Dimorphorchis, Rolfe, 1919

Kocyan, Alexander & Schuiteman, André, 2013, New combinations in Aeridinae (Orchidaceae), Phytotaxa 161 (1), pp. 61-85 : 64

DIMORPHORCHIS

Dimorphorchis Rolfe (1919b: 149) . Type species: Dimorphorchis lowii (Lindl.) Rolfe. Lowianthus Beccari (1902: 531) . Type species: Lowianthus borneensis Becc. , nom. illeg.

The following three taxa were previously included in Arachnis , but they are much more closely related to Dimorphorchis . Given their similar flowers and, albeit weekly supported, sister group relationship to D. rossii Fowlie and D. beccarii in our analysis, we consider it preferable to include them in Dimorphorchis rather than to create one or even two new small genera to accommodate them. A proposal to conserve Dimorphorchis ( Fig. 1B ) against Lowianthus is in preparation (P.J. Cribb, pers. comm.).

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).