Rhynchosia precatoria |
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praying snoutbean, rosary snoutbean |
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Habit | Subshrubs. |
Stems | sprawling or twining, gland-dotted, rarely viscid, villous or villosulous, hairs silvery or grayish and silvery intermixed. |
Leaves | trifoliolate; stipules early deciduous, ovate or lanceolate, 4–6 × 1.5–2 mm, apex acute or acuminate, surfaces villosulous; petiole 1–7 mm, rarely viscid, villous or villosulous; leaflet blades obovate to ovate-lanceolate or ovate-rhombic to rhombic, 20–130 × 15–100 mm, leathery, gland-dotted, base rounded to obtuse or cuneate, apex acute to acuminate, surfaces villous or villosulous abaxially, villous or villosulous adaxially, rarely glabrescent. |
Inflorescences | racemes, longer than leaves, 5–30 cm. |
Pedicels | 1–2 mm. |
Flowers | calyx 4–5 mm, villosulous, often viscid, tube 2–2.5 mm, lobes lanceolate, laterals 2–3 mm, lengths to 2.5 times tube, adaxials 1–1.5 mm; corolla green-yellow, streaked purple or brown; banner orbiculate, 8–9 × 6–7 mm, emarginate, villosulous, gland-dotted; wings oblong, 6–7 × 2–2.5 mm, often gland-dotted, puberulent apically; keel 6–8 × 3–3.5 mm, puberulent apically; stamens 8–9 mm. |
Legumes | brown or greenish, widely ovoid-oblong, subinflated, constricted, 20–30 × 7–12 mm, gland-dotted, rarely viscid, densely villosulous to puberulent. |
Seeds | red and black, subglobose to ovoid, plump, 5–8 × 4–6 mm. |
Rhynchosia precatoria |
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Phenology | Flowering spring–summer. |
Habitat | Sandy soils or limestone, open areas, thickets, forests. |
Elevation | (0–20) or 600–1200 m. ((0–100) or 2000–3900 ft.) |
Distribution |
AZ; FL; Central America; South America; Mexico (Baja California Sur, Chiapas, Chihuahua, Colima, Guerrero, Jalisco, México, Michoacán, Nayarit, Oaxaca, San Luis Potosí, Sonora, Veracruz) |
Discussion | Rhynchosia precatoria is native in Santa Cruz County, Arizona; it is considered introduced in Florida, where it is found in Miami-Dade County. Glycine precatoria Humboldt & Bonpland ex Willdenow is a superfluous and illegitimate name that pertains here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. |
Parent taxa | |
Sibling taxa | |
Synonyms | Dolicholus vailiae, Indigofera volubilis, R. bicolor |
Name authority | de Candolle in A. P. de Candolle and A. L. P. P. de Candolle: Prodr. 2: 385. (1825) |
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