Trisepalum birmanicum (Craib) B. L. Burtt

Chlamydoboea connata ChlamydoboeaconnataCraib (Notes Roy. Bot. Gard. Edinburgh 10: 211. 1918) and Paraboea connata (Craib) C. Y. Wu ex H. W. Li (Fl. Yunnanica 5: 628. 1991) are probably synonyms of Trisepalum birmanicum; however, the type of C. connata has never been found (see Burtt, Notes Roy. Bot. Gard. Edinburgh 41: 448. 1984).

Perennials. Stems 15-50 cm, appressed woolly to pannose. Petiole 0.6-5(-6) cm; leaf blade ovate to elliptic, 2.5-5(-8.5) X 1.2-3(-6.5) cm, adaxially densely appressed puberulent, abaxially appressed woolly to pannose, margin serrulate to crenulate, apex acute; lateral veins 5-7 on each side of midrib. Peduncle 0.5-3.5(-6) cm, appressed woolly to pannose. Calyx 6-11 mm; adaxial lip lobes 0.7-2 X ca. 1 mm; abaxial lip segments narrowly triangular, 5-10 X 1-2 mm, outside appressed woolly to pannose, inside glabrous. Corolla pinkish, seldom white, ca. 7-10 X 5-9 mm, outside glabrous; tube ca. 4-6 X 3.5-6 mm; lobes suborbicular, 2-4 mm. Filaments 1.5-2.5 mm; staminode 0.3-1 mm. Pistil 1-1.1 cm, glabrous. Style 3-6 mm. Capsule 1-2 cm. Fl. Sep, fr. Oct.

SW Sichuan (Yanyuan Xian), S Yunnan [Myanmar, Thailand].

Rocks in thickets; 1000-1700 m.

Boea birmanica Craib, Bull. Misc. Inform. Kew 1913: 114. 1913; B. paniculata Handel-Mazzetti (1925), not Ridley (1896); Dichiloboea birmanica (Craib) Stapf.