Eucephalus tomentellus |
Eucephalus breweri |
|
---|---|---|
brickellbush aster, hairy rayless aster, rayless aster |
Brewer's aster |
|
Habit | Perennials 40–90 cm (caudices woody). | Perennials, 10–100 cm (caudices woody). |
Stems | erect, woolly or cottony. |
ascending to erect, glabrate or woolly, eglandular or glandular. |
Leaves | mid and distal blades lanceolate to elliptic, 2.5–6 cm × 7–20 mm, abaxial faces glabrous or glabrate, adaxial ± densely woolly to cottony. |
mid and distal blades linear-lanceolate to ovate, 2–5 cm × 6–15 mm, faces glabrate and eglandular to moderately glandular and/or woolly. |
Peduncles | pubescent. |
sparsely to densely woolly and glandular. |
Involucres | turbinate, 7–10 mm. |
turbinate-cylindric, 6–10 mm. |
Phyllaries | in 4–6 series (often reddish at margins and apices), linear-oblong to ovate (strongly unequal), apices acute, abaxial faces tomentose to stipitate-glandular. |
in 3–4 series (sometimes reddish along margins), lance-linear to lance-oblong, ± subequal, margins eciliate, apices acuminate, abaxial faces glabrate and eglandular to moderately woolly or glandular. |
Heads | 3–40 in racemiform to paniculiform arrays. |
1–15(–35) in racemiform to corymbiform or paniculiform arrays. |
Cypselae | glabrous or pilose; pappus bristles in 2 series, ± barbellate. |
strigose; pappus bristles in 1 series (6–10 mm), barbellate. |
Rays | (0–)1–3(–6), violet-purple. |
0. |
2n | = 18. |
|
Eucephalus tomentellus |
Eucephalus breweri |
|
Phenology | Flowering Jul–Aug. | Flowering Jul–Sep. |
Habitat | Open oak or coniferous woods, forest openings and rocky cliffs | Open coniferous forest and subalpine meadows |
Elevation | 1300–2400 m (4300–7900 ft) | 1500–3000(–3500) m (4900–9800(–11500) ft) |
Distribution |
CA; OR
|
CA; NV
|
Discussion | Eucephalus tomentellus grows in the Siskiyou Mountains of southwestern Oregon and northern California. It may intergrade with E. breweri and E. glabratus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Eucephalus breweri is found in the Sierra Nevada. Specimens at the northern edge of the range may intergrade with E. glabratus and E. tomentellus. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 20, p. 42. | FNA vol. 20, p. 40. |
Parent taxa | Asteraceae > tribe Astereae > Eucephalus | Asteraceae > tribe Astereae > Eucephalus |
Sibling taxa | ||
Synonyms | Sericocarpus tomentellus, Aster brickellioides, Aster tomentellus, E. bicolor, E. brickellioides | Chrysopsis breweri, Aster breweri, Heterotheca breweri |
Name authority | (Greene) Greene: Pittonia 3: 55. (1896) | (A. Gray) G. L. Nesom: Phytologia 77: 254. (1995) |
Web links |