VANDER. 197 
A. Labellum 3-lobum. (Evoncipium.) 
§. 1. Folia plana, v. complicata. 
a. Sepala lateralia connata. 
* Labelli laciniz laterales nane, v. obliterate. 
1, Oncip1um crispum. Lodd. Bot. Cab. 1854. 
O. pseudobulbis oblongis sulcatis rugosis diphyllis, foliis lanceolatis cori- 
aceis acutis, scapo simplici multifloro, sepalis recurvis undulatis obtusis 
lateralibus semiconnatis, petalis dupló majoribus oblongis undulatis un- 
guiculatis, labelli lobis lateralibus cornuformibus recurvis nanis inter- 
medio maximo unguiculato subrotundo-cordato undulato, cristà duplici 
serie deltoideà dentatà, columns alis rotundatis denticulatis carnosis. 
Hab. in Brazilia in montibus Organ supra arbores mortuos. (v. ic. pict. in 
herb. Hooker.) . 
Folia 6.7-poll. basi purpureo maculata. Scapus ascendens simplex, 50- 
60-florus. Flores aurantiaci luteo limbati, diametro 3-pollicari. 
2. Onciptum nubigenum. Lindl. in Hooker Bot. Misc. ined. 
O. pseudobulbis 1-2-phyllis, foliis lanceolatis acutis, scapo simplici pauci- 
floro (3-10), sepalis lateralibus rectis semiconnatis petalisque oblongis 
acutis undulatis, labelli lobis lateralibus nullis intermedio subrotundo 
subsexlobo, cristà trituberculatà compressà, columnz alis rotundatis 
carnosis. 
Hab. in Andium Peruvianorum jugo Assuay supra truncos arborum putres- 
centes, alt. 14,000 ped. rard infra, florens Augusto, Jamieson. (exam. s. 
sp. in herb. Hooker.) 
Folia 24 poll. Scapus spithameus. Flores magnitudine O. bifolii pallide 
purpurei, 
3. Oncrprum viperinum. Lindl. l. c. 
O. foliis lineari-lanceolatis acutis planis, scapo simplici cernuo flexuoso 
racemoso denso multifloro, sepalis lateralibus basi connatis divaricatis 
petalisque latioribus lanceolatis undulatis recurvis acutis, labelli lobis 
lateralibus obsoletis denticulatis semisagittatis intermedio subrotundo-re- 
niformi plano subbilobo, cristà medio tuberculat basi et apice bicorni, 
columne alis parvis rotundatis. 
Hab. Supra truncos arborum emortuos solo pingui in Uruguay. (exam. s. 
sp. in herb. Hooker.) 
This closel y resembles O. bifolium, differing chiefly in the acute, spreading 
9r recurved petals, in the lower sepals being united only at the base, in 
the form of the tubercles of the crest, and in the flowers being more 
closely arranged. The crest when seen in profile resembles strikingly a 
cluster of young vipers' heads. 
4. Oxciprvw bifolium. Sims in Bot. Mag. t. 1491. 
O. pseudobulbis oblongis diphyllis, foliis lanceolatis patentibus planis, 
Scapo simplici cernuo racemoso laxo multifloro, sepalis (quorum latera- 
la semiconnata) petalisque obtusis concavis undulatis, labelli lobis late- 
ralibus nanis obtusis recurvis intermedio maximo subunguiculato reni- 
formi plano bilobo repando, cristà medio interrupt? callosà utrinque tu- 
erculis linearibus patentibus munitá, columnz alis rotundatis integris. 
O. bifolium. Loddiges Bot. Cab. t. 1845. 
Hab, in Monte-Video, 
