Pyrgophyllum (Gagnep.) T.L. Wu & Z.Y. Chen
Acta Phytotax. Sin. 27: 126 (1989); K. Larsen & R.M. Sm., Notes R. Bot. Gard. Edinb. 31: 287-295 (1972).
Medium-sized herbs with tuberous base. Inflorescence terminal on the leafy shoot; bracts 1-3, large, concave, with apical foliaceous appendage, their margins adnate to the inflorescence axis, enclosing a 1-3-flowered cincinnus; bracteole open to the base or absent; flowers yellow; calyx split down one side, 2-dentate; corolla tube twice as long as calyx; lateral staminodes narrow, about as long as the petals; labellum conspicuous and pendulous, emarginate or bifid, lobes obtuse; filament short, broad, anther with a triangular crest; ovary 3-locular. Capsule unknown. 2n = 42. (From Kubitzki, et al., p. 485)
Its one species, P. yunnanensis (Gagnep.) Wu & Chen, is found in the Yunnan and Sichuan provinces of China.
Phylogeny and Classification:
Previously referred to Kaempferia by Gagnepain, Camptandra by Schumann, and Caulokaempferia by Larsen and R.M. Smith; separated from these on anatomical, cytological and morphological grounds.
Only one species, P. yunnanensis (Gagnep.) Wu & Chen.
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