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1. Centromadia pungens (Hooker & Arnott) Greene, Man. Bot. San Francisco. 196. 1894.
Hartmannia pungens Hooker & Arnott, Bot. Beechey Voy., 357. 1839; Hemizonia pungens (Hooker & Arnott) Torrey & A. Gray
Plants 10–120 cm. Leaves glabrous (but for bristly-ciliate margins and midribs), scabrous, or hirsute (not glandular). Involucres 3–6 mm. Anthers yellow to brownish. Pappi 0.
Subspecies 2 (2 in the flora): w United States (plus New York), nw Mexico.
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Leaves: margins bristly-ciliate, faces glabrous but for bristly midribs; paleae little, if at all, exserted, apices obtuse to acute, sometimes apiculate |
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1a Centromadia pungens subsp. laevis |
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Leaves: margins sometimes ciliate, faces glabrous, scabrous, or hirsute, midribs sometimes bristly; paleae often conspicuously exserted, apices ± atten-uate, spine-tipped |
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1b Centromadia pungens subsp. pungens |
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