Croptilon hookerianum var. validum

(Rydberg) E. B. Smith

Sida 9: 61. 1981.

Endemic
Basionym: Isopappus validus Rydberg Brittonia 1: 100. 1931
Synonyms: Haplopappus validus (Rydberg) Cory
Treatment appears in FNA Volume 20. Treatment on page 229.

Stems and peduncles densely long-stipitate-glandular (longest hairs 0.4–0.5 mm, including glands), often slightly hispid proximal to heads. Ray laminae 1–2.5 mm wide. 2n = 10 (11, 12).


Phenology: Flowering (Jun–)Jul–Oct.
Habitat: Sand, sandy gravel, dunes, stream terraces, sandstone outcrops, often in areas of oak woodlands, roadsides, roadbanks
Elevation: 20–400 m

Discussion

Selected References

None.

Lower Taxa

None.
Guy L. Nesom +
(Rydberg) E. B. Smith +
Isopappus validus +
Ark. +, Kans. +, Okla. +  and Tex. +
20–400 m +
Sand, sandy gravel, dunes, stream terraces, sandstone outcrops, often in areas of oak woodlands, roadsides, roadbanks +
Flowering (Jun–)Jul–Oct. +
Haplopappus validus +
Croptilon hookerianum var. validum +
Croptilon hookerianum +
variety +