Prev Taxon: Genus Dendrobium section Herpetophytum
Current Genus: Genus Dendrobium section Latouria
Next Taxon: Genus Dendrobium section Microphytanthe
Dendrobium cynthiae
Dendrobium cynthiae Schuit., OrchideenJ. 22 (2015) 126, fig.
Type: Cynthia Hill cult. s.n. (2014) (holo K; iso UC)
Synonyms:
Roots glabrous, 0.25 cm diam. Pseudobulbs close together, narrowly clavate, 9-23 by 0.7-1.3 cm, usually with 3 main internodes. Leaves apical on the pseudobulb, 2-4, close together, narrowly oblong, 4.9-9.5 by 1.6-2.8 cm, index 3.0-3.7; apex unequally bidentate; rigidly coriaceous. lnflorescence subterminal, suberect, c.13 cm long; peduncle c. 7 by 0.23 cm; peduncle scales 2, obliquely tubular, 0.7 cm long; rachis rather densely c. 5-8-flowered; floral bracts narrowly triangular, 0.6-1 by 0.3-0.4 cm, with acute apex. Pedicel and ovary curved, glabrous; pedicel obconical, c. 1.3 cm long; ovary almost with a right angle to the pedicel, c. 0.4 cm long. Flowers small, c. 2 cm diam. Median sepal narrowly ovate, 1.5 by 0.7 cm; apex obtuse, with a c. 0.03 cm long mucro, 5-nerved. Lateral sepals obliquely triangular-ovate, 1.65 by 0.7 cm; apex obtuse, mucronate; 5-nerved; mentum broadly conical, pointing backwards, 0.4 cm long, with rounded apex. Petals narrowly obovate-subspathulate, 1.5 by 0.5 cm; apex obtuse, mucronate; 3-nerved. Lip 3-lobed, when flattened 1.4 by 1.3 cm; hypochile c. 1.28 cm long, its lateral lobes obliquely obovate, broadly rounded, with slightly raised nerves, median with 3 parallel, smooth, glabrous ribs raising gradually to form low rounded lamellae towards the apex , all terminating well below the midlobe, the median rib in the basal half grooved, 0.75 cm long, lateral ribs 0.85 cm long; epichile in natural position folded lengthwise, concave, when flattened transversely oblong, 0.55 by 0.25 cm, with an additional convex fold between the midlobe and each of the lateral lobes, its apex truncate, mucronate. Column short, 0.25 cm long; stigma large, 0.18 cm long; column-foot straight, flat, 0.5 cm long. Anther about rectangular in outline, 0.2 cm wide; pollinia narrowly oblong, 0.13 cm long. Fruit not seen.
(after Schuiteman 2015)
Roots white with green tips. Pseudobulbs glossy red-brown. Pedicel white, ovary greenish white. Sepals and petals white. Lip yellowish green, deeper green to-wards the apex; callus olive green. Column white; column-foot green, anther white tinged green; pollinia deep yellow.
Not known
Not known, probably New Guinea
Not known
Probably intermediate to cold growing terrestrial
Not known
- Family Orchidaceae
- Subfamily Epidendroideae
- Tribe Dendrobieae
- Subtribe Dendrobiinae
- Genus Dendrobium
- Section Latouria
- Species Dendrobium cynthiae
Dendrobium cynthiae Schuit. is similar to D. eymanum Ormerod, but differs in the clavate pseudobulbs with 3 large internodes (versus pseudobulbs of uniform thickness, with 5 or more large internodes). the callus ridges on the hypochile not reaching the base of the midlobe (versus callus ridges extending to the base of the midlobe), the flattened midlobe of the lip is much wider than long (versus midlobe longer than wide), and mentum 0.4 cm long (versus mentum 0.75-0.8 cm long).
(after Schuiteman 2015)
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Dendrobium cynthiae
Dendrobium cynthiae Schuit., drawing Judi Stone in OrchideenJournal. 22 (2015) 126, fig.