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Pterocaulon Elliott. Wingstem, Blackroot.

Key to Pterocaulon

A genus of about 18 species, herbs, of tropical, subtropical, and warm temperate America, and of Oceania and se. Asia.

ID notes: Pterocaulon is an unmistakable genus in our flora, the stems and leaf undersurfaces creamy-white floccose-tomentose, the leaf bases decurrent down the stem, the heads in oblong, terminal spikes, the tip nodding before anthesis.

Ref: Arriagada (1998); Cabrera & Ragonese (1978); Cronquist (1980); Diamond (2020); Nesom (2006p) In Flora of North America Editorial Committee (2006a). Show full citations.

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Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image of plant© Bruce Sorrie | Pterocaulon pycnostachyum | Original Image ⭷
image of plant© Scott Ward | Pterocaulon pycnostachyum | Original Image ⭷
image of plant© Scott Ward | Pterocaulon pycnostachyum | Original Image ⭷

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