Hulsea nana |
Hulsea |
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dwarf alpinegold, dwarf hulsea, little hulsea |
alpinegold, hulsea |
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Habit | Perennials, 5–15(–20) cm. | Annuals or perennials, 5–150 cm. | ||||||||||||||||||||||||
Stems | 1–7, glandular-puberulent and sparsely lanate. |
erect, simple or branched (aerial shoots often from subterranean caudices). |
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Leaves | mostly basal; blades narrowly spatulate, 2–6 cm, margins lobed or toothed (lobes or teeth mostly oblong), faces sparsely lanate to woolly; distal cauline leaves narrowly lanceolate, much reduced. |
basal or basal and cauline, proximally whorled, distally alternate; petiolate (at least basal) or sessile; blades mostly lance-linear, oblanceolate, ovate, or spatulate, margins entire, lobed, or toothed, faces thinly lanate to densely woolly (hairs crisped, tangled, or matted, usually 0.8+ mm) and/or gland-dotted, glandular-puberulent, glandular-villous, or stipitate-glandular. |
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Involucres | obconic, 8–12 mm diam. |
obconic to hemispheric, 8–26 mm diam. |
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Receptacles | flat, knobby or pitted, epaleate. |
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Ray florets | 12–30; corolla tubes glabrous, laminae yellow, 6–10 mm. |
9–60+, pistillate, fertile; corollas yellow, orange, or red. |
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Disc florets/ |
yellow. |
20–200+, bisexual, fertile; corollas yellow to orange (glabrous or sparsely hairy), tubes shorter than or about equaling cylindric throats, lobes 5, deltate to lance-ovate. |
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Phyllaries | 8–12 mm, outer narrowly obovate to oblong-lanceolate, apices acuminate to acute. |
persistent, 14–35(–60+) in 2–4 series (reflexed in fruit, mostly lance-ovate to lanceolate or linear, herbaceous). |
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Heads | 1. |
radiate, borne singly or in corymbiform arrays. |
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Cypselae | 6–8 mm; pappus scales subequal, 1–2 mm. |
clavate to linear, compressed (lenticular in cross section), silky-hairy; pappi of 4 (distinct) quadrate to spatulate, equal, subequal, or unequal, erose to laciniate scales (the alternate alike). |
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x | = 19. |
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2n | = 38. |
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Hulsea nana |
Hulsea |
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Phenology | Flowering summer. | |||||||||||||||||||||||||
Habitat | Subalpine to alpine rocky slopes, taluses, mostly volcanic substrates | |||||||||||||||||||||||||
Elevation | 2400–3000 m (7900–9800 ft) | |||||||||||||||||||||||||
Distribution |
CA; OR; WA
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w United States; nw Mexico |
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Discussion | Densely lanate or woolly plants of Hulsea nana are referable to var. larsenii. Such plants may occur in distinct populations but can be found together with sparsely lanate and strictly glandular plants. The distribution of lanate to woolly plants appears associated with higher levels of insolation. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Species 7 (7 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 21, p. 398. | FNA vol. 21, p. 396. | ||||||||||||||||||||||||
Parent taxa | Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Hulsea | Asteraceae > tribe Heliantheae > subtribe Chaenactidinae | ||||||||||||||||||||||||
Sibling taxa | ||||||||||||||||||||||||||
Subordinate taxa | ||||||||||||||||||||||||||
Synonyms | H. nana var. larsenii, H. vulcanica | |||||||||||||||||||||||||
Name authority | A. Gray: in War Department [U.S.], Pacif. Railr. Rep. 6(3): 76, plate 13. (1858) | Torrey & A. Gray: in War Department [U.S.], in War Department[U.S.], Pacif. Railr. Rep. 6(3): 77, plate 13. 1858 · | ||||||||||||||||||||||||
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