Desmodium rosei |
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rose tickclover, Rose's ticktrefoil |
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Habit | Herbs, annual; with slender taproot. |
Stems | erect, usually striate, 10–50 cm, obscurely uncinate-puberulent or glabrescent. |
Leaves | trifoliolate; stipules persistent, patent, subulate or narrowly deltate (from broad base), 2–3 mm; petiole 10–35 mm; leaflet blades linear to narrowly oblong, apex obtuse, surfaces sparsely uncinate-puberulent; terminal blade 20–70 × 2–5 mm, length 7+ times width. |
Inflorescences | usually unbranched; rachis sparsely patent uncinate-puberulent; primary bracts usually persistent, subulate, patent, 1.5–4 mm. |
Pedicels | 15–20(–25) mm. |
Flowers | calyx 1 mm, sparsely puberulent, tube 0.8–1 mm; abaxial lobes 1 mm, lateral lobes 1 mm; corolla pink or pink-purple, 3–3.5 mm. |
Loments | margins sometimes slightly involute, sutures equally crenate; connections central, 1/5 as broad as segments; segments 2–4, rounded, 3–3.5 × 3 mm, rounded abaxially and adaxially, inconspicuously reticulate, glabrous; stipe 1–1.5 mm. |
Desmodium rosei |
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Phenology | Flowering late summer–fall. |
Habitat | Dry, open woodlands, with yucca, desert shrubs, grasslands, pinyon-juniper woodlands, on ledges. |
Elevation | 1000–2400 m. (3300–7900 ft.) |
Distribution |
AZ; NM; Mexico (Chihuahua, Sonora, Zacatecas)
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Discussion | Desmodium rosei is known in the flora area from southeastern Arizona and southwestern New Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | |
Sibling taxa | |
Name authority | B. G. Schubert: Contr. Gray Herb. 129: 22, plate 1, fig. A. (1940) |
Web links |