Refugium Botanicum.] [ October, 1872. 
TAB. 116. 
Tribe MALAXIDE®. 
Genus Butsorpnyiuum, P. Th. 
B. Logpsn, Lindl. 3B. Srtamensz, Rehb. f. Rhizomate valido, 
pseudobulbis pyriformibus, junioribus bene vaginatis, sub- 
distantibus monophyllis, folio cuneato oblongo acuto, racemis 
infrabulbis unifloris, pedunculis brevissimis subnullis, ovariis 
pedicellatis elongatis, sepalo summo ligulato acuto seu 
acuminato, sepalis lateralibus subequalibus falcatis, tepalis 
basi superiori semicordatis lanceolatis acuminatis (in icone 
acutis) rectis, labello bene unguiculato, basi cordato-hastato, 
oblongo acuto utrinque medio plica insiliente, columna apice 
subtriloba, anthera velutina. Sepala, tepala, labellum extus 
straminea. 
B. Sramense, Rehbd. fil., Gardener's Chronicle, 1867, p. 592! Sepala 
et tepala brunneo-purpureo-lineata. Labellum intus album, 
ima basi flavum, lineis longitudinalibus ac punctorum serie- 
bus purpureis. Unguis labelli inferne (extus) striolis pur- 
pureis. Columna interne flava, basi purpureo aspersa. 
Artifex labellum utrinque sulphureum estriatum observavit, 
in icone analytica tamen punctostriatum ostendit. 
My first knowledge of this species is due to J. Day, Esq., who 
imported it from Siam. It appeared also at the Royal Kew 
Gardens, February, 1868, from Colonel Benson, probably from 
Moulmein. We flowered several specimens at the Hamburgh 
Botanic Garden, which induced me to regard the plant as a 
variety of the polymorphous B. Lobbu, Lindl. 
Rhizome stout. Pseudobulbs pear-shaped, decidedly sheathed 
when young, at small distances one from another, single leaved. 
Leaf cuneate, oblong-acute. Racemes beneath the bulbs, with 
nearly obsolete flower-stalks, one-flowered. Stalked ovaries very 
long. Upper sepal ligulate acute or acuminate; lateral sepals 
nearly equal, but broader and more or less falcate. T'epals on 
the superior base half-cordate, lanceolate acuminate or acute, 
straight. Lip with a claw, cordato-hastate or cordate at the base, 
oblong acute, with a fold on each side. Column somewhat three- 
lobed at its apex. Sepals, tepals and labellum on the under side 
