Phaseolus vulgaris L.

  • Authority

    Acevedo-Rodríguez, Pedro. 2005. Vines and climbing plants of Puerto Rico and the Virgin Islands. Contr. U. S. Natl. Herb. 51: 1-483.

  • Family

    Fabaceae

  • Scientific Name

    Phaseolus vulgaris L.

  • Description

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    Description - Herbaceous vine, climbing or creeping, attaining 3 m in length, or sometimes an erect herb. Stems obtuse-pentagonal or cylindrical, puberulent. Leaves alternate, trifoliolate; leaflets chartaceous, the apex acuminate, the margins entire; upper surface dark green, dull, appressed-puberulent, with slightly prominent venation; lower surface pale green, appressed-puberulent, with prominent venation; terminal leaflet 6-10 x 5-7.5 cm, deltate or rhombic, the base cuneate or truncate; lateral leaflets asymmetrically deltate, the base truncate-obtuse; petiolules thickened, 4-6 mm long, pilose; rachis 1.8-2.8 cm long, marginate or slightly winged; petioles 8-15 cm long, adaxially flattened, marginate, puberulent; stipules triangular, ca. 4 mm long; stipels oblong, ca. 3 mm long. Inflorescences of axillary pseudoracemes, the rachis up to 8 cm long, uncinate-pubescent, the flowers usually 4, in groups of 2 per node, this with an ovate bract, persistent at the base; pedicels 7-8 mm long, pilose; bracteoles elliptic-ovate, rounded at the apex, up to 7.5 mm long. Calyx 3.5-4 mm long, green, obliquely campanulate, puberulent, the sepals unequal; corolla white to lilac, pink, or purple, the standard semicircular, ca. 10 mm long, glabrous, the wings obovate, unguiculate, longer than the standard, the keel spirally twisted, ca. 1 cm long; stamens 10, diadelphous, the vexillar stamen broadened at the base; ovary strigulose. Fruit an oblong legume, slightly flattened, straight or slightly curved, 9-12 x 1-1.2 cm, glabrous, long-apiculate at the apex, dehiscent by valves that separate longitudinally. Seeds oblong-reniform, 1-1.2 mm long, of various colors, reddish brown, grayish with dark spots, pink.

    Phenology - Collected in flower and fruit from May to July and in November.

    Conservation Status - Exotic, cultivated and naturalized, uncommon.

  • Common Names

    habichuelas, frijoles