Tas. 6001, 
MESOSPINIDIUM VULCANICUM. 
Native of Hastern Peru. 
Nat. Ord. Orcu1pEm.—Tribe EripenDREz. 
« Genus Mesosprnipium, Fchb. f.; (Walp. Ann., vol. vi. t. 856). 
Mrsosprntpium vulcanicum ; pseudobulbo ovoideo v. obpyriforme compresso 
ancipiti marginibus subacutis, foliis radicalibus petiolis late vaginantibus, 
lamina parva v. evoluta oblonga, caulinis ad apicem pseudo-bulbi 
geminis, late ligulatis carinatis subacutis, pedunculo gracili elongato, 
bracteis parvis sparsis vaginantibus acutis, floralibus pedicellis gracili- 
bus roseis multo brevioribus, racemo inclinato, multi-laxifloro, flori- 
bus roseis, sepalis petalisque consimilibus oblongo-lanceolatis acumi- 
natis, mento brevissimo, labelli 3-lobi ungue et disci bast column 
adnatis, lobis lateralibus obtusis.decurvis erosis, intermedio deflexo 
breviter late unguiculato subrotundato, marginibus decurvis subcre- 
natis, disco callo 4-carinato, carinis puberulis 2 intermediis longioribus, — 
columna apice dentata. 
Mesosprnipium vulcanicum, Rchd. f. in Gard. Chron. 1872, p. 393. 
A charming little Orchid, with the habit and appearance 
of an Epidendrum, but with very different pollen-structure. 
It appears to be undoubtedly the same with a plant in the 
Hookerian Herbarium, discovered by Mr. Spruce in the vol- 
canic mountains of the Tunguragua district of the Upper 
Amazons, where it was flowering in April, 1860; and which 
Was named I. vulcanicum by Dr. Reichenbach himself. That 
learned author’s description in the Gardeners’ Chronicle, quoted 
above, is probably drawn up from imperfect or faded specimens, — 
as the flowers are described as purplish, whereas they are in our 
specimen of a vivid rose-red, as described by Spruce— Flores 
Speciosi, rubri roseive,”—as also in the shape of the mid-lobe | 
of the lip, which is not linear and 3.toothed, but rounded, 
2-lobed, and broadly clawed. IJ am indebted to Messrs. 
NOVEMBER lst, 1872. 
