Eulophia grandidieri H.Perrier, Bull. Soc. Bot. France 82: 149 (1935).
Homotypic Synonyms:

Lissochilus grandidieri (H.Perrier) H.Perrier, in Fl. Madag. 49(2): 8 (1941).
Description:
Plants terrestrial, 50-70 cm tall, leaves developing slightly prior to flowering, 4-5, graminiform, narrow (10-30 x 1-1.2 cm) and very acute. Peduncle nearly twice as long as the cluster, with 2-3 scarious, appressed, thin sheaths; clusters loosely 20-25 flowered; bracts linear, acute, equal to about half the length of the pedicel. Sepals lanceolate-linear (15-16 x 3.5-4 mm), shortly acuminate-obtuse, 5 veined, veins always several times bifurcated, laterals adnate to the base of the labellum. Petals elliptical-obtuse (11 x 6mm), 5 veined. Labellum elongated basally, incurved, gutter shaped with an oblique spur. obtuse and 3 mm, long; limbus in front of the spur oriface deeply trilobed; lateral lobes widely obtuse, wider than the median; median lobe oval-obtuse (6 x 5 mm), fimbriated marginally; provided basally with 2 large, obtuse, connical calluses which sec elongated behind to the base of the labellum by 2 keels, and accompanied by 2 other small calluses in front, which sec elongated by 2 rows of large humps which end covering the median lobe. Anther (2.5 mm), topped by a thick, l mm tall appendage which is thickened and emarginate apically; pollina semi-orbicular, fixed by a wide crescent shaped retinacle, generally being one-third wider than 2 pollina. Column 5-6 mm posterior margins of the clinandrium enlarged in an acute angle, l mm tall. Pedicel glabrous, 2.2-2.5 cm long.
Habitat:
Not recorded, at unknown elevations.
Cultivation:
As given for the genus.
Distribution:
E. Madagascar
References:
Flora of Madagascar: vascular plants: 49th family, Orchids / by H. Perrier de La Bathie; published under the auspices of the government of Madagascar and under the direction of H. Humbert; English revision and translation by Steven D. Beckman; Orchids of Madagasdcar Hermans, Cribb Bosser and Du Puy 2007; A Field Guide to the Orchids of Madagascar Hermans & Cribb 2009; POWO (2022). "Plants of the World Online. Facilitated by the Royal Botanic Gardens, Kew. Published on the Internet; http://www.plantsoftheworldonline.org/ Retrieved 26 November 2022."
Images:
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