612 
MACRADENIA lutescens. 
Trinidad Macradenia. 
— — 
„ GYNANDRIA MONANDRIA. 
Nat. ord. ORCHIDEÆ. Jussieu gen. 61. Brown prod. 1. 309. Div. IV. 
Anthera terminalis mobilis decidua. Masse pollinis demüm cereaceæ, Brown 
in Hort. Kew. ed. 2. 5. 205. 
MACRADENIA.  Labellum sessile cucullato-concavum indivisum acu- 
minatum. Corolle petala distincta patula. Columna libera, lobis apicis 
conniventibus. Masse pollinis duæ, exsulez. Brown MSS. 
Macradenia lutescens. Brown MSS. 
Cor. sordidé lutea, intüs purpureo-fusco-marmorata. Labellum corollä 
brevius, ecalcaratum, album, intus.purpureo interrupte lineatum, obovatum, 
appendice lineari acuto reflexo. Columna longitudine fer? labelli, semiteres, 
suprà sensim latior lobis lateralibus apicis in cucullum antheram amplexantem 
conniventibus. Anthera é basi paulo gibbosiore intüsque biloculari producta 
in acumen lato-lineare concavum ipsá basi aliquoties longius processum subu- 
latum stigmatis, glandulam, ejusque appendicem involvens. Mass pollinis 
cuneiformes modice compresse, post migrationem apicibus suis acutis affixe 
disco apicis dilatati appendicis elongati proscolli. Brown MSS. 
An unobserved species, now first introduced by Mr. 
Griffin, who received the plant, represented in the annexed 
plate, from Trinidad. It flowered last December in the 
hothouse at South Lambeth, and was communicated to Mr. 
Brown, who has made it the foundation of the present ge- 
nus, to be placed next to Oncipium, from which it differs 
by a convolutely concave undivided taper-pointed label, a 
corolla with the petals all distinct, a column with the two 
top-lobes converging convolutely (not extended), and by 
two furrowless or unindented pollen-masses (furrowed or 
indented in Oncıpıum). 
A humble plant (about four or five inches high), with 
two or three upright lanceolate leaves rather longer than 
the 5-flowered stem. Flowers scentless, about an inch in 
diameter, subbilabiately stellate. Bulb green, oblong, ovate, 
above ground. So far we have taken from the drawing, 
having had no opportunity of seeing the plant; what fol- 
lows is from the Latin of Mr. Brown. Corolla dingy yel- 
low, marbled on the inside with brownish purple; petals 
distinct, spreading: /abel sessile, shorter than the petals, 
