Polygala umbonata Craib

Herbs annual, erect, (10-)15-20 cm tall. Stems terete, longitudinally angular, glabrous, branching apically; branchlets spreading, slender. Petiole ca. 1 cm; leaf blade abaxially glaucescent, adaxially green, ovate or elliptic to elliptic-lanceolate, 3-4 × 1.5-2 cm, papery, abaxially glabrous, adaxially sparsely white setose or along margin densely minutely setose, midvein raised abaxially, impressed adaxially, lateral veins 5 or 6 pairs, anastomosing near margin, base cuneate, decurrent, apex acuminate. Racemes terminal or axillary, 1-4 cm. Pedicel 0.5-1 mm, slender; bracts 3, caducous, subulate, unequal. Sepals 5, caducous; outer sepals 3, ovate, ca. 1.5 mm; inner sepals 2, petaloid, elliptic, 3-3.5 mm, base unguiculate, apex rounded. Petals 3, connate in lower 1/2, yellow; lateral petals rectangular-oblong, longer than keel; keel with apex broadly retuse, with appendage of 2 lobes each with 2 points. Stamens 8; filaments lower 2/3 united, forming an open staminal sheath; anthers ovoid. Ovary ellipsoidal, ca. 1 mm, ca. 0.5 mm in diam.; style broadening from base toward apex but then narrowing at apex, curved, apex obliquely funnelform. Capsule suborbicular, ca. 3 mm in diam., winged. Seeds black, elliptic, ca. 1.2 mm, ca. 1 mm in diam., tuberculate, sparsely white pilose, strophiole 2-lobed, decurrent, other end of seed with oblong slightly curved shiny black appendage ca. 2/3 as long as seed. Fl. and fr. Oct-Nov.

S Yunnan (Menghai) [Myanmar, Thailand].

Forests, moist lands in valleys; ca. 1200 m.

Heterosamara umbonata (Craib) Paiva.

Polygala umbonata là một loài thực vật có hoa trong họ Polygalaceae. Loài này được Craib miêu tả khoa học đầu tiên năm 1916.

凹籽远志（学名：Polygala umbonata）为远志科远志属下的一个种。