Refugium Botanicum. | [ October, 1872. 
TAB. 99. 
Tribe VANDEA:. 
Genus Oponroaiossum, H. B. Kk. 
O. nINGENS, Fichb. f. Pseudobulbo oblongo ancipiti diphyllo, foliis ligu- 
latis acutis pergameneis, panicula fractiflexa multiflora, sepalis 
oblongo-lgulatis acutis, lateralibus labello suppositis, tepalis 
oblongis acutis limbo valde crispatis, labello pandurato antice 
latiore crispo acuto, callo obselleformi a basi in discum, 
utrinque basi semiovato serrulato, antice tridentato, carinula 
antice interposita, columna clavata, alis prope obsoletis pone 
limbum fovex productis, dentibus oblongis geminis sub fovea. 
This species appears to have been found only by Pearce in 
Peru. I have obtained it from the nursery of Messrs. Veitch. 
I was, however, not so fortunate as our artist, who saw the flowers 
of the most beautiful yellow. My flowers were pallid or sulphur- 
coloured, with brown blotches on the tepals, small short brown 
blotches on the sepals (not observed by Mr. Fitch), and some 
violet streaks at the base of the lip. It is very interesting that 
the position of the parts of the flower reminds one of Oncidiwm 
phymatochilum or ochmatochilum. The flowers are as large as 
those of a good variety of Odontoglosswm leve. ‘The tepals, how- 
ever, are very crisp at their border. 
Pseudobulbs oblong, ancipitous, two-leaved. Leaves ligulate, 
acute, parchment-like. Panicle zigzag, many-flowered. Sepals 
oblong-ligulate, acute, the lateral ones bent under the lip and 
usually refiexed at their tips. Jepals oblong-acute, very wavy in 
their limb. Jip pandurate, broader towards the reflexed acute 
tip, with a saddle-like callosity from the base to the disk anda 
serrate border towards the base, and two to three teeth in the 
anterior part and a small keel between the two. Colum clavate, 
with nearly obsolete scarcely perceptible wings near the borders 
of the stigmatic hollow, and two tooth-like blunt lobes beneath it. 
Materials :—A beautiful herbarium specimen sent in 1867 by 
Messrs. Veitch ; and sketches and description, both made from the 
living plant. 
