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dwarf alpinegold, dwarf hulsea, little hulsea

alpinegold, hulsea

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).

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.

Involucres

obconic, 8–12 mm diam.

obconic to hemispheric, 8–26 mm diam.

Receptacles

flat, knobby or pitted, epaleate.

Ray florets

12–30;

corolla tubes glabrous, laminae yellow, 6–10 mm.

9–60+, pistillate, fertile;

corollas yellow, orange, or red.

Disc florets/Disc corollas

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.

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).

Heads

1.

radiate, borne singly or in corymbiform arrays.

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).

x

= 19.

2n

= 38.

Hulsea nana

Hulsea

Phenology Flowering summer.
Habitat Subalpine to alpine rocky slopes, taluses, mostly volcanic substrates
Elevation 2400–3000 m (7900–9800 ft)
Distribution
from FNA
CA; OR; WA
[WildflowerSearch map]
[BONAP county map]
from USDA
w United States; nw Mexico
[BONAP county map]
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.)

Key
1. Basal and proximal cauline leaves gray to grayish green, lanate to woolly (hairs mostly eglandular)
→ 2
1. Basal and proximal cauline leaves ± green, mostly glandular-puberulent or glandular villous (sometimes sparsely lanate as well, sometimes woolly in H. nana)
→ 3
2. Leaves basal and cauline, blades broadly oblanceolate to spatulate, 6–10 cm; heads 2–5; cypselae 4–6 mm
H. californica
2. Leaves mostly basal, blades spatulate, 1–9 cm; heads 1–2; cypselae 5–10 mm
H. vestita
3. Leaves mostly basal (cauline none or relatively few); heads 1–2 (per basal leaf rosette)
→ 4
3. Leaves mostly cauline (basal usually present as well); heads 3–5
→ 5
4. Plants (10–)20–40 cm; leaf margins sinuate, lobed, or toothed (lobes or teeth mostly triangular); phyllary apices acute to attenuate; ray florets 28–59
H. algida
4. Plants 5–15(–20) cm; leaf margins lobed (lobes mostly oblong); phyllary apices acuminate to acute; ray florets 12–30
H. nana
5. Ray laminae red to reddish purple (narrowly oblong to linear, ciliate)
H. heterochroma
5. Ray laminae yellow (narrowly elliptic to narrowly lance-oblong)
→ 6
6. Ray florets 10–23, corolla tubes hairy
H. brevifolia
6. Ray florets 20–35, corolla tubes glabrous
H. mexicana
Source FNA vol. 21, p. 398. FNA vol. 21, p. 396. Author: Dieter H. Wilken.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Chaenactidinae > Hulsea Asteraceae > tribe Heliantheae > subtribe Chaenactidinae
Sibling taxa
H. algida, H. brevifolia, H. californica, H. heterochroma, H. mexicana, H. vestita
Subordinate taxa
H. algida, H. brevifolia, H. californica, H. heterochroma, H. mexicana, H. nana, H. vestita
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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