specimen was sent to Reichenbach by Day, and it is mounted on the 
type sheet. Oncidium andigenum is the smallest flowered in the group 
and has a five-parted callus. 
Oncidium sanguinolentum (Lindl. ) Schltr. in Fedde 
Rep. Beih. 6: 98, 1919. 
Basionym: Leochilus sanguinolentus Wind. in Bot. 
Reg. 80: Misc. p. 91, 1844. 
Syn.: Oneidium cucullatum var. sanguinolentum 
(Lindl.) Lindl., Folia Orch. Oncidium 22, 1855. 
Oncidium olivaceum var. sanguinolentum (Lindl. ) San- 
der, Orch. Guide 188, 1901. 
Type: Colombia, La Guayra. Coll. Barkers.n./ (KX-L). 
Observation: The type specimen consists of two separately mounted 
flowers and a colored drawing apparently prepared froma living flower 
by Lindley. The flowers are rather small: dorsal sepal 11 mm. long, 
5 mm. wide; lateral sepals 13 mm. long, 5.5 mm. wide; petals 11 
mm. long, 6 mm. wide; lip 15 mm. long, 10 mm. across base, 14 
mm. across the bilobed terminal part. 
The reduction of this species by Lindley to O. cucul/atum is difficult 
to understand because of the distinctions in growth habit and the 
differently constructed callus. Oncidium sanguinolentum flowers from an 
undeveloped new growth and has a 5-parted callus: while O. cucul- 
latum flowers from mature pseudobulbs and has a nose-like, keeled 
callus. 
Illustrations: Dunsterville and Garay, Venezuelan Orchids Illustr. 
5: 220, 1972, only Fig. B, as O. andigenum. Foldats in Lasser, Flora 
Venez. Orch. 15 (5): 360, 1970, as O. nubigenum: Bertha Ospina, 
Orquideas de la Clarita, 75, 1972, as O. cucullatum. 
Oncidium mimeticum Stacy, sp. nov. 
Type: Columbia, Depto. Norte de Santander, Ocana. 
Coll. Schlim no. 411! (IKK-L). 
Epiphytica, caespitosa, variabili; radicibus flexuosis, 
glabris; pseudobulbis approximatis, ovoideis vel pyri- 
formibus, vulgo unifoliatis, cataphyllis obtectis; foliis 
anguste oblongo-ellipticis vel lanceolato-oblongis, obtu- 
sis, basi conduplicatis, quam inflorescentiis vulgo brevior- 
ibus; inflorescentiis elongatis, prominenter pedunculatis, 
Led 
