骨缘囊瓣芹 gu yuan nang ban qin

Plants ca. 25 cm. Stems 1–3, slender. Basal leaves petiolate, petioles 3.5–25 cm; blade ovate in outline, 3–8 × 3–7 cm, ternate; ultimate segments broad-ovate, 2–3 × 1–3 cm, somewhat coriaceous, abaxially slightly glaucous, margins serrate, veins and margins cartilaginous and sparsely setose. Cauline leaves usually 1. Inflorescence branching, umbels 1–2 cm across in flower, larger in fruit; bracts absent; rays 10–20; bracteoles 2, ca. 0.4 mm; umbellules 2-flowered; pedicels 0.2–2 mm. Calyx teeth subulate, ca. 1 mm. Petals white. Stylopodium conic; styles elongate; stylopodium plus styles ca. 1 mm. Fruit ovoid, 2.5–3 × ca. 2.5 mm; ribs denticulate; vittae not recorded. Fl. and fr. Mar–Jul.

Forests, riparian grasslands; 2400–2500 m. W Yunnan.

This poorly known taxon is recorded only from a few collections.