Ericameria linearis |
Ericameria suffruticosa |
|
---|---|---|
linear-leaf discoid gumweed, Wyoming goldenbush |
bighead goldenbush, goldenweed, heath goldenrod, shrubby goldenweed, single-head goldenweed, singlehead goldenbush |
|
Habit | Plants 10–40 cm. | Plants 10–40 cm. |
Stems | erect to spreading, green when young, becoming brown, branched proximally, densely floccose-tomentose, eglandular. |
spreading to erect (bushes mostly broader than high), highly branched, green when young, becoming reddish brown, long-stipitate-glandular. |
Leaves | ascending; blades linear (adaxially sulcate), 10–30 × 1–2 mm, midnerves evident, apices acute, faces mostly densely tomentose, stipitate-glandular; sometimes with axillary leaf fascicles. |
ascending; blades oblanceolate, 5–40 × 2–7 mm, midnerves evident, (margins crispate) apices acute, faces long-stipitate-glandular; fascicles absent or of 1–3 leaves. |
Peduncles | 2–20 mm (usually leafy). |
2–20(–40) mm (bracts 1–10+, leaflike). |
Involucres | obconic, 9–11 × 6–9 mm. |
campanulate, 9–15 × 10–15 mm. |
Ray florets | 0. |
(0–)1–8; laminae elliptic, 8–14 × 1.5–4 mm. |
Disc florets | 10–22; corollas 9–11 mm. |
15–40; corollas 8.5–10.5 mm. |
Phyllaries | 20–30 in 2–3 series, green to tan, oblong to lanceolate, 5–10 × 0.8–1.5 mm, subequal, mostly chartaceous, outer herbaceous or herbaceous-tipped, midnerves usually evident, apices acute to acuminate, abaxial faces hairy, stipitate-glandular. |
17–31 in 2–3 series, green to tan, lanceolate to obovate, 8–18 × 1–4 mm, subequal, outer herbaceous or herbaceous-tipped, inner chartaceous to herbaceous-tipped, midnerves (+ 2 smaller, collateral nerves) often evident, (margins herbaceous or narrowly membranous, mostly stipitate glandular to fimbriate) apices acute to acuminate, abaxial faces stipitate-glandular. |
Heads | borne singly or in cymiform arrays. |
borne singly or (2–3) in (leafy) racemiform arrays (1–4 cm wide). |
Cypselae | brownish, narrowly oblong, 5–6 mm, densely hairy; pappi tan, 8–10 mm. |
narrowly turbinate to ellipsoid, 5.5–8 mm, villous; pappi tan, 7.5–9 mm. |
2n | = 18. |
|
Ericameria linearis |
Ericameria suffruticosa |
|
Phenology | Flowering late summer–fall. | Flowering mid summer–fall. |
Habitat | Dry, stony slopes | Rocky slopes and ridges in conifer forests and alpine zones |
Elevation | ca. 2300 m (ca. 7500 ft) | 2100–3500 m (6900–11500 ft) |
Distribution |
MT; WY |
CA; ID; MT; NV; OR; WY
|
Source | FNA vol. 20, p. 61. | FNA vol. 20, p. 76. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Macronema lineare, E. discoidea var. linearis, Haplopappus macronema subsp. linearis, Haplopappus macronema var. linearis | Macronema suffruticosa, Haplopappus suffruticosus |
Name authority | (Rydberg) R. P. Roberts & Urbatsch: Sida 21: 1560. (2005) | (Nuttall) G. L. Nesom: Phytologia 68: 153. (1990) |
Web links |