Pinalia cf. excavata (Lindl.) Kuntze, Revis.

Ormerod, Paul, Kurzweil, Hubert & Watthana, Santi, 2021, Annotated List of Orchidaceae for Myanmar, Phytotaxa 481 (1), pp. 1-262 : 202

Pinalia cf. excavata (Lindl.) Kuntze, Revis. Gen . Pl. 2: 679, 1891

Basionym: Eria excavata Lindl. , Gen . Sp. Orchid. Pl.: 67, 1830.

Specimens examined:— CHIN. Mindat District : 1924, Cooper 6088 ( E) ; same loc., 1900−2100 m, 23 May 2004, Tanaka et al. 031148 ( MBK) ; same loc., 13 May 2007, Kyaw Khaing s.n. ( TNS [s]) ; same loc., 9 Aug 2008, Yasuda 060053 ( MBK) ; same loc., 2040 m, 19 May 2012, Fujikawa et al. 089046 ( MBK) .

Distribution:— The Himalayas, northeastern India,?western Myanmar,? Thailand and southwestern China.

Notes:— The species epithet refers to its usually excavate column-foot, but King & Pantling (1898: 124) pointed out that the column-foot is not excavate in fresh Sikkim specimens. The Myanmar specimens listed above have pseudobulbs consisting of 3–4 nodes, which corresponds well with Wallich (1831: t. 160), the type specimen of the heterotypic synonym E. sphaerochila Lindl. (K), and Hynniewta et al. (2000: 167); however, other specimens of Pinalia excavata have single-noded pseudobulbs ( Chen et al. 2009: 355, Pearce & Cribb 2002: 368), which may indicate that more than one taxon is involved. Pinalia excavata is close to the Myanmar endemic P. brownei , which is a generally larger plant only inconspicuously hairy on scape and sepals. Further studies are needed.