Oxalis spiralis subsp. vulcanicola (Donn.Sm.) Lourteig

narrow and acute apex, 2.5-5.5 mm long, slightly pubescent. Inflorescences of lateral, axillary and terminal cymes taller than the foliage, (1-)2-17-flowered; peduncles to 12 cm; bracts 1.5-4 mm long and bracteoles ca. 1 mm long, linear, pubescent; pedicels to 16 mm long, articulate near the base. Flowers with the sepals linear, 5-7 mm long, 0.75-1.5 mm wide, narrowed towards the apex, acute, glabrous or somewhat pubescent; petals yellow, obovate, cuneate 12-18 mm long, violaceous-veined; stamens with filaments short, glabrous, the longer stamens ca. 6 mm long with an obtuse ligule near the middle; the shorter stamens ca. 2 mm long, connate halfway up; pistils micro-, meso-, and macrostylous, 6 mm long; the ovary glabrous, the styles very thin, the stigma bifid, capitate papillose. Cap-sule ellipsoid, acute ca. 6 mm long, glabrous, the calyx the same length, the carpels 3-4-seeded; seeds oblong ca. 1 mm long, dark violaceous.