41 
44, HEXADESMIA bicornis. 
H. bicornis ; caulibus fusiformibus elongatis, foliis linearibus obliqué biden- 
tatis, floribus subsolitariis cernuis, labello ovato retuso subserrato, 
columná utrinque bicorni. 
An addition to the insignificant genus Hexadesmia, sent 
to Mr. Loddiges from Columbia by Linden. It is very like 
H. fasciculata, but differs in the leaves and column. 
45. DENDROBIUM criniferum. 
D. criniferum ; caulibus teretibus erectis ramosis, foliis oblongis subundulatis 
emarginatis, floribus axillaribus lateralibusque solitariis cernuis, sepalis 
ovatis, petalis linearibus acuminatis, labelli trilobi crenulati lobis latera- 
libus nanis intermedio apice in filis intricatis multifido lamellis binis 
undulatis. 
An orchidaceous plant with small yellowish flowers of 
little beauty, introduced by His Grace the Duke of Nor- 
thumberland, who received it from Mr. Power in Ceylon. 1t 
is closely allied to D. Scopa, but is readily distinguished by its 
slender stems, wavy leaves, and the shortness of the lateral 
lobes of the labellum. The breaking up the point of the lip 
into numerous threads is remarkable, and resembles what 
occurs in the bearded Bolbophylla, which are no doubt the 
Desmotricha of Blume. 
46. COLLETIA serratifolia. 
Vent. Choix. t. 15. DeCand. Prod. 2. 28. 
'l'his is a half hardy Peruvian shrub, with oblong serrated 
deciduous deep green leaves, and small, short-stalked, axillary 
white flowers. It is a plant of little interest, except as indi- 
cating how very different are the species of Colletia from 
each other in habit. 
47. LYCASTE aromatica ; var. retusa. 
L. aromatica (Supra 1843. misc. p. 16.; var. retusa; floribus vitellinis, 
labelli lobo medio dilatato retuso.) 
We have received a flower of this from Geo. Barker, Esq. 
of Birmingham, who obtained it from Lima. It differs from 
L. aromatica in having very clear yolk-of-egg-yellow flowers, 
without a tinge of green, and the middle lobe of the lip 
dilated and almost 2-lobed. 
