Difference between revisions of "Heterosperma pinnatum"
Icon. 3: 34 1795/1796 (as pinnata).
Treatment appears in FNA Volume 21. Treatment on page 219.
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name=Heterosperma pinnatum | name=Heterosperma pinnatum | ||
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|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | ||
Latest revision as of 20:12, 5 November 2020
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.
Phenology: Flowering Jun–Oct.
Habitat: Igneous and calcareous soils
Elevation: 900–2500 m
Distribution
Ariz., N.Mex., Tex., Mexico, Central America.
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.
Selected References
None.
Lower Taxa
None.