13 



It is not improbable that, besides these, Maxillaria 

 tetragona, and a few others, may require to be further 

 separated. 



Having thus explained my notions of the manner in which 

 Maxillaria and the genera allied to it may be best systema- 

 tised, I proceed to add very brief characters of the new genera 

 and their species. 



Promen;ea. Sepala'patula. Labellum trilobum, medio cris- 

 tatum v. multo-tuberculatum. Columna brevis, semiteres. 

 Glandula ovata. Pollinia 4, geminata, sessilia. 



1. P. stapelioides (Maxill. stapelioides, L. 146. B. B. 1839. t. 17.); pseudo- 



bulbisovatis tetragonis 1-2-phyllis, foliis tenuibus lanceolatis patentibus 

 pallide glaucis reticulatis, pedunculo diffuso bifloro, sepalis petahsque 

 subrotundo-ovatis acutis patulis subsequalibus, labello oblongo trilobo : 

 laciniis lateralibus erectis linearibus obliquis obtusis intermedia ovato- 

 oblonga basi cucullata, crista transversa flexuosa carnosa intus dente 



carnoso ovato aucta. Brazil.— Flowers green externally, yellowish 



internally, speckled and banded with purple. 



2. P. xanthina (Maxill. xanthina, LindL Bot. Beg. 1839. sub t. 1/.); pseu- 



dobulbis ovalibus tetragonis 1-2-phyllis, foliis anguste lanceolatis, pe ; 

 dunculis ascendentibus unifloris pediceUo sterili terminate, bractea ovata 

 mucronata cucullata, sepalis petahsque oblongis acutis patuhs subsequa- 

 libus, labello oblongo trilobo laciniis lateralibus erectis linearibus obtu- 

 sissimis integris intermedia bilabiata: labio supenore carnoso abbreviate 

 truncato 5-dentato inferiore oblongo &cuto. -Brazil.- Flowers yellow 



3. P. lentiginosa (Maxill. lentiginosa, Lindl. in Bot Beg. 1839 mac. 93.) ; 



bracteis late ovatis acuminatis, labeUi lobo medio ovato-oblongo obtuso, 

 crista transversa medio processu quadrato tndentato aucta, anthene 



apice incurvo ; alioquin M. stapelioidi simihs.— —Brazil. " Ve, 7j ke 



P. stapelioides; but the sepals are more acute, the purple spots redder, 

 more distinct, and less run into bars; the lip is of the same colour 

 as the petals, and its transverse crest has a square three-toothed process 



4. F m RoUiZiii (Maxill. Rollissonii, W^;J^iy-<fljjM£ffi 



pseudobulbis subrotundis compressis bifolus, foliis lanceolatis apcere- 

 curvis, scapis subunifloris diffusis laxe ^^^.^^^J^~ 

 libus basi subeequalibus petahsque acutissimis, labelh lobis lateralibus 

 ovatis angustis acutis intermedio oblongo membranaceo apiculato mar- 

 gine deflelo ; callo disci elevato carnoso antice transverso lobos lat nde 

 kbelliconjungente medio producto ^truncate .tndentato ^d«ti«d«.« 

 flexis postice fornicato truncato bilobo. Brazil. Flowers pale yel 



5.P^^ 



nullis, fohisgramineisrecurvis, penanthio J^P"^,^^; ^ 

 obtusis laterSbus paululum connate ^ "fg^S^S 

 pede longe producto coluninae artic ^ to J^J^j, tuberculo disci 

 ovatis acutis ^^ b « "*f^ ^l^y ^Brazil, in thepror. 

 magno carnoso truncato postice bilobo. ~ZJ f A „ n ' nrn i P 

 ofBahia. Flowers pale yellow, banded with dull purple. 



