles | conic, pitted or smooth, glabrous, epaleate. |
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Ray florets | 0 (or inconspicuous; peripheral 3–8 florets pistillate, fertile; corollas yellow, tubular or nearly so). |
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Disc florets/ |
0.6–1 mm. |
2–25+, bisexual, fertile; corollas yellow, tubes about equaling campanulate throats, lobes 5, ± deltate. |
Phyllaries | persistent, 3–6+ in 1–2 series (± erect in fruit, distinct, obovate, herbaceous to membranous or scarious, flat or weakly cupped at bases, glabrous or granular-glandular). |
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Heads | discoid or disciform, in corymbiform or paniculiform arrays. |
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Cypselae | black, 1.5–2 mm; pappi of white or purplish, apically ± muticous scales 0.5–0.8 mm. |
mostly obpyramidal, (3–)4-angled, hairy; pappi persistent, of 7–10+ oblong to spatulate scales. |
Ray | or pistillate corollas 0.6–1 mm (obscurely zygomorphic). |
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x | = 8. |
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2n | = 16. |
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Amblyopappus pusillus |
Amblyopappus |
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Phenology | Flowering spring. | |
Habitat | Coastal bluffs, dunes, beaches | |
Elevation | 0–40+ m (0–100+ ft) | |
Distribution |
CA; South America; Mexico (Baja California)
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CA; nw Mexico; South America |
Discussion | Species 1. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 21, p. 348. | FNA vol. 21, p. 348. |
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Baeriinae > Amblyopappus | Asteraceae > tribe Heliantheae > subtribe Baeriinae |
Subordinate taxa | ||
Name authority | Hooker & Arnott: J. Bot. (Hooker) 3: 321. (1841) | Hooker & Arnott: J. Bot. (Hooker) 3: 321. (1841) |
Web links |