Brachystegia woodland and also in evergreen vegetation, flowered May 
16th 1938, Milne-Redhead 4375; ‘‘Sepals green, mottled maroon, 
petals greenish-yellow, edged maroon, lip white, side lobes maroon, 
anther lemon-yellow. ’’ 
This is clearly a widely spread species, mainly in sa- 
vanna vegetation but also in rain-forest. Its affinities and 
characteristic features are set out in the diagnosis. The 
frequently more or less reflexed or almost pendulous ra- 
ceme is an interesting character. The lip is a truly re- 
markable structure which is very difficult to describe. It 
is very fleshy, more or less ellipsoidal, and somewhat 
curved especially in the lower part. Here there are two 
low parallel keels which run forward for about two-thirds 
of the lip becoming lower and more undulate or sinuous 
towards their apices. The body of the lip is smooth at 
the base, but in the centre the surface becomes increas- 
ingly broken up by very curved sinuous fissures forming 
a coarse and irregular reticulation. In the apical third 
this fissuring becomes so pronounced as to produce a 
series of large irregular warts covering the whole surface. 
The general effect is reminiscent of a brain, hence the 
specific epithet. These irregularities are well shown in 
several gatherings in liquid preservative and are not due 
to drying. 
Bulbophyllum porphyrostachys Swmmerhayes 
sp. nov. affine B. lupulino Lindl. a quo rhachide medio 
anguste nuda, bracteis purpureis apice breviter incurva- 
tis, labello magis carnoso alis angustissimis apice verru- 
coso facile distinguendum. 
Herba epiphytica, glabra; rhizoma repens, teres, 2-8 
mm. diametro, basi pseudobulborum radices numerosas 
flexuosas ramosas emittens. Pseudobulbi 2.5—4 em. dis- 
tantes, erecti, saepius 4-angulati, ellipsoidei vel oblongo- 
ellipsoidei, 2-4 cm. longi, 1.5—2 cm. diametro, basi cata- 
phyllis paucis, scariosis apiculatis + vestiti, apice diphylli. 
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