Habenaria robusta Welw. ex Rchb.f., Flora 50: 102 (1867).
Homotypic Synonyms:
Bilabrella robusta (Welw. ex Rchb.f.) Szlach. & Kras-Lap., Richardiana 3: 142 (2003).
Stem 4 ft. high, densely foliaceous. Leaves oblong-ovate, acute, 4 1/2–9 1/2 in. long, 1 1/2–2 in. broad, dense, erect, glaucous. Racemes cylindrical, many-flowered, 1 1/4 ft. long. Bracts oblong-lanceolate, shorter than the ovary, 8–11 lin. long. Flowers medium-sized. Dorsal sepal reflexed, oblong, acute, 2 1/2 lin. long; lateral much larger than the dorsal, reflexed, obliquely acute, 3 1/2 lin. long. Petals bipartite; lobes ligulate or lanceolate, acute; anterior lobe sometimes obtuse. Lip simple, linear, acute; spur cylindric-filiform, acute, 1/2 as long as the pedicels. Stigmatic processes rough or ciliate, 1 1/2 lin. long; apex capitate. Anther channels as long as the stigmas. Rostellum triangular, acute.

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Botanical Drawing / Herbarium
Photograph copyright Swiss Orchid Foundation at the Herbarium Jany Renz Image used with kind permission.