ORCHIDACEM 109 



AN ONCIDIUM NEW TO THE UNITED STATES 



Oncidium variegatum, Swartz, Fl. Ind. Occ. 3: 1483 (1806), 

 not Lindl. : " Epidendrum variegatum, Prodr. p. 122. — 

 Hellehorine foliis carnosis, carinatis et falcatis. Plum. Cat. 

 9. ic. 177. t. 182. 2.? — Viscum delphinii flore alho guttato 

 tninuSf radice fibrosa, Sloan, hist. 1. 251. t. 148. f. 2. — 

 Ophrys Guianensis, — Aubl. Guian. 816. ? ? 



" Radices numerosae, longae, repentes, albidse. Caulis nullus ; 

 sed Sarmentum subtus ad basin foliorum horizontaliter excurrens, 

 apice prolem radicantem seu novae plantae originem proferens. 

 Folia radicalia, distiche posita, basi vaginantia, lanceolata canali- 

 culata, compressa, recurvata, rigida, carnosa, in sulco atro-punc- 

 tata, extus glabra, marginibus et dorso carinato cartilagineo- 

 serratis. Vagmce carinatae, margine membranaceae, post casum 

 foliorum persistentes, oblique truncatse. Scapus (interdum plures) 

 e sinu Vaginarum, filiformis, strictus, nudus, fuscus, glaber, 

 squamis remotis, vaginantibus munitus, simpliciusculus 1. rarius 

 subdivisus, paniculatus : ramis flexuosis, multifloris. Flores sub- 

 sessiles 1. breviter pedicellati, majuseuli. Bractece minutae, ovato- 

 lanceolatae, membranaceae, ad basin florum. Petala quatuor, cru- 

 ciata : duo (inferius et superius) minora, basi attenuata, concava, 

 rubra ; altero apice emarginato ; duo lateralia paullulum majora, 

 spathulata, retusa, patentia, undulata, a basi ad medium sanguinea. 

 Ldbellum petalis multo majus, patens, disco prope columnam 

 oblongo, tuberculo cruciformi munito, margine trilobum : lobis 

 lateralibus parvis oblongis falcatis ; intermedio maximo, reniformi, 

 patente, piano, toto candido, basi sanguineo-maculato. Columna 

 minuta, erecta, alulis duabus falcatis conniventibus pallide san- 

 guineis superne cincta, lutea, apice excavata pro Anthera ovata, 

 biloculari, Corpusculis pollinis duobus ovatis, pedicellis propria 

 vaginula inclusis adfixis. Germen tereti-filiforme. Capsida elon- 

 gata, basi torta, sulcata." — Swartz, loc. cit. 



