702 ORCHIDES. 



ONCIDIDM. 



carina media erecia aciila, 2 laterales pronae aiinatae denliculis 



2 a fronle verrucisque pliiribus uirinque ; alae rciusae ... 17. oripjale. 

 carinae paucae erectae aculae verrucis paucis sinuosis uirinque; 



alae triangulares 18. teneme. 



Labellum panduratura 



inlegrum, columna aplera 19. corynephorum. 



reiusuin, laciniis lalernlibus parvis triangularibus ; columna basi 



ulrinque auriculata 20, loxense. 



Labellum rotundum aui equilateri-triangulare convexura 



(Cimicifera.) 



oblaium irilobum 21. nxicrochilum. 



circulare. 



sepalis Interalibus linfaribus elongatis 22. cimiciferum. 



sepalis omnibus ovatis 23. cocciferum. 



triangulare. 



alis col. obsoletis 24. trnlla. 



alis col. acuminaiis 25. examinans. 



A. Auriculata. 



All ihe species of ihis aection have very large flowers, the prevailing lini of which 

 is cinnamon-brown wiih or without a mixture of yellow. Their panicles are usually 

 straggling or iwining , sometimes reaching lo a great length. Scarcely any are ia 

 cuitivation, though most of them have been sent home by either Warscewicz , or 

 Harlweg, or Mr. Linden's coUectors. The tough leaihery lip is an essenlial cha- 

 racteristic. 



1. ONCIDIUM MACKANTHU.M L. 0. 205. L. F. 1. c. Nr. 1. p. 4: 



A magniflcent species, with a climbing panicle. Flowers three ioches in diaroeter. 

 Sepals purplish brown, peials yeiiow. Lip purple , with a white crest, consisting of 

 a ceiitral keel, wiih two acute reversed leelh on eilher side. 



Wild in Central-Amerika, comraon ; Guayaquil hb. Lambert ; Peru — Malthews, 

 1919 ; at the fooi of Tunguragua , 11,000 ft. above tlie sea — Harlweg ; desceol from 

 Alausi to Jaquacbi, ai 7000 ft. — Jaraieson, in hb. Hooker. 



Lindl. in l'axt. Fl. Gard. III. 126: 

 Pseudobulbis ovalis. foliis oblongis oblusis, racemo volubili", sepalis 

 cordalis oblongis obtusis undulalis unguiculalis, pelalis aequalibus con- 

 formibus paulo latioribus el brevius uDguiculatis , labelli hastali laciniis 

 laleralibus subfalcalis intermediae acuminatae aequalibus, crista 3 lamel- 

 lata, lamellis apice confluenlibus ulrinque dentibus iruncatis, columnae 

 aiis rotundalis. Guayaquil. 



Flowers 3—4 inches across. Sepals purplish brown, tipped wilh yellow. Petals 

 bright yellow. Lip purple, wiih a white crest. 



2. ONCIDIUM CORDATUM L. F. 1. c. sub N. 2. L. Sert. 1. c. p. 4 : 

 Pseudobulbis — , foliis oblongo lanceolatis acutis coriaceis basi an- 



gustalis, scapo paniculato ramosissimo, bracteis oblongis cucullalis mem- 

 branaceis oblusis', sepalis unguiculatis ovatis undulalis, pelalis unguicu- 

 Jatis cordatis margine crispis d«mliculatis, labelli hastati unguiculati 

 lobis anguslis acuminatis appendicibus disci pelaloideis, columna sub- 

 aptera. 



