Ericameria cooperi |
Ericameria ophitidis |
|
---|---|---|
Cooper's goldenbush |
serpentine goldenbush, serpentine macronema |
|
Habit | Plants 10–30 cm. | |
Stems | erect to spreading, green when young, becoming reddish brown, intricately branched, glabrous or sparsely hairy, sometimes resinous. |
|
Leaves | ascending to spreading; blades linear (slightly concave), usually recurved, 5–15 × 0.5–1.5 mm, midnerves evident abaxially, apices acute, usually mucronate, faces glabrous or sparsely hairy, gland-dotted (not in deep pits), ± resinous; axillary fascicles of 4–7 leaves usually present. |
|
Peduncles | 1–10 mm (glabrous or with conic hairs, resinous). |
|
Involucres | subcylindric, 10–15 × 3–7 mm. |
|
Ray florets | 0. |
|
Disc florets | 5–6; corollas 9–10.5 mm. |
|
Phyllaries | 18–30 in 5–7 series, tan, ovate to elliptic, 2–12 × 1–2.5 mm, unequal, mostly chartaceous, occasionally herbaceous-tipped (mid bodies apically obtuse to truncate), appendages usually herbaceous, often spreading to recurved, midnerves faint, (margins membranous, fimbriate distally, otherwise sometimes ciliolate) apices acute to cuspidate, abaxial faces mostly resinous. |
|
Heads | borne singly or (2–7) in cymiform arrays (clusters 3–20 mm). |
|
Cypselae | tan to brown, turbinate to narrowly oblanceolate, 5–7 mm (ribs 5–7), moderately hairy distally; pappi off-white to brown, 9–10.5 mm. |
|
Ericameria cooperi |
Ericameria ophitidis |
|
Phenology | Flowering summer–fall. | |
Habitat | Open coniferous forest, usually on serpentine soil, Arid Transition Zone | |
Elevation | 1500–1700 m (4900–5600 ft) | |
Distribution |
CA; NV; nw Mexico
|
CA |
Discussion | Varieties 2 (1 in the flora). Ericameria cooperi var. bajacalifornica (Urbatsch & Wussow) Urbatsch is known only from Mexico (Baja California). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Ericameria ophitidisis is known from northern California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 56. | FNA vol. 20, p. 70. |
Parent taxa | Asteraceae > tribe Astereae > Ericameria | Asteraceae > tribe Astereae > Ericameria |
Sibling taxa | ||
Subordinate taxa | ||
Synonyms | Bigelowia cooperi, Haplopappus cooperi | Haplopappus bloomeri var. ophitidis, Haplopappus ophitidis |
Name authority | (A. Gray) H. M. Hall: Univ. Calif. Publ. Bot. 3: 56. (1907) | (J. T. Howell) G. L. Nesom: Phytologia 68: 153. (1990) |
Web links |