5-8 mm. latum, quinquenervosum. Jnflorescentia erecta, 
folio multo brevior, 4-7 em. alta, superne subdense pau- 
ciflora; pedunculus gracilis, 8-5 cm. longus, laevis, sub- 
teres vel leviter anceps, supra medium vagina singula 
instructus; bracteae subpatentes, triangulari-ovatae, acu- 
minatae, 1-2 mm. longae. Fores patentes, albi, rubro- 
notati; pedicellus (cum ovario) 7-9 mm. longus. Sepalwm 
intermedium lanceolato-oblongum, apice apiculatum, 
basi leviter dilatatum, 5.5-7 mm. longum, 8.5—-4 mm. 
latum; sepala lateralia oblique triangularia, subacuta, 
margine superiore (postice) 8.5—-9.5 mm. longa, inferiore 
5.5-6.5 mm. longa, basi 7.5-8 mm. lata, mentum obtu- 
sum 6-7 mm. longum formantia. Petala oblique oblongo- 
subspathulata, apice rotundata, 6-7 mm. longa, 2.25-2.5 
mm. lata. Labellum curvato-deflexum ex ungue brevi 
lato ambitu oblongum, infra medium trilobatum, totum 
9-10 mm. longum, 6-7 mm. latum (explanatum); lobus 
intermedius suborbiculari-quadratus, apice recurvato- 
apiculatus ut videtur retusus, marginibus undulatis, 5—5.5 
mm. longus, 5—5.25 mm. latus, rugulosus, farinaceo- 
pilosus, secus medium canaliculatus ; lobi laterales erecti, 
ab intermedio angulo recto sejuncti, incurvatim triangu- 
lares, subacuti, fere 1.5 mm. longi et lati. Coluwmna sub- 
teres, antice excavata, circiter 2.5 mm. longa; anthera 
hemisphaerica, dorso cristata, antice leviter producta; 
rostellum leviter productum ; stigma transverse oblongo- 
ellipticum. 
TANGANYIKA TERRITORY: Nguru Mts., Mhonda, 600 m. alt., in deep 
shade in fork of forest tree, April 1943, Moreau 353 (Tyrer). “*One 
glossy deep grass-green leaf. Flower glistening white with two narrow 
crimson lines running from anther base to column foot. No scent.”’ 
It is not easy to decide which species is the nearest 
relative of this addition to sect. Cultriformes. The nar- 
row leaf and general flower structure indicate its affinity 
with P. Mildbraedii Kraenzl. and P. gracilenta Kraenzl., 
but there is also a strong resemblance to P. fulvilabia 
[ 90 | 
