Symphyotrichum greatae

(Parish) G. L. Nesom
Phytologia 77: 283. 1995.
Common names: Greata’s aster
EndemicConservation concern
Basionym: Aster greatae Parish Bull. S. Calif. Acad. Sci. 1: 15, fig. 2. 1902
Treatment appears in FNA Volume 20. Treatment on page 532. Mentioned on page 476.

Perennials 50–150(–200) cm, colonial; long-rhizomatous. Stems 1–5, ascending to erect, sparsely hispid distally. Leaves thin, margins entire to serrate, apices acute, faces scabrous; basal withering by flowering, petiolate, blades elliptic to obovate 30–300 × 15–50 mm, attenuate, margins entire to serrate, apices acute, faces rough-hispidulous; proximalmost cauline sometimes withering by flowering, sessile, blades elliptic to obovate, 100–200 × 20–50 mm, bases rounded to ± clasping, sometimes auriculate, apices acute; distal sessile, blades 20–150 × 10–40 mm, bases cuneate, usually auriculate, apices acute. Heads in paniculiform arrays, branches 10–30 cm. Peduncles sparsely hairy, bracts lanceolate to linear. Involucres campanulate, 5–8 mm. Phyllaries in 4–6 series, narrowly oblong (outer) to linear (inner), unequal to subequal, bases scarious, margins scarious, entire, green zones lanceolate to narrowly elliptic, apices acute, faces glabrate or puberulent. Ray florets 15–40; corollas violet, laminae 8–15 × 1–2 mm. Disc florets 35–60+; corollas yellow, 3.5–4 mm, lobes triangular, 0.5–0.8 mm. Cypselae brown, cylindric to obovoid, not compressed, 2.5–3.5 mm, 3–4-nerved, faces hairy; pappi white, 3.5–4 mm. 2n = 16.


Phenology: Flowering Aug.
Habitat: Damp places in chaparral canyons
Elevation: 500–1500 m

Discussion

Of conservation concern.

Symphyotrichum greatae is known from the south slopes of the San Gabriel Mountains.

Selected References

None.

Lower Taxa

None.

... more about "Symphyotrichum greatae"
Luc Brouillet +, John C. Semple +, Geraldine A. Allen +, Kenton L. Chambers +  and Scott D. Sundberg† +
(Parish) G. L. Nesom +
Aster greatae +
Greata’s aster +
500–1500 m +
Damp places in chaparral canyons +
Flowering Aug. +
Endemic +  and Conservation concern +
Aster sect. Heterastrum +  and Aster subg. Symphyotrichum +
Symphyotrichum greatae +
Symphyotrichum sect. Occidentales +
species +