Astranthium integrifolium |
Astranthium robustum |
|
---|---|---|
eastern western-daisy, entireleaf western daisy |
Texas western-daisy |
|
Habit | Annuals (biennials?), usually fibrous-rooted. | Annuals, taprooted. |
Stems | usually 1, erect to decumbent-ascending. |
usually 3–8, decumbent-ascending, sometimes 1, erect. |
Leaves | basal and proximal cauline 30–60 × 7–22 mm. |
basal and proximal cauline 20–45 × 5–11 mm. |
Involucres | 3.5–6 mm. |
4–6.8 mm. |
Ray florets | (8–)16–26; corolla laminae white, occasionally drying with bluish midstripe abaxially, (6–)8–17 mm. |
18–35; corolla laminae white or abaxially lavender, often drying pinkish, 8–13 mm. |
Disc floret | corollas 2.5–3.7 mm. |
corollas 3.2–3.8 mm. |
Cypselae | (1.4–)1.6–2(–2.2) × 0.9–1.1 mm, faces minutely papillate-pebbly, linear striations barely discernible, usually glabrous, sometimes sparsely glochidiate-hairy distally. |
1.4–2.1 × 0.7–1.2 mm, faces minutely, glandular-papillate-pebbly, uniformly sparsely to moderately glochidiate-hairy. |
2n | = 8. |
= 6. |
Astranthium integrifolium |
Astranthium robustum |
|
Phenology | Flowering Apr–Jun(–Jul). | Flowering Mar–Jun. |
Habitat | Rocky (limestone) banks and ridges, alluvial fields, stream banks and terraces, open juniper woods, glades, roadsides | Disturbed sites in sandy or rocky soil, mesas, canyons, pine flats, roadsides, ditches |
Elevation | 50–300 m (200–1000 ft) | 800–1400 m (2600–4600 ft) |
Distribution |
AL; GA; KY; MS; TN
|
TX |
Discussion | Astranthium robustum is known only from the trans-Pecos region. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 20, p. 204. | FNA vol. 20, p. 204. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | Bellis integrifolia | A. integrifolium var. robustum |
Name authority | (Michaux) Nuttall: Trans. Amer. Philos. Soc., n. s. 7: 312. (1840) | (Shinners) De Jong: Publ. Mus. Michigan State Univ., Biol. Ser. 2: 521. (1965) |
Web links |