Comments
provided by eFloras
Holocarpha obconica ranges from the eastern San Francisco Bay area and northwest San Joaquin Valley to the Inner South Coast Ranges and is disjunct in western foothills of the southern Sierra Nevada. Often, H. obconica occurs with or near H. heermannii or H. virgata. Crossing studies have shown that different populations of H. obconica retain high interfertility; crosses to other species of Holocarpha have failed or yielded sterile hybrids (J. Clausen 1951).
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Description
provided by eFloras
Plants 10–80(–120) cm; stems ± resinous distally (not notably stipitate-glandular). Heads in corymbiform or paniculiform arrays. Involucres ± obconic to ± globose. Phyllaries each bearing (0–)5–15(–20) gland-tipped processes and usually glabrous or minutely sessile- or stipitate-glandular (rarely ± hispid). Ray florets 4–9. Disc florets 11–21; anthers yellow to brownish. 2n = 12.
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA
Synonym
provided by eFloras
Hemizonia obconica J. C. Clausen & D. D. Keck, Madroño 3: 7. 1935; H. vernalis D. D. Keck; Holocarpha obconica subsp. autumnalis D. D. Keck
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- Missouri Botanical Garden, 4344 Shaw Boulevard, St. Louis, MO, 63110 USA