Flora of North America species comparison

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Heterosperma pinnatum

wingpetal
Leaves

1–4+ cm, lobes 0.5–1(–3) mm wide.
Ray laminae

1–2+ mm.
Disc corollas

ca. 2.5 mm.
Cypselae

5–18 mm;

pappi 0.5–1(–3) mm.
2n

= 48, 50.

Heterosperma pinnatum
Phenology Flowering Jun–Oct.
Habitat Igneous and calcareous soils
Elevation 900–2500 m (3000–8200 ft)
Distribution
from FNA
AZ; NM; TX; Mexico; Central America
[WildflowerSearch map]
[BONAP county map]
Discussion

Heterosperma pinnatum occurs throughout much of the southwestern United States. No specimens have been seen to substantiate claims of occurrences in Maryland and Massassachusetts, where it may have been ephemeral. Calyculi of H. pinnatum have been interpreted as leaves, the heads being interpreted as terminal and sessile.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 21, p. 219.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Heterosperma
Name authority Cavanilles: Icon. 3: 34 1795/1796 (as pinnata)
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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(If the plant you're looking for doesn't show up in the auto-complete list, that means it either isn't described in Flora of North America yet, or it's listed under a synonym. And please note that Flora of North America is still missing several plant families, including Fabaceae, Apiaceae, Boraginaceae, and Polemoniaceae.)

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