Refugium Botanicum. | (June, 1869. 
TAB. 75. 
Tribe VANDE. 
Genus ONCIDIUM. 
O. cartnatumM, Knw. and Westc. Fl. Cab. ii. 1838, p. 81! Pseudo- 
bulbis ovatis compressis basi vulgo quadrifoliatis, foliis geminis 
superioribus laminigeris, geminis inferioribus vaginis triangulis, 
folio in pseudobulbo solitario cuneato-ligulato acuto, pedunculo axil- 
lari gracili longe exserto racemoso seu paniculato, seepe viviparo, 
ramulis brachycladis, vaginis distantibus in parte anantha, bracteis 
triangulis, ovaria pedicellata longe non equantibus, sepalis ligulatis 
acutis lateralibus bene latioribus, tepalis oblongis acutis seu trian- 
gulis, labello oblongo ligulato retuso bilobo emarginato, callis ele- 
vatis quadriseriatis, externis ternis, internis geminis seriatis, anticis 
internis vulgo maximis, insula velutina parva inter callos internos 
utrinque una interposita, columna trigona aptera, tabula infrastig- 
matica utrinque supra basin in cornu porrectum extensa, anthera 
rostrata.—Leochilus carinatus, Lindl. Bot. Reg. 1842, Misc. 22! 
Oncidium carinatum, Knw. and Westc.; Rehb. f. in Walp. Ann. vi. 
1723 
This is a well-known Mexican plant, yet it is very seldom seen 
in collections of specimens. We have never seen any wild speci- 
mens except our own, from Zacuapan in Mexico, gathered by 
Leibold, unless a very imperfect one collected by Liebmann, at 
Tealtengo near Vera Cruz, preserved in the Museum of Copen- 
hagen, be the same. 
Aérial roots filiform, very thin. Pseudobulbs ovoid, ancipitous, 
with four sheaths underneath, two of which are triangular, the 
two superior articulated with oblong-ligulate acute blades. The 
single leaf on the pseudobulb is of the same shape as the highest 
of the infrabulbous leaves, generally greater, often of a very pale 
yellowish green, as the pseudobulb is usually. Peduncles long, 
even very long, terete, racemose or with short lateral branches, 
hence paniculated ; we have observed it twisted, and also some- 
times viviparous. Sepals ligulate-triangular, the lateral ones 
broader, all ight copper-coloured. Tepals ovate-acute or quite 
triangular, with a deep copper-coloured limb, and some copper- 
coloured dots and streaks on a yellow disk. Lp oblong-ligulate, 
retuse, often emarginate, yellow; the crests white, with crimson 
