Oberonia pachystachya Lindl.

Geiger, D. L., 2020, Studies in Oberonia 8 (Orchidaceae: Malaxideae). Additional 24 new synonyms, a corrected spelling, and other nomenclatural matters, Blumea 65 (3), pp. 188-203 : 198-199

Oberonia pachystachya Lindl. — Fig. 12

Oberonia pachystachya Lindl. (1859) 6. — Syntypes: Catlett 37 (K s.n.; illustration of type lot in W35392). S.[outh] Sea Islands.

Oberonia trigonoglossa Schltr.(1911a) 166; (1923) pl. 65, f. 231. — Syntype: Schlechter 18840 (B, lost), [ Papua New Guinea,] forests of the Bismarck mountains, 1600 m, syn. nov.

Notes — Lindley’s description is rather rudimentary; however, the illustration on the type in Lindley herbarium at K clearly shows the same species ( Fig. 12 ). The erect habit with multiple rather short leaves on the stem, and rather short inflorescence agrees between O. trigonoglossa and O. pachystachya . Additional common characters include the acuminate acute bract ( Fig. 12c, e ), the ovate-oval petals with erose margin ( Fig. 12b, f ), and the inverted triangular lip ( Fig. 12b, d ), described as oval pointed by Lindley.

Figures

Fig. 12 a–c. Syntype Catlett 37 (K) of O. pachystachya. a. Habit; b–c. drawings on syntype sheet Catlett 37 (K); b. flower; c. floral bract; d–f. illustrations of O. trigonoglossa from Schlechter (1923: pl. 65, f. 231); d. lip; e. floral bract; f. top view of entire flower.