Difference between revisions of "Dicranocarpus"
Mem. Amer. Acad. Arts, n. s. 5: 322. 1854.
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|family=Asteraceae | |family=Asteraceae | ||
|illustrator=Linny Heagy | |illustrator=Linny Heagy | ||
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|distribution=sw United States;n Mexico. | |distribution=sw United States;n Mexico. | ||
|reference=None | |reference=None | ||
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|publication year=1854 | |publication year=1854 | ||
|special status= | |special status= | ||
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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
Annuals, 10–70 cm (± succulent; taprooted). Stems 1, erect, branched dichotomously, divaricate (drying brittle). Leaves mostly cauline; opposite; obscurely petiolate; blades 1(–2)-pedately or -pinnately lobed (lobes filiform), ultimate margins entire, faces glabrous. Heads radiate, borne singly or (2–4) in cymiform arrays. Calyculi of (0–)1–3+ erect, linear to subulate, herbaceous bractlets. Involucres cylindric to obconic, 1.5–3 mm diam. (larger in fruit). Phyllaries persistent, 3–6 in 1(–2) series, lance-ovate to lanceolate, scarious, brown-nerved. Receptacles slightly convex, paleate; paleae linear to subulate, scarious. Ray florets 3–6, pistillate, fertile; corollas yellow. Disc florets 3–4+, functionally staminate; corollas yellow, tubes shorter than throats, lobes 5, triangular. Cypselae obcompressed, oblong to linear, ± ribbed, smooth or tuberculate, glabrous or densely papillate; pappi persistent, of 2 spreading to recurved, smooth or proximally papillate awns. x = 10.
Distribution
sw United States, n Mexico.
Discussion
Species 1.
Selected References
None.