175 
Amphilophis. ] clvii. graminea: (Stapf). 
or 0. — Andropogon pertusus, Stapf in Kew Bulletin, 1895, 209, not of 
Willd. A. Ischcemum , var. Icevifolius, Hack, in DC. Monogr. Phan, 
vi. 476, partly (?) ; Rendle in Cat. Afr. PI. Welw. ii. 149. 
Upper Guinea. Cape Verd Islands: S. Antao, Lowe l S. Nicolao, Bollel 
Lowe ! S. Jago ; Os Orgaos, Lowe ! Gold Coast : Christiansborg, Johnson , 1017 ! 
Accra, Don ! 
Lower Guinea. Angola : Loanda, Welwitsch ! 7348 ! 7375. Mossamedes ; 
Chiriqua and Humbe, Newton ! 
Also in the West Indies whence it was received as one of the “ sour grasses ” 
of those islands. A somewhat obscure plant. 
The original A ndropogon intermedium of R. Brown was described from Northern 
Australia. It is a more robust plant with much less hairy racemes and on the 
whole longer and not pitted spikelets. Other forms occur in India and Southern 
China and probably pother parts of tropical Asia. 
4. A. pertusa^ Stapf. Perennial ; rhizome short, innovations 
extra- or more often intra- vaginal ; cataphylls glabrous. Culms 
slender, terete, many-noded, suberect or geniculately ascending or 
often weak, trailing or rambling over the ground, rooting and throw- 
ing up tufted or single shoots from the nodes, glabrous. Leaf- 
sheaths of the innovation-shoots compressed, more or less keeled, 
the others terete, glabrous, smooth, intermediate and upper often 
much shorter than the internodes, usually bearded from the nodes ; 
ligules very short, truncate or of lower leaves up to 1 lin. long and 
rounded, membranous, ciliolate ; blades linear, long-attenuated to 
a fine point, hardly contracted at the base, of innovations short, 
rarely over 2 in. long, of culms up to 6 in., 1 j-2 lin. wide, pale green 
to glaucous, glabrous, pubescent or hirsute, often with tubercle- 
based hairs, particularly towards the ligule, margins rough upwards, 
midrib slender, lateral nerves fine, 2 or 3 on each side. Panicle sub- 
digitate, about 2 (rarely 3) in. long ; primary axis filiform, from less 
than \ to 1 in. long ; branches opposite or solitary, rarely in scanty 
whorls, naked for 2 (rarely 3) lin., simple, glabrous, smooth. Race- 
mes 1J-2J lin. long, often flexuous, pale or dull purplish, whitish, 
silkily villous ; joints and pedicels very similar, not much over 1 lin. 
long, ciliate, cilia much longer at the tips (of the pedicels to lin.). 
Sessile spikelet oblong, pale-greenish, including the shortly bearded 
callus 2 lin. long, beard up to 1 lin. long. Glumes equal ; lower very 
minutely truncate, flat on the back, chartaceous-membranous, hairy 
below the middle, keels rigidly ciliolate upwards, intracarinal nerves 
5-7, more marked upwards, pit always present, usually very pro- 
nounced, corresponding to a firm bulb-like protuberance on the inner 
side ; upper glume lanceolate, acute or mucronulate, 3-nerved, keel 
scaberulous, margins ciliate upwards. Valve of lower floret oblong, 
obtuse, not much over 1 lin. long, hyaline, nerveless, minutely cilio- 
late at the top ; awn of upper floret including the stipe 6-10 lin. long. 
Pedicelled spikelet $ , very like the sessile in shape and size, but 
usually darker, or neuter and then often rolling in and narrower. 
Glumes subequal, lower not pitted, about 7-nerved. Valve like that 
