Prenanthella exigua

(A. Gray) Rydberg
Bull. Torrey Bot. Club 33: 161. 1906.
Common names: Brightwhite desert prenanthella
Illustrated
Basionym: Prenanthes exigua A. Gray Smithsonian Contr. Knowl. 5(6): 105. 1853
Synonyms: Lygodesmia exigua (A. Gray) A. Gray
Treatment appears in FNA Volume 19. Treatment on page 360.

Leaves 1–3 cm, reduced distally to bracts 0.5–5 mm. Heads 10–150+. Calyculus bractlets 0.5–1+ mm. Principal phyllaries 3–5 mm after flowering. Corollas 1.5–2 mm. Cypselae 2.5–3.5 mm; pappi: longest bristles 2–3 mm. 2n = 14.


Phenology: Flowering Mar–Jun.
Habitat: Sandy, gravelly, or clay soils, desert washes and open slopes to sagebrush-juniper steppes
Elevation: 20–1900 m

Distribution

V19-571-distribution-map.gif

Ariz., Calif., Colo., Nev., Oreg., Tex., Utah, Mexico (Baja California, Sonora).

Discussion

Selected References

None.

Lower Taxa

None.

... more about "Prenanthella exigua"
Kenton L. Chambers +
(A. Gray) Rydberg +
Prenanthes exigua +
Brightwhite +  and desert prenanthella +
Ariz. +, Calif. +, Colo. +, Nev. +, Oreg. +, Tex. +, Utah +, Mexico (Baja California +  and Sonora). +
20–1900 m +
Sandy, gravelly, or clay soils, desert washes and open slopes to sagebrush-juniper steppes +
Flowering Mar–Jun. +
Bull. Torrey Bot. Club +
Illustrated +
Lygodesmia exigua +
Prenanthella exigua +
Prenanthella +
species +