Helianthella microcephala

(A. Gray) A. Gray
Proc. Amer. Acad. Arts 19: 10. 1883.
Endemic
Basionym: Encelia microcephala A. Gray Proc. Amer. Acad. Arts 8: 657. 1873
Treatment appears in FNA Volume 21. Treatment on page 115.

Plants 20–60(–80) cm. Cauline leaves: largest proximal to mid stems; blades usually 3-nerved, linear-spatulate to oblong-spatulate, 6–25 cm, faces hispidulous to scabrellous or glabrate. Heads (3–)5–15+ in corymbiform arrays, erect. Involucres turbinate, campanulate, or hemispheric, (8–)12–15(–20+) mm diam. Phyllaries deltate-ovate to oblong (unequal to subequal, margins ciliolate, apices obtuse). Paleae chartaceous, relatively firm. Ray florets (5–)13; laminae 8–14 mm (usually little surpassing discs). Disc corollas purple to brown. Cypselae strongly compressed, ± oblanceolate (scarcely winged, faces densely strigose); pappi of 2 ± subulate scales plus 0–4 shorter scales. 2n = 30.


Phenology: Flowering (Jul–)Aug–Sep.
Habitat: Gulches, ravines, hillsides, semidesert sites, pinyon-juniper associations
Elevation: 1700–2800 m

Distribution

V21-277-distribution-map.gif

Ariz., Colo., N.Mex., Utah.

Discussion

Helianthella microcephala grows in the Colorado Plateau province.

Selected References

None.

Lower Taxa

None.

... more about "Helianthella microcephala"
William A. Weber +
(A. Gray) A. Gray +
Encelia microcephala +
Ariz. +, Colo. +, N.Mex. +  and Utah. +
1700–2800 m +
Gulches, ravines, hillsides, semidesert sites, pinyon-juniper associations +
Flowering (Jul–)Aug–Sep. +
Proc. Amer. Acad. Arts +
Undefined (tribe Undefined) subtribe Enceliinae +, Undefined (tribe Undefined) subtribe Engelmanniinae +, Undefined (tribe Undefined) subtribe Spilanthinae +, Undefined (tribe Undefined) subtribe Verbesininae +  and Undefined (tribe Undefined) subtribe Zinniinae +
Helianthella microcephala +
Helianthella +
species +