Trichoglottis Blume (1825: 359)

Kocyan, Alexander & Schuiteman, André, 2013, New combinations in Aeridinae (Orchidaceae), Phytotaxa 161 (1), pp. 61-85 : 77

Trichoglottis Blume (1825: 359) . Type species: Trichoglottis retusa .

Ceratochilus Blume (1825: 358) Type species: Ceratochilus biglandulosus Blume.

Synptera Llanos (1851: 98) . Type species: Synptera subviolacea Llanos.

Stauropsis Reichenbach (1860: 117) . Type species: Stauropsis philippinensis (Lindl.) Rchb. f.

Staurochilus Ridley (1896: 351) . Type species: Staurochilus fasciatus (Rchb.f.) Ridl.

Sarothrochilus Schlechter (1906b: 50) . Type species: Sarothrochilus dawsonianus (Rchb.f.) Schltr.

Ventricularia Garay (1972: 211) Type species: Ventricularia tenuicaulis (Hook.f.) Garay.

Molecular phylogenetic studies indicate that the generic bounderies of Trichoglottis ( Fig. 1L, M ) should be altered ( Topik et al. 2005, Kocyan in prep.). We propose to include the small genera Ceratochilus and Ventricularia , and it has become clear that the disputed genus Staurochilus is part of Trichoglottis . Ceratochilus has never before been considered to be closely related to Trichoglottis . However, in our analysis it is sister to T. pusilla (Teijsm. & Binn.) Reichenbach (1856: 325) with strong bootstrap support. If Ceratochilus is excluded from Trichoglottis then T. pusilla should be excluded as well. We consider this unwarranted. Ventricularia is similar to Trichoglottis , differing only in some floral details. It is not surprising to find that it is nested within Trichoglottis . Staurochilus was previously separated from Trichoglottis by the presence of mostly strap-shaped leaves and elongate, racemose or paniculate inflorescences with many flowers opening at the same time (e.g. Seidenfaden 1988) whereas others (e.g. Garay 1972) did not distinguish the two genera. In our analysis Staurochilus emerges as a polyphyletic group nested within Trichoglottis .

Trichoglottis biglandulosa (Blume) Kocyan & Schuit. , comb. nov. Basionym: Ceratochilus biglandulosus Blume (1825: 358) .

Trichoglottis borneensis (J.J.Wood) Kocyan & Schuit. , comb. nov. Basionym: Ventricularia borneensis Wood (1998: 175) .

Figures

FIGURE 1. Selected flower images of the newly combined taxa to illustrate floral diversity among Aeridinae. A, Brachypeza unguiculata; B, Dimorphorchis breviscapa; C, Grosourdya myosurus; D, Phalaenopsis difformis; E, Renanthera caloptera; F, Thrixspermum breviscapum; G, Robiquetia punctata; H, Robiquetia minimiflora; I, Renanthera porphyrodesme; J, Taeniophyllum javanicum; K, Trachoma phillipsii; L, Trichoglottis biglandulosa; M, Trichoglottis ventricularis. Photographs by A. Kocyan (A, B, D, E, G–M), P. O’Byrne (C) and P.T. Ong (F).