Refugium Botanicum. | [October, 1872. 
TAB. 119. 
Tribe MALAXxIDEA. 
Genus PLEUROTHALLIS, f. Br. 
P. parpipes, Rehb. f., MSS. Caulibus secundariis dense agegregatis, 
basi vagina arcta elongata dense maculata vaginatis, ab apice 
ad medium canaliculatis, folio oblongo basi rotundato, apice 
attenuato bidentato cum denticulo interposito, bene marginato, 
spatha inflorescentiarum hysterochronicarum minuta carinata 
acuta, racemis folium non equantibus solitariis seu geminis 
bifarius, bracteis ochreato-vaginatis apiculatis retusis ovaria 
pedicellata non sequantibus, ovario perigonioque extus parce 
velutinis, perigonio carnosulo, sepalo dorsali ligulato acuto, 
sepalo inferiori oblongo apice bidentato, limbo ciliatulo, infra 
nervos medios extus vix conspicue carinato, tepalis columnam 
equantibus ligulatis obtusissime acutis superne serrulatis 
uninerviis, labello ima basi utrinque sagittato-undulato utrinque 
obtusangulo oblongo-obtuso ciliolato, superne minute papuloso 
trinervi, carinis obtusangulis geminis in basi, columna gyracili 
arcuata superne ampliata, androclinio serrulato hine tridentato. 
Pedunculus viridis, maculis multis parvulis purpureo-vio- 
laceis. Folium ejusdem coloris. Sepala olivacea seu tandem 
brunnea atropurpurea. Tepala albida seu flavida. Labellum 
atropurpureum, linea baseos flava media. Columna flava. 
The late Mr. Bowmann discovered this plant near Rio Janeiro, 
in Brazil. I observed it living in the Saundersian garden in 1868, 
and have now a fresh specimen at hand from the same place 
in 1871. JI cannot find anything like it in the collection of 
Dr. Lindley or in my own. As a species it approximates, no 
doubt, very near the well-known Pleurothallis bicarinata, Lindl., 
which had also similar spotted sheaths. Itis, however, very easily 
distinguished by its inflorescence coming out above the base (not 
at, the base) of the much broader and heart-shaped leaf, by its 
petals being entire three-nerved, and by its very different lip. 
Root-stock tufted, the joints thickened and articulated at their 
apex. Secondary stems often arcuate at their base, straight, erect, 
upwards of a span high, terete, a little compressed beneath the leaf 
and channelled in the middle. Superior sheath long, ochre- 
coloured, with many small brownish dots (whence the name of 
