Epidendrum ypsilum Hágsater

Quispe-Melgar, Harold Rusbelth, Llacua-Tineo, Elizabeth Santiago Ayala Yashira Stefani & Hágsater, Eric, 2023, Synopsis of the Peruvian species of Epidendrum (Orchidaceae: Laeliinae) belonging to the Scabrum group, subgroup Soratae: diversity and description of a new species, Phytotaxa 603 (1), pp. 1-26 : 22

25. Epidendrum ypsilum Hágsater & E. Santiago, (2006: t. 900). ( Figure 10F ).

Type:— PERU. Amazonas: Prov. Chachapoyas: middle eastern Calla Calla sloptes, near km 415–418 of Leimebamba–Balsas road, 2900– 3150 m, 20 August 1962, J . Wurdack 1735, ( holotype: US! isotype: USM!) .

Distribution:— Peru, in the department of Amazonas. The species is restricted to the eastern slopes of the Andes in wet montane forests.

Notes:— Epidendrum ypsilum is recognized by its ca. 2 m high plants, with narrowly oblong or oblong-lanceolate leaves, the greenish yellow flowers with sparse wine-colored maculae, the lip with short, radiating wine-colored lines, and the sepals 6.2-7 mm long. In the subgroup Soratae there are 2 species of similar size: E. chrysomyristicum and E. fruticulus , but these species have slightly larger flowers with immaculate sepals, 9-13 mm long.

Conservation Status:— DD. Data deficient. As most orchids, listed in CITES appendix II.

Examined specimens: — PERU. Abra Barro Negro, carretera de Celedín hacia Leimebamba, Cordillera Calla Calla, 3424 m, 6 October 2020, Ocupa 269 ( HUT!) .

Figures

FIGURE 10. Species of the Soratae subgroup of the genus Epidendrum present in Peru. Illustrations by: R. Jiménez M. (A–E). M. López R. & R. Jiménez M. (F).