Difference between revisions of "Helianthella microcephala"
Proc. Amer. Acad. Arts 19: 10. 1883.
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Ecliptinae | ||
Latest revision as of 20:11, 5 November 2020
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
Ariz., Colo., N.Mex., Utah.
Discussion
Helianthella microcephala grows in the Colorado Plateau province.
Selected References
None.