Rhynchosia lateritia Burkart [Familia Fabaceae]

Descripción y datos generales

Publicación original

Burkart. (1952). Las Leguminosas argentinas, silvestres y cultivadas, 545.

Status

Endémica

Hábito

Subarbusto

Ciclo de vida

Perenne

Descripción morfológica

Subshrub prostrate, stems simple, pilose to villous, indumentum light yellow, with sparse yellow vesicular glands, but lacking bulbous-based trichomes. Stipules 5–6 × 1–1.5 mm, free, caducous, lanceolate, externally pubescent with yellow vesicular grands, but lacking bulbous-based trichomes. Leaves trifoliolate; petiole 2.3–4.2 cm long; leaf rachis 1.2–2 cm long; stipels caducous; leaflets 3–8.5 x 1.9–5.9 cm, ovate, elliptical, obovate or rounded, surface not bullate, cuneate to rounded at apex and base, margin entire, pilose, with yellow vesicular glands on both surfaces. Inflorescences axillary, racemose, 7–21 cm long, many-flowered, exceeding the length of the subtending leaf; bracts caducous; pedicel 0.5–2.2 mm long. Flowers 7–12 mm long excluding the pedicel; calyx 9–11 mm long, pubescent, with yellow vesicular glands but lacking bulbous-based trichomes, lobes lanceolate, generally all of them equaling or exceeding the corolla in length (but sometimes slightly smaller on flowers of the same specimen); standard petal 11–12 × 6.5–8 mm, obovate, emarginate to rounded at apex, pilose, with yellow vesicular glands, but lacking bulbousbased trichomes, claw 1.5–2 mm long, auricle ca. 0.5 mm long; wing petals 10.5–11.5 × 2–3 mm, oblong, claw 2.5–3 mm long, auricle 0.5 mm long; keel petals 10–11 × 3–4 mm, falcate, claw 2.5–3.5 mm long; stamens 12.5–13.5 mm long; ovary 3.5–4.2 mm long, pubescent, with yellow vesicular glands. Fruits 1.1–2.3 × 0.6–0.8 cm, brown, without constrictions between the seeds, oblong, pilose to pubescent, with yellow vesicular glands but lacking bulbous-based trichomes. Seeds 3–4 × 3 mm, ovate, unicolored, brown.

Material tipo

ARGENTINA, Misiones, Apóstoles, sabana quebrada, November 1943 (fr.), A. Burkart 14356 (Lectotype, designado por Bezerra et al., 2024: SI 002517 [digital image!]; isolectotype: SI 002518 [digital image!]).

Distribución

Distribución por país

Ilustraciones

Ejemplares de herbario

Referencias bibliográficas por País

Vouchers — Ejemplares examinados

Colecciones de referencia

Registros de herbario determinados actualmente con este nombre.

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Estado de conservación