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woolly goldenweed, woolly mock goldenweed, woolly stenotus

Photo is of parent taxon
Habit Plants loosely cespitose, 4–31 cm; taproots branched, poorly developed.
Stems

villous to lanate, eglandular or densely stipitate-glandular.

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.

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.

Involucres

broadly campanulate to hemispheric, 13–28 × 9–15 mm.

Ray florets

9–17;

laminae elliptic, 8–14 × 2.5–7 mm.

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.

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.

Heads

borne singly.

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.

Mid

phyllaries 1.3–2.2 (–2.4) mm wide, wholly green or margins narrowly scarious to 0.2 mm wide.

Stenotus lanuginosus

Stenotus lanuginosus var. andersonii

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
from FNA
CA; ID; NV; OR; WA
[WildflowerSearch map]
[BONAP county map]
from FNA
ID; Mont 2n = 18
[BONAP county map]
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.)

Key
1. Mid phyllaries 2–4 mm wide, scarious margins 0.3–0.7 mm; peduncles lanate proximal to heads, eglandular to sparsely stipitate-glandular
var. lanuginosus
1. Mid phyllaries 1–2.2(–2.4) mm wide, scarious margins 0–0.2 mm; peduncles villous or glabrous proximal to heads (rarely lanate), usually sparsely to densely stipitate-glandular (rarely eglandular)
var. andersonii
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
S. acaulis, S. armerioides
S. lanuginosus var. lanuginosus
Subordinate taxa
S. lanuginosus var. andersonii, S. lanuginosus var. lanuginosus
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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