598 
CL VII. GRAMINEiE (Stapf). 
[' Urochloa . 
up to over 1J in. long, semiterete, upwards flattened, pubescent. 
Racemes moderately dense, 2-seriate, simple, about 9 lin. long, 
solitary, evenly distributed ; rbacbis flat and pale green on the back, 
triquetrous, J lin. wide, pubescent to villous at the base, upwards 
loosely ciliate on the smooth angles and slightly pubescent on the 
face, otherwise glabrous, internodes about 1 lin. long ; pedicels 
solitary, reduced to sessile discs bearing some fine bristles below the 
smooth rim. Spikelets of each rank distinctly discontiguous, ovate 
to elliptic- oblong, subacute, somewhat turgid, up to 2 lin. long, pale 
greenish. Glumes very dissimilar ; lower very broad, ovate, sub- 
obtuse, clasping, up to J lin. long, hyaline, nerveless or very in- 
distinctly 1-3-nerved ; upper corresponding in size and outline to the 
spikelet, firmly membranous, up to 11-nerved with the nerves often 
distinct only towards the tip, more or less covered with short stiff 
hairs springing from coarse tubercles (hence almost verrucose), 
smoother towards the base. Lower floret barren (always ?) : valve 
similar in size, shape and vestiture to the upper glume, but flattened 
or subdepressed on the back, 9-nerved (or with 2-4 very fine additional 
nerves ; nerves rather distinct if seen from within) and sometimes 
smooth on the sides and along the middle nerve ; valvule elliptic- 
oblong, subobtuse, as long as the valve with hard cartilaginous keels. 
Upper floret broad-elliptic-oblong, almost 1 J lin. long, yellowish ; 
valve 7-nerved, very delicately wrinkled, mucro rough, very short. 
Anthers slightly over J lin. long. Grain rotundate-elliptic, very 
strongly compressed ; scutellum over half the length of the grain ; 
hilum rather large. 
Nile Land. Italian Somaliland : Gharabwein near Obbia, Drake- Brockman, 
954 ! 
The only anthers seen were found in the spikelets of lateral inflorescences 
which had not emerged from the supporting sheaths. They were enclosed in 
the floret together with the half -ripe grain, the spikelets evidently being cleisto- 
gamous. . 
9. U. setigera. Stapf. Perennial, up to over 3 ft. high ; innova- 
tions extra vaginal with thin pubescent cataphylls. Culms ascending 
sometimes from a long straggling rooting base with elongated more 
or less compressed arching internodes, sending up erect simple or 
sparingly branched secondary culms ; primary culms (except the 
prostrate base) or secondary culms 4-5-noded, quite glabrous, lower 
internodes often somewhat compressed, shortly exserted. Leaf- 
sheaths tight, those supporting branches at length slipping off the 
culms and often wrapped round the former, all very pale, smooth and 
glabrous except along the densely villously ciliate margins or with 
few fine tubercle-based hairs, nodes pubescent to silkily bearded ; 
ligules reduced to a densely ciliate rim ; blades lanceolate from a 
rounded or subcordate and semi-amplexicaul base, tapering to an 
acute point, 2J-3 in. by 6-7 lin., rarely much larger (up to 6 in. by 
11 lin.), flat, slightly rigid, pale green, glabrous and smooth except 
