Panicum. | Graminee. 8 
Page 130.—For Panicum Linn. read: 
Glume I adaxial : 
Spikelets unarmed : ; ; f . 4. BRACHIARIA. 
Spikelets armed with hooked bristles . 4a. PSEUDECHINOLZENA. 
Glume I abaxial : 
Glumes awnless : 
Glume II, inflated-saccate ; fruit stipulate 4b. SACCIOLEPIS. 
Glume II not inflated-saccate; fruit not 
stipulate : 
Inflorescence a spiciform panicle . . 4c. HyMENACHNE. 
Inflorescence an open or contracted 
panicle, or of secund spikes: 
Glume I not crested at apex: 
Glume I shorter than glume II: 
Inflorescence an open or con- 
tracted panicle : 
Spikelets not gibbous. . 4d. PANICUM. 
Spikelets gibbous . 3 . 4e. CYRTOCOCCUM. 
Inflorescence of secund spikes : 
Glume IV acute, not mucron- 
ate in fruit . ; : . 4f. PASPALIDIUM. 
Glume IV obtuse, mucronate 
in fruit . : . 4g. UROCHLOA. 
Glumes I and II subequal . . 4h. HEMIGYMNIA. 
Glume I crested at apex . . 4i, ACROCERAS. 
Glumes awned or cuspidate : 
Spikelets not silky . : ; : . 4j. ECHINOCHLOA. 
Spikelets silky . ; : eae as . 4k. Rhynchelytrum. 
4. BRACHIARIA Griseb. 
Annual or perennial grasses; blades narrow; ligule small; 
infl. various; spikelets ovate, lanceolate or obovate, adaxial; 
gl. I usually small, directed towards the axis; gls. II & III 
5-7 veined, subequal; gl. IV crustaceous with involute 
margins; stam. 3; styles 2, free, blackish-purple (in all species 
examined); grain tightly enclosed.—Sp. about 80; Tropics 
generally. 
The genus Brachiaria was founded by Grisebach, in Ledebour’s FI. 
Ross. IV, p. 469 (1853), with B. eruceformis Griseb. as the type, but 
the chief difference from Panicum, namely the reversed spikelets, was 
not pointed out till 1903 by Nash, in Small. Fl. S.E.U.S. p. 50 (1903). 
Rachis of spikes broad, flattened . . I. B. ERUCFORMIS. 
Rachis of spikes narrow, filiform : 
Nodes densely bearded : : . ta. B. mutica. 
Nodes naked or puberulous : 
Spikelets glabrous : 
Leaves bright green: 
Spikelets obovoid : 
Spikelets distant . F ; . 2. B. SEMIVERTICILLATA. 
Spikelets imbricate : ; . 3. B. DISTACHYA. 
Spikelets lanceolate, imbricate . 4. B. MILIIFORMIS. 
Part V. 
