Refugium Botanicum. | June, 1869. 
HAPS FY ie 
Tribe VANDE. 
Genus T'RicHocENtTRUM, Popp. and Endl. 
T. cornvoopi£, Linden and Rechb. f. in Gardener's Chronicle, 1866, p. 
266 ¢. Foliis planis a basi petiolari cuneato oblongis acutis, apice 
summo tridentatis, pedunculis basilaribus racemosis unifloris, 
sepalis tepalisque sublatioribus cuneato-oblongis apiculatis, sepalo 
summo fornicato, labello pandurato retuso emarginato, disco crasso 
velutino carini sabbreviatis angulatis senis triseriatis in basi, caleari 
gracili flexo ovarium cylindraceum non equante, columne brevis 
alis dolabriformibus lobatis serratis. 
A very few specimens of this new species were sent by Mr. 
Wallis to Director Linden from Rio Negro (?). We have only seen 
the plant in the collection of Director Linden and W. W. Saun- 
ders, Esq. It is allied to 7. purpureum, Lindl, but that is 
different, at first sight, by the very ample wide spur, two erect 
teeth at the base of the lip, and narrow wings, not to speak of 
the colour. 
Rhizome short, very stout. Pseudobulbs nearly obsolete, very 
short, from a single joint, terete, unisulcate, one-leaved. Leaf 
oblong-acute, from a cuneate base, with three minute teeth at the 
end, from three to five inches long, sometimes more than one 
inch wide, the middle keel of the under side rounded, green, 
fleshy. Peduncles basilar, with one-flowered racemes. Bract tri- 
angular, acute, herbaceous, much shorter than the stalked ovary. 
A rudiment of the axis crowned by one or two abortive bracts. 
Sepals cuneate-oblong, apiculate, the superior one fornicate, yel- 
lowish white. TJepals broader, blunter, the same colour as the 
sepals. Lip connate at its base with the column, broadly cuneate, 
oblong-pandurate, wavy on its sides, emarginate at its free end, 
sometimes minutely toothed. Disk thickened towards the base, 
and bearing six triangular short calli, standing in three rows or 
only in two rows, the four intermediate ones standing close to 
each other. Both the surface of the lip and the calli are velvety, 
which becomes more conspicuous in the dried flowers. The lip is 
white, with a sulphur-coloured disk. The keels are reddish 
orange, with bright yellow radiating lines. The short column has 
