Oberonia costeriana J.J.Sm.

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 : 194

Oberonia costeriana J.J.Sm. — Fig. 5

Oberonia costeriana J.J.Sm. (1905) 244. — Syntypes: Blume s.n. (L 0061737), [ Indonesia, Java] Mount Gede , at the water fall, parasitic; De Monchy s.n. (repository unknown), [ Indonesia, Java,] Krawang; Junghuhn s.n. (L 0063834); J.J. Smith s.n. (repository unknown), [ Indonesia,] Pekalongan, Djolotigo; J.J. Smith s.n. (repository unknown), [ Indonesia,] Sumatra; unknown collector s.n. (repository unknown), Indonesia, Java, Buitenzorg [= Bogor], Bobodjong.

Oberonia vulcanica Schltr. (1911b) 24; (1934) pl. 18, f. 96. — Syntype: Schlechter 20509 (B, lost), [ Indonesia,] on trees in the forest of the Gunong Mahawo ( Minahassa ), Sulawesi, 1200 m, syn. nov.

Notes — Oberonia costeriana has several synonyms ( Geiger 2019), such as O. elmeri Ames ( Fig. 5b ), O. kinabaluensis Ames & C.Schweinf. ( Fig. 5d ), O. obesa Ames ( Fig. 5c ), and O. gigantea Fukuy. Here one further taxon, O. vulcanica , is identified as conspecific with O. costeriana ( Fig. 5e ). The shared characters include the trapezoidal lateral lobes with downward pointed tips, the bifid epichile, the rhombic petals and the acuminate acute floral bract with erose margins, and the dirty orange colour (fox-brown in Schlechter 1911b: 24). The description of the habit also matches O. costeriana (acaulescent with falcate-linear leaves).

Figures

Fig. 5 Oberonia costeriana. a. Illustration of the species by J.J. Smith, from Schuiteman & De Vogel (2006); b. drawing of O. elmeri from syntype ADE Elmer 8434 (AMES); c. drawing of the lip on type sheet of O. obesa (AMES 14194); d. drawing of O. kinabaluensis from Ames (1920); e. drawing of O. vulcanica flower and floral bract from Schlechter (1934: pl. 18, f. 96).