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Cynorkis rosellata (Thouars) Bosser, Adansonia, III, 19: 188 (1997).
Homotypic Synonyms:
Satyrium rosellatum Thouars, Hist. Orchid.: t. 8 (1822).
Habenaria mascarenensis Spreng., Syst. Veg. 3: 690 (1826), nom. superfl.
Gymnadenia rosellata (Thouars) A.Rich., Mém. Soc. Hist. Nat. Paris 4: 25 (1828).
Habenaria rosellata (Thouars) Schltr., Beih. Bot. Centralbl. 33(2): 406 (1915).
Heterotypic Synonyms:
Habenaria imerinensis Ridl., J. Linn. Soc., Bot. 21: 505 (1885).
Cynorkis imerinensis (Ridl.) Kraenzl., Orchid. Gen. Sp. 1: 490 (1898).
Imerinorchis imerinensis (Ridl.) Szlach., Orchidee (Hamburg) 56: 69 (2005).
Description:
Herbs, glabrous. 5-40 cm tall, roots 6-10, fusiform and fleshy; leaves 4-6, radical, flat against the soil, lanceolate-acute (4.5-7 x. 1-1.5 cm), attenuate-petiolate toward the base, Scape with 3-4 sheaths, bore; inflorescence short, very dense, 3-12 flowered, flowers lilac, punctate with red bracts generally equaling half the length of the pedicel. Sepals 3 veined and obtuse, the median (3-4 mm) hood shaped and adnate to the petals, the laterals larger (3.5-5.5 mm). Petals narrow (3-4 x 0.8-lmm.), obtuse, slightly auriculate-dilate basally on the front edge and 2 veined, Labellum lanceolate (4-6 x 1.3 mm), dilate is a lateral tooth on each side in the lower one-fifth, obtuse apically and 3 veined; spur (6-9 mm) cylindrical. Anther (l mm) obtuse, cauda l mm long, viscidiums white, small and oval (0.2 mm), staminodes slightly projecting (0.4 mm), thick and spatulate. Rostellum arms 1.3 mm long, thick, horizontal, and then ascending with the median tongue obtuse, prior to anthesis ascending is front, and then joined to the connective appendage of the anther. Stigma thick and truncate apically, free in the upper half and longer than the arms of the rostellum. Pedicel glabrous, 10-15 mm long. Capsule oblong-cylindrical (12 x 2.5 mm), 6 keeled apically.
Habitat:
On rocks is humid shady areas on stream and over banks, from 500-1500 m alt.; very common
Phenology:
Flowering in August- November:
Cultivation:
As given for the genus.
Distribution:
Réunion, Madagascar
References:
Orchids of Madagascar Hermans, Du Puy, Cribb & Bosser 2007; Historie Particulier des Plantes Orchidees Recueilles Sur Trois Iles Australes d'Afrique Thouars 1822 ; 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.
Images:
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Photograph ©Frederic Henze. Image used with kind permission.	Photograph ©Frederic Henze. Image used with kind permission.	Photograph ©Frederic Henze. Image used with kind permission.	Photograph ©Frederic Henze. Image used with kind permission.	Photograph ©Frederic Henze. Image used with kind permission.	Photograph ©Frederic Henze. Image used with kind permission.	Photograph ©Frederic Henze. Image used with kind permission.