Flora of North America species comparison

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Astranthium robustum

Texas western-daisy
Habit Annuals, taprooted.
Stems

usually 3–8, decumbent-ascending, sometimes 1, erect.
Leaves

basal and proximal cauline 20–45 × 5–11 mm.
Involucres

4–6.8 mm.
Ray florets

18–35;

corolla laminae white or abaxially lavender, often drying pinkish, 8–13 mm.
Disc floret

corollas 3.2–3.8 mm.
Cypselae

1.4–2.1 × 0.7–1.2 mm, faces minutely, glandular-papillate-pebbly, uniformly sparsely to moderately glochidiate-hairy.
2n

= 6.

Astranthium robustum
Phenology Flowering Mar–Jun.
Habitat Disturbed sites in sandy or rocky soil, mesas, canyons, pine flats, roadsides, ditches
Elevation 800–1400 m (2600–4600 ft)
Distribution
from FNA
TX
[BONAP county map]
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.
Parent taxa Asteraceae > tribe Astereae > Astranthium
Sibling taxa
A. ciliatum, A. integrifolium
Synonyms A. integrifolium var. robustum
Name authority (Shinners) De Jong: Publ. Mus. Michigan State Univ., Biol. Ser. 2: 521. (1965)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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