Koellensteinia tricolor (Lindl.) Reichenbach (1863b)

Thiago E. C. Meneguzzo, José F. A. Baumgratz & Cássio Van Den Berg, 2015, Taxonomic studies in the Aganisia complex (Orchidaceae, Zygopetalinae), Phytotaxa 238 (1), pp. 1-39 : 21

3.11. Koellensteinia tricolor (Lindl.) Reichenbach (1863b) .

Zygopetalum tricolor Lindley (1846 : sub t. 64). Warrea cinerea Lindley ex Bentham in Bentham (1881: 321), nom. illeg. Type:—GUYANA. S. loc., ex hort., s.d., Schomburgk sub Loddiges 931 (lectotype, here designated, K-L 857171!). Fig. 6 H

Koellensteinia roraimae Schlechter (1918b: 29) . Type: — VENEZUELA. Bolívar: Monte Roraima, December 1909, Ule 8582 (type B†, lectotype, here designated, MG 13636!), syn. nov.

Etymology:— From the Latin prefix tri-, three, and color, color, in reference to flower colour pattern.

Selected material examined:— BELIZE. Cayo: Mountain Pine Ridge, 3 August 1980, Adams 249 (K). BRAZIL. Roraima:Amarají, Serra do Tepequén, 12 May 2013, Pessoa 1152 (RB). GUYANA. Potaro-Siparuni: Pakaraima Mots, 22 February 1999, Henkel et al. 1591 (GH). VENEZUELA. Bolívar: Parque Nacional Canaima, 19 March 1993, Ramirez 3567 (VEN).

Distribution:— Belize, Guyana, Venezuela and northern Brazil: Roraima. TDWG code: 80 BLZ-OO 82 FRG-OO VEN-OO 84 BZN-RR.

Diagnostic characters:— Koellensteinia tricolor is similar to K. kellneriana and different from K. eburnea in its midlobe of the lip longer than the length between lateral lobes vs. lip midlobe width equal or subequal to the length between lateral lobes.

Nomenclatural notes:— There has been historical misuse of Warrea cinerea . Bentham (1881) published it as a superfluous name under Zygopetalum tricolor and attributed its authorship to Lindley. He also stated that the name should be combined under Aganisia , but failed by not linking the specific epithet to the genus ( McNeill et al. 2012: art. 35.2). Bentham & Hooker (1883) miss-credited the protologue of W. cyanea to W. cinerea , and most authors after that reproduced this mistake. Romero-Gonzaléz (2005) reported this problem, and here we add that W. cinerea has also been cited as a synonym of Aganisia cyanea (Lindl.) Rchb. f. because Jackson (1895) considered Koellensteinia a synonym of Aganisia and so confused K. tricolor with A. tricolor .

The selected lectotype of Koellensteinia roraimae is the only remaining duplicate of this material.

Figures

FIGURE 6. A. Koellensteinia carraoënsis. B. Koellensteinia graminea. C. Koellensteinia hyacinthoides. D. Koellensteinia florida, plant in situ. E. Manually opened flower of K. eburnea. F. Flower. G. Plant in situ. H. Koellensteinia tricolor. A – C. By K. Senghas, available through Swiss Orchid Foundation at Herbarium Jeny Renz. D – E. Meneguzzo 861 (RB). F – G. Meneguzzo 973 (RB). D – G. By Thiago E. C. Meneguzzo. H. Pessoa 1152 (RB), by Edlley M. Pessoa.