Rhynchosia rojasii Hassl. [Familia Fabaceae]

Descripción y datos generales

Publicación original

Hassl. (1909). Repert. Spec. Nov. Regni Veg., 7, 77.

Status

Nativa

Hábito

Enredadera

Ciclo de vida

Perenne

Descripción morfológica

Vines herbaceous or suffrutescent, twining, stems simple or branched, pilose to pubescent, indumentum light yellow to yellow, with yellow vesicular glands and a few bulbous-based trichomes. Stipules 7.1–10 × 1–2.5 mm, free, persistent, lanceolate, externally pubescent with yellow vesicular glands, but lacking bulbous-based trichomes. Leaves trifoliolate; petiole 3.5–10.2 cm long; leaf rachis 2–3 cm long; stipels persistent; leaflets 4.1–11.7 × 2.8–8.9 cm, ovate, deltoid or rhombic, surface not bullate, attenuate or acute at apex, obtuse, truncate, or rounded at base, margin repand to entire, pilose, with yellow vesicular glands on abaxial surface. Inflorescences axillary, racemose or paniculate, 13–28 cm long, many-flowered, exceeding the length of the subtending leaf; bracts caducous; pedicels 2–4 mm long. Flowers 7–13 mm long excluding the pedicel; calyx 4–6 mm long, pubescent with yellow vesicular glands and sparse bulbous-based trichomes, lobes lanceolate, not exceeding the corolla in length; standard petal 9–12 × 8–9 mm, oblong or obovate, retuse to rounded at apex, pilose to pubescent, with yellow vesicular glands, but lacking bulbous-based trichomes, claw 1–1.5 mm long, auricle ca. 0.5 mm long; wing petals 9.5–10.5 × 1–2 mm, oblong, claw 1–2.5 mm long, auricle ca. 0.5 mm long; keel petals 10–12 × 2–4 mm, falcate, claw 2–3 mm long; stamens 10–13 mm long; ovary 2.9–3.5 mm long, pubescent, with yellow vesicular glands. Fruits 3–4 × 0.5–0.8 cm, greenish to brownish, without constrictions between the seeds, narrowly obovate, pilose to pubescent, with yellow vesicular glands, but lacking bulbous-based trichomes. Seeds 4–6 × 3–4 mm, ovate or reniform, unicolored, brown to dark brown

Material tipo

PARAGUAY, “Sierra de Amambay ad margines silvarum, in via sylvatica “Picada” dicta pr. Punta Porá, flor. et cum fruct. mat. mens.”, April 1907-08(fl.), Rojas 10424 (Lectotype, first-step designated by Grear [1978]; second-step designado por Bezerra et al., 2024: G 00400154 [digital image!]; isolectotypes: BAB 000498 [fragment] [digital image!]; BM 000538498 [digital image!]; C 10012341 [digital image!]; F 1539661 [digital image!]; G 00400118, 00400119, 00400120 [digital image!]

Distribución

Distribución por país

Sinonimia (1 sinónimo)

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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