PO 
35 
41. DENDROBIUM Heyneanum. Gen. & Sp. Orch. p. 90. 
This very pretty species has flowered imperfectly with 
Messrs. Loddiges, who received it from Bombay by the over- 
land conveyance. Its exact locality was not before known, 
the specimens in Heyne’s herbarium, where I found the ' 
species, affording no information upon that point. In a 
healthy state the plant forms a tuft of slender clavate stems, 
from four to six inches high, loosely covered with the 
withered sheaths of leaves that have fallen off. From all 
sides there appear in the flowering season slender spreading 
racemes about three inches long, having each from five to 
nine smallish white flowers, with a greenish-yellow lip beau- 
tifully streaked with violet; they have no smell. 
42. LALIA majalis. Lindl. mss. (Cattleya Grahami. Gen. & Sp. 
Orch. 116.) 
This plant, the Flor de Mayo of the natives of San 
Bartolo, and the adjoining parts of Mexico, has lately been 
received by the Horticultural Society of London from Mr. 
Hartweg, who found it on the mountains near Leon, growing 
upon oak trees, at the height of 8000 feet, where it some- 
times freezes. I possess specimens (No. 3.) given me by 
Prof. Schlechtendahl, gathered by Dr. Schiede in the same 
Situations. It is one of the most beautiful of the whole order ; 
a dried flower now before me, of a bright violet colour, mea- 
sures nearly five inches from the tip of one petal to that of 
another, and when fresh I have no doubt the expansion of 
the flower was as much as six inches. The labellum is still 
nearly two inches and a half long. AT plants of this mag- 
nificent species have been given away by the Horticultural 
Society ; but it proves exceedingly difficult of cultivation. 
43. OCTOMERIA fidintata; folio ovali-lanceolato crassissimo acuto, floribus 
fasciculatis, labello oblongo basi angustato apice tridentato auriculá utrinque _ 
rotundatá inflexá : lamellis obsoletis. 
A Demerara plant of no beauty. The flowers are bright 
yellow ; the leaves are remarkably thick and hard. 
44. POLYSTÁCHYÁ affinis. Gen. et Sp. Orch. p. 73. 
This has lately flowered with Messrs. Loddiges, who im- 
ported it from Sierra Leone. It proves extremely different 
from P. puberula, of which I once thought it might be a 
E. May, 1839. y 
