Stenotus lanuginosus |
Stenotus lanuginosus var. andersonii |
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woolly goldenweed, woolly mock goldenweed, woolly stenotus |
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Habit | Plants loosely cespitose, 4–31 cm; taproots branched, poorly developed. | |||||
Stems | villous to lanate, eglandular or densely stipitate-glandular. |
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Leaves | basal; petioles slender; blades 3-nerved, linear to narrowly oblanceolate or spatulate, 24–70(–100) × 1.5–9 mm, pliable (abaxial faces ± plane), bases attenuate, margins eciliate, eglandular, apices acute to obtuse, faces villous to lanate (trichomes multicellular), or glabrous adaxially, and/or stipitate-glandular. |
blades usually greenish, villous to glabrous and capitate-glandular, or occasionally lanate. |
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Peduncles | 20–155 mm, usually lanate at least immediately proximal to heads, sometimes stipitate-glandular. |
villous to glabrous or occasionally lanate immediately proximal to heads, usually capitate-glandular. |
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Involucres | broadly campanulate to hemispheric, 13–28 × 9–15 mm. |
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Ray florets | 9–17; laminae elliptic, 8–14 × 2.5–7 mm. |
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Disc florets | 30–45(–57); corollas funnelform to narrowly vase-shaped, 5.5–8.5 mm, tubes sparsely hairy, lobes 0.7–1.4 mm, ca. 1/8–1/6 length of corollas; anthers 2.5–3 mm, style-branch appendages subulate to broadly lanceolate, 0.6–1.4 × 0.7 mm, stigmatic lines 0.6–1.8 mm, lengths nearly 2 times appendages. |
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Phyllaries | 18–37(–64) in 2–3 series, 1- or 3-nerved, scarcely unequal, outer lanceolate to narrowly oblong, 7.5–11.5 × 1–3 mm, mid and inner lanceolate, 8–12.5 × 1–4 mm, proximally rather indurate, distally herbaceous and pliable, margins scarious, sometimes broadly so, often fimbriate, wholly green except for margins or with narrow green portions longer than broad, apices acute to acuminate, abaxial faces villous and/or stipitate-glandular. |
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Heads | borne singly. |
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Cypselae | 2.5–5(–6.5) mm, lengths 2/3 disc corollas, faces thinly sericeous; pappus bristles 40–50, 5–9.5 mm, nearly equaling to slightly longer than disc corollas. |
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Mid | phyllaries 1.3–2.2 (–2.4) mm wide, wholly green or margins narrowly scarious to 0.2 mm wide. |
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Stenotus lanuginosus |
Stenotus lanuginosus var. andersonii |
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Phenology | Flowering late spring; fruiting early summer. | |||||
Habitat | Open pine forests, alpine meadows, and sagebrush steppe on granitic, basaltic, or seldomly calcareous soils | |||||
Elevation | 1200–3500 m (3900–11500 ft) | |||||
Distribution |
CA; ID; NV; OR; WA
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ID; Mont 2n = 18 |
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Populations from west-central Idaho assigned to var. andersonii on the basis of phyllary width tend to be intermediate with the typical variety. Larger collections often turn up one or two eglandular individuals. Populations from Montana are frequently lanate and eglandular. They have been included in this variety based on phyllary characters alone. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 20, p. 176. | FNA vol. 20, p. 177. | ||||
Parent taxa | Asteraceae > tribe Astereae > Stenotus | Asteraceae > tribe Astereae > Stenotus > Stenotus lanuginosus | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Haplopappus lanuginosus | S. andersonii, Haplopappus lanuginosus subsp. andersonii, Haplopappus lanuginosus var. andersonii | ||||
Name authority | (A. Gray) Greene: Erythea 2: 72. (1894) | (Rydberg) C. A. Morse: Sida 21: 2093. (2005) | ||||
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