Ericameria resinosa |
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Columbia goldenweed, Columbian goldenbush, Columbian heath goldenweed |
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Habit | Plants 30–50 cm. |
Stems | erect to spreading, green when young, fastigiately branched, glabrous or sparsely hairy, resinous. |
Leaves | mostly ascending to spreading, often recurved distally; blades filiform to narrowly oblanceolate (adaxially sulcate), 10–25 × 0.5–1.5 mm, midnerves obscure, apices apiculate, faces glabrous, resinous (axillary fascicles usually present). |
Peduncles | 1–10 mm (bracts 0–15+). |
Involucres | obconic, 5.5–8 × 3–5 mm. |
Ray florets | 3–7; laminae (white) 5.5–7 × 1.5–2 mm. |
Disc florets | 10–15; corollas (white) 6–8 mm. |
Phyllaries | 22–34 in 4–5 series, green to tan, lanceolate to oblong, 1–6 × 0.5–1.5 mm, strongly unequal (sometimes outer subequal), mostly chartaceous, outer herbaceous or apically so (mid bodies often apically obtuse to notched, with subulate appendages), midnerves evident, (margins narrowly membranous, entire or serrulate, often ciliolate) apices acute to attenuate (outer often squarrose), abaxial faces glabrous, resinous. |
Heads | in loose, cymiform arrays (1–4 cm wide). |
Cypselae | tan to brown, narrowly turbinate, 4.5–5 mm, moderately to densely sericeous; pappi off-white to brown, 5.8–7.2 mm. |
2n | = 18. |
Ericameria resinosa |
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Phenology | Flowering late summer–fall. |
Habitat | Rocky plains, steep hillsides, and cliff faces, often on basalt |
Elevation | 100–1000 m (300–3300 ft) |
Distribution |
ID; OR; WA
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Source | FNA vol. 20, p. 76. |
Parent taxa | |
Sibling taxa | |
Synonyms | Haplopappus resinosus |
Name authority | Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 319. (1840) |
Web links |