SPECIES AFRICANAE. 347 
monophylli. Folia oblonga, ad 15 cm. longa, ad 3 cm. lata, 
subobtusa, basi in petiolum 4 cm. longum alte canaliculatum at- 
tenuata. Scapi elongati, ad 50 cm. longi, glabri, parte superiore 
florigera deflexa nigrescente minute punctulata, parte inferiore 
erecta viridi vaginis spathaceis distantibus circ. 1 cm. longis 
praedita ; spicae multiflorae bracteis ovato-lanceolatis acutis 
circ. 4 mm. longis nigridis. Sepala 8-9 mm. longa, basi 3 mm. 
lata, ovato-lanceolata, acuminata, glabra viridia lineis purpureo- 
brunneis + 5 percursa. Petala orbicularia circ. 1 mm. diametro, 
atro-purpurea margine pilis fuscis longiusculis ciliata basi 
viridia glabra. Labellum mobile circ. 5-6 mm. longum lineari- 
lanceolatum, basi circ. 2 mm. latum, atro-purpureum, medio 
labello excepto densissime crinitum apice pilis 2-3 mm. longis 
patentibus purpureo-fuscis basi praesertim in marginibus pilis 
circ. 1 mm. longis fuscis. Columna circ. 2 mm. longa dentibus 
falcatis longe acuminatis. 
Cultivated in Royal Botanic Garden, Edinburgh. Its 
origin is obscure, but from its very marked similarity to B. 
nudiscapum and its allies it is in all probability from West 
Tropical Africa. The structure of the petals is the most marked 
distinction between it and its nearest allies. The labellum ‘is 
very mobile, densely clothed, except in the middle, with long 
hairs; the hairs near the tip are susceptible to the slightest 
current of air. 
Polystachya Hamiltonii, W. W.Sm. Sp. nov, 
Species in vicinitatem P. Kirkit, Rolfe et P. afinis, Lindl. 
ponenda ; foliis longis, inflorescentiis racemosis, floribus circ. 
8 mm. longis, labello trilobo appropinquat, structura floris 
valde recedit. 
Pseudobulbi caespitosi anguste ovoidei, circ. 2.5 cm. longi, 
vaginis membranaceis striatis praediti, 3~4-phylli. Folia usque 
ad 12 cm. longa, + 2 cm. lata, oblonga, apice obtusa breviter 
et oblique emarginata, subcoriacea. Scapi erecti compressi 
pauciflori (4-6-flori) 4-5 cm. longi, minute pubescentes. Brac- 
teae squamiformes ovatae acuminatae 2-3 mm. longae sparse 
pubescentes. Pedicelli circ. 5 mm. longi dense pubescentes. 
Sepalum dorsale ovatum acutum 5-6 mm. longum, 2 mm. latum, 
planum, extus sparse pubescens intus glabrum ; sepala lateralia 
oblique triangulari-ovata acuta 8-9 mm. longa 3 mm. lata paululo 
concava extus puberula. Petala anguste spathulata 4 mm. 
longa, I mm. lata, glabra. Labellum trilobum paululo recurvum 
7 mm. longum, medio 4 mm. latum , lobi laterales erecti subauri- 
culaeformes 2 mm. lati glabri ; lobus intermedius late ovatus 
obtusus 2 mm. longus vix 2 mm. latus ; per totum labellum 
apice excepta currit linea intermedia 1 mm. lata dense albido- 
