Synonym: Caularthron umbellatum Raf., Fl. Tellur. 2: 41, 

 1837. 



Type: Cultivated in Glasgow Botanical Garden. No preserved 

 specimen known to exist today. 



Plants epiphytic, erect, up to 30 cm. tall; roots fleshy, flexuous, glabrous; 

 stems approximate, from a bulbous base suberect, slightly flexuous, leafy 

 above; leaves alternate, linear-oblong, obtuse at the obliquely bilobed apex, up 

 to 7 cm. long, 1 cm. wide; inflorescences fasciculate, very short, few-flowered; 

 bracts ovate-cucullate, very much shorter than the subtending pedicels; flowers 

 rose-colored, showy with spreading segments; dorsal sepal ovate-lanceolate, 

 acuminate, up to 14 mm. long, 4 mm. wide; lateral sepals obliquely ovate- 

 lanceolate, acuminate, up to 15 mm. long, 5 mm. wide; lip from a cuneate base, 

 trapeziform-elliptic in living condition, obtuse to rounded in front, widest near 

 middle; in dry condition from a cuneate base, obtrapeziform, 3-lobed, lateral 

 lobes rounded, terminal lobe transversely quadrate-oblong, subtruncate in 

 front; disc at base with a few transverse lamellae, whole lip up to 15 mm. long, 

 10 mm. wide; column short, terminated by 2, rounded, apiculate ears, up to 4 

 mm. long; pedicellate ovary cylindrical, arcuate, up to 2.5 cm. long. 



Distribution: Native country unknown; originally reported 

 from Jamaica, but the species is not known on any of the West 

 Indian islands. 



Field check: Lip rhombic to obtrapeziform in outline, i.e., 

 wider near the base than near the apex. Petals obovate- 

 oblanceolate. 



Observation: Since the type specimen cannot be located, the 

 description is drawn from the original publication and plate in 

 the Botanical Magazine as well as a drawing of the whole flower 

 (reproduced here) in the Reichenbach Herbarium. This latter 

 drawing had been prepared by Reichenbach from the type. 



Dimerandra tenuicaulis Rchb.f.) Siegerist, comb. nov. et stat. 

 nov. 



Basionym: Epidendrum stenopetalum var. tenuicaule Rchb.f. 

 inOtiaBot. Hamb. 1: 12, 1878. 



Type: Ecuador. Prov. Guayas; Sabanella near Guayaquil. 

 Lehmann 82 (W!). 



Epiphytic, erect or ascending plants, up to 40 cm. tall; roots fleshy, some- 

 what flexuous, glabrous. Stems slightly flexuous, sulcate, the upper two-thirds 

 laxly leaved; leaves distichous, linear-lanceolate, somewhat unequally rounded 

 at bilobed apex, basally articulate with tightly appressed leaf-sheaths, up to 

 8-12 cm. long, 5-7 mm. wide; inflorescence terminal, 1-3, very short, rarely 



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