Refugium Botantcwn. December, 1872. 
g 
TAB, 122. 
Tribe VANDEZ. 
Genus Oncipium, Sw. 
O. microcuitum, Bat. in Lindl. Bot. Reg. xxvi. 1840, Misc. 193! 
- 
xxix. 1843, Tab. 23! Lindl. Fol. Orch., Oncidium, No. 21. Walp. 
Ann. vi. 711! Radicibus validissimis deorsum versis albidis 
nudis, pseudobulbis approximatis ligulato-pyriformibus obtus- 
angulo-tetragonis brevibus nitidis, primum vaginis paucis 
triangulis non laminigeris fultis, demum basi subnudis valde 
incrassatis monophyllis vulgo rufo-brunneis, folio crassissimo 
cuneato-oblongo acuto, limbo subecartilagineo minute crispulo- 
denticulato, vulgo rufo-brunneo sub-pruinato, inflorescentia 
multo longiori, rhachi subcesia, basi distanter minute vaginata 
superne paniculata, ramis distantibus brevibus paucifloris, 
apice racemosa, bracteis squamiformibus ovaria pedicellata 
longe non equantibus, sepalo dorsali cuneato-oblongo obtuse 
acuto, sepalis lateralibus abrupte unguiculatis oblongis obtuse 
subacutis, tepalis cuneato-oblongis apiculatis hinc undulatis, 
labelli ungue lato ima basi minutissime utrinque semicordato, 
lamina transversa obtusangula quadriloba undulata apiculo 
minuto terminali interposito in sinu antico, dimidio replicata, 
callo tumido abrupto a regione ante unguem in basin apiculi 
minuti, utrinque bilobo, carina obtusa in medio, columna 
trigona, rostellari processu triangulo-lineari, alis triangulis 
margine hine crenulatis paulo deorsum versis. Sepala et tepala 
cinnamomea, limbo hine imo insiliente viridulo, demum flava. 
Labellum album maculis quibusdam flavis atropurpureo cinctis. 
Columna alba; apices alarum virides. Limbus tabule infra- 
stigmatice atropurpureus. 
This species must have been introduced at various times; it 
would appear never to have been common, and yet it may be said 
never 
to have been quite wanting. All the plants are said to 
come from Guatemala. The first flowered at Biddulph Grange, 
with J. Bateman, Eisq., sent by the late Mr. Ure Skinner. I do 
not remember to have seen wild specimens, neither do I possess 
any. 
Roots very stout, descending, whitish, never hairy. Pseudo- 
bulbs close together, ligulato-pyriform, obtuse-angled tetragonous, 
