Brongniartia

Dorado, Óscar, Cruz-Durán, Ramiro & García, Rubí Bustamante, 2022, Two new closely related species of Brongniartia (Fabaceae, Faboideae) from the Sierra Madre del Sur in Guerrero, México, Phytotaxa 544 (1), pp. 1-10 : 7

Key for identification of this group of species of the Podalydioides group of Brongniartia .

1. Branches and foliage glabrous or hirtelous with whitish hairs; southeastern Estado de Mexico .................................... B. funiculata

- Branches and foliage hirtelous with whitish or brownish hairs or rarely glabrous; northern and central Guerrero. .........................2

2. Multi-stemmed shrub, several branched from the base; stipules (1.5–) 3–5 mm wide; leaflets 6–12(–16) × (3–) 4–8 mm; southern face of the Neovolcanic Transversal Belt in the vicinity of Taxco, Guerrero .................................................................. B. abbottiae

- Single-stemmed shrub, normally with only a single main branch; stipules (3–)4–10(–18) mm wide; leaflet 11–30(–43) × 4–13(–15) mm; Sierra Madre del Sur in the vicinity of Chilpancingo and Eastern ward ...................................................................................3

3. Petals yellowish white; standard 9.9–11.6 × 11.7–14.4 mm; wing petals 8.4–11 × 4.2–4.9 mm; keel petals 1.02–1.6 cm ................ ........................................................................................................................................................................................... B. alvarezii

- Petals pink or pale pink, to salmon (in older herbarium flowers); standard 6.3–6.9 × 8.5–11.1 mm; wing petals 7.1–7.6 × 3.4–3.9 mm; keel petals 0.73–0.77 cm .......................................................................................................................................... B. variabilis