Genus Crepidium subgenus Pseudoliparis section Oistochilus
Crepidium subgenus Pseudoliparis section Oistochilus Ormerod, Checkl. Papuasian Orch. (2017) 141
- Pseudoliparis Finet section Oistochilus (Schltr.) Marg., Ann. Bot. Fennici 40 (2003) 66.
- Microstylis (Nutt.) Eaton section Oistochilus Schltr., Repert. Spec. Nov. Regni Veg., Beih. 1: 120. (1911) 1914.
- Malaxis Sol. ex Sw., section Oistochilus (Schltr.) Kores, Allertonia 5 (1989) 46.
Leafy stems erect or ascending, usually with amplexicaul leaf petioles and and 1-few scales at the base. Inflorescences elongate elongating with age, many-flowered, with relatively small, somewhat fleshy flowers. Petals usually broad, only exceptionally narrow. Sepals 3-nerved. Lip in outline usually sagittate with the mid-lobe distinctly separated from the lateral lobes by a shallow indentation, in 3 species horseshoe-shaped to nearly cordate with the mid-lobe grading in the lateral lobes (P. hippocrepiformis, P. moluccana and P. wappeana). Lip lamellae parallel, close together. Column usually papillose, with rostellum distinctly shorter than the elongate staminodes, and anther narrow, or column very minutely papillose, staminodes shorter than rostellum, and anther relatively broad (P. hippocrepiformis and P. moluccana).
(after Margonska 2003)