54 
** Xanthochilum.—Stained lip. 
a. Columnæ auriculis rotundatis latioribus quam longis vel 
nullis. 
*,* In this arrangement the species with a 3 lobed lip 
come first, and then those which have an entire lip are 
stationed in the following order, viz. first, such as have 
obtuse sepals and petals, then such as have them acute, and 
last come the species with very much acuminated sepals and 
petals. 
18. O. grande (Lindl. in Bot. Reg. 1840. misc. no. 97. 
Bateman Orch. Mex. Guat. t. 46); sepalis lanceolatis 
lateralibus convexis falcatis petalisque oblongis obtusi- 
usculis latioribus subundulatis, labello subrotundo basi 
auriculato sepalis plus dupld breviore : tuberculis basi 
tribus corrugatis aliisque lateralibus dentiformibus mi- 
noribus, columnæ tomentosæ marginibus rotundatis con- 
vexis incurvis. —— Guatemala. —— This is a very 
extraordinary plant. Its habit is that of Odontoglos- 
sum, with which its unguiculate lip and peculiar column 
also correspond ; but the tubercles at the base of the lip 
are those of Oncidium. The dried flowers measure six 
inches and a half from the tip of the petals, and the 
fresh ones are even larger. They are yellow, almost 
covered with cinnamon-brown bands and blotches. Two 
to five flowers grow together on a scape, which is seldom 
more than five or six inches long. | 
19. O. Warneri; pseudobulbis ovatis ancipitibus subangulatis 
apice elongatis diphyllis, foliis patulis lineari-lanceolatis 
racemo paucifloro brevioribus, bracteis minimis, sepalis 
ovalibus patentissimis, petalis paulo angustioribus ob- 
tusis ascendentibus, labelli trilobi plani laciniá inter- 
medià cuneatä bilobä lateralibus quadratis, tuberculo 
disci simplici, columnä elongata aptera.——This little 
plant would be a very good Oncidium if it had any wings 
to the column ; it however approaches more nearly some 
of the Columbian species of Odontoglossum, with which 
it will naturally associate. Its raceme is about a foot 
high, and bears seven or eight distant flowers of a rich 
yellow, streaked with dull crimson along the middle of 
the sepals and petals. The pseudobulbs, which are 
nearly two inches long, are a pale sea-green colour. 
