Rhynchosia reniformis |
Rhynchosia edulis |
|
---|---|---|
dollarleaf |
Chihuahuan snoutbean |
|
Habit | Herbs. | |
Stems | usually ascending or erect, rarely twining, glabrous or sparsely to densely hirtellous, hairs grayish. |
erect, suberect, decumbent, procumbent, or twining, viscid, hirsute, hairs yellowish. |
Leaves | usually unifoliolate, distalmost rarely trifoliolate; stipules persistent, lanceolate to ovate-lanceolate, 4–15 × 1–4.5 mm, apex acute to acuminate; petiole 15–45 mm, hirtellous; leaflet blades suborbiculate to reniform or ovate to oblong, 20–50 × 25–70 mm, leathery, gland-dotted, base truncate, broadly rounded to cuneate, or subcordate, apex obtuse, broadly rounded, emarginate to mucronate, surfaces reticulate and hirtellous abaxially, rugose and strigulose, glabrescent adaxially. |
trifoliolate; stipules persistent, linear to narrowly lanceolate, 3–9 × 0.5–1.5 mm, apex acute to acuminate, surfaces hirsute; petiole 15–55 mm, hirsute; leaflet blades lanceolate to obovate-oblong or ovate-deltate, 15–70 × 10–60 mm, membranous or leathery, gland-dotted, often viscid, base obtuse to rounded or truncate, margins ciliate, slightly revolute, apex acute to acuminate, surfaces strongly reticulate and sparsely to densely hirsute abaxially, strigulose to strigose adaxially. |
Inflorescences | crowded in densely packed heads, flowers numerous, shorter than leaves, 1–3.5 cm. |
racemes, equal to or longer than leaves, 2.5–20 cm. |
Pedicels | 1–3 mm. |
1–3 mm. |
Flowers | calyx 7–10 mm, densely hirtellous, gland-dotted, tube 1.5–2 mm, lobes linear-lanceolate, laterals 7–8 mm, adaxials 2 mm; corolla yellow; banner elliptic-ovate, 6.5–7 × 6–6.5 mm, emarginate, glabrous; wings narrowly oblong, 6.5–7 × 1.5–2.5 mm, glabrous; keel 6.7–7 × 2–2.5 mm, glabrous; stamens 6–7 mm. |
calyx 4–7 mm, hirsute, tube 1.5–2 mm, lobes lanceolate, laterals 2–2.5 mm, lengths to 2.5 times tube, adaxials 1.5–3 mm; corolla yellow, striped reddish brown or purple; banner widely ovate to obovate, 7–10 × 4–5 mm, slightly apiculate, hirtellous and gland-dotted; wings narrowly oblong, 6.5–9 × 1.5–2 mm, gland-dotted, puberulent apically; keel 6.5–9 × 2–3 mm, glabrous; stamens 6–9 mm. |
Legumes | oblong-ellipsoid, compressed, 13–18 × 5–7 mm, gland-dotted, hirtellous. |
oblong-ovoid, compressed, 16–26 × 6–8 mm, often viscid, long-hirsute to puberulent, hairs intermixed, glabrescent. |
Seeds | brown, black, or mottled, subglobose, compressed, 3 × 3 mm. |
greenish brown or mottled, widely ovoid to subglobose, compressed, 4–5 × 3–4 mm. |
Vines | , herbaceous. |
|
Rhynchosia reniformis |
Rhynchosia edulis |
|
Phenology | Flowering spring–summer. | Flowering spring–summer. |
Habitat | Dry woodlands, sandhills, savannas, prairie openings, fields, roadsides. | Sandy or clay soils of woodland, thickets, ravines, pastures, stream banks, roadsides. |
Elevation | 20–300 m. (100–1000 ft.) | 800–1500 m. (2600–4900 ft.) |
Distribution |
AL; FL; GA; LA; MS; NC; SC; TN; TX
|
AZ; Central America; South America; Mexico (Chiapas, Durango, Guerrero, Jalisco, Michoacán, Nayarit, San Luis Potosí, Sonora, Veracruz) |
Discussion | In Texas, Rhynchosia reniformis is known from relatively few counties in the easternmost part of the state. Glycine monophylla (Michaux) Nuttall, G. reniformis Pursh, Rhynchosia intermedia (Torrey & A. Gray) Small, and R. simplicifolia (Walter) Alph. Wood are illegitimate names that pertain here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
In Arizona, Rhynchosia edulis is found only in Santa Cruz County. Dolicholus melanostictus (Grisebach) Kuntze is an illegitimate name that pertains here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 11. | FNA vol. 11. |
Parent taxa | Fabaceae > subfam. Faboideae > Rhynchosia | Fabaceae > subfam. Faboideae > Rhynchosia |
Sibling taxa | ||
Synonyms | Arcyphyllum simplicifolium, Dolicholus intermedius, D. simplicifolius, Glycine simplicifolia, G. tomentosa var. monophylla, Psoralea alnifolia, P. alopecurina, R. simplicifolia var. intermedia, R. tomentosa var. intermedia, R. tomentosa var. monophylla, Trifolium simplicifolium | Dolicholus apoloensis, D. ixodes, Eriosema edule, E. nigropunctatum, E. volubile, R. apoloensis, R. ixodes, R. melanosticta, R. nigropunctata, R. pinetorum, R. rariflora, R. rupicola |
Name authority | de Candolle in A. P. de Candolle and A. L. P. P. de Candolle: Prodr. 2: 384. (1825) | Grisebach: Abh. Königl. Ges. Wiss. Göttingen 19: 123. (1874) |
Web links |