CXLTT. OnAMTNE.T3. 4il 



20. SPODIOPOGON, Tiiii. 



Spikclets in pairs along the jointed, anp^ularly-compreRsod 

 radiis of simple or branched spikes, 1 subsessile, the oilier 

 ])edieellate, both 2-fio\vered ; the lower flowers male. Outer 

 jj^himes rigid, often hairy ; the lower several-nerved (sometimes 

 2-fid) ; the upper keeled, pointed or 2-Hd and setigerous. 

 Flowering glume and palea thin and membranous, the glume 

 of the fertik^ flowers 2-fid, with a twisted awn. — Nees, I.e. p. 

 96 ; Benth. Fl. IlongJc. p. 42G. 



S. arcuatns, Nees, a grass with leafy cubiis, the leaves flat and much- 

 acuminate, and bearing 2-3 fulvous spikes, is found in British CafTraria 

 and Natal. 



21. TRACHYPOGON, Trin. 



Spikelets cylindrical, in pairs along the slender rachis of 

 solitary or tufted spikes ; the lower male, pointless ; upper 

 female, awned. Lowest outer glume several-nerved ; tlio 

 next narrower, 3-nerved ; a third empty hyaline. Flow- 

 ering glume (in the fertile s])ikelets) very thin, narrowed at 

 base, then linear-expanded, obtuse and ending in a long, more 

 or less hairy, twisted awn. — Nees, I.e. p. 99. 



T. Capensis, Nees, has a culm 1-2 feet high, flat, narrow leaves and soli- 

 tary spikes. 



22. ELIONURUS, Kth. 



Spikelets pointless, in pairs along the jointed axis of a 

 simple spike ; one male or neuter, pedicellate ; the other ses- 

 sile, with a hermaphrodite flower. Two outer glumes of the 

 fertile spikelets rigid, but thin ; the outer much larger, many- 

 nerved, taper-pointed or 2-fid, silky without, the second 

 smaller, keeled, entire ; third also empty, shorter and thinner. 

 Flowering glume still thinner, convolute. Scales truncate. 

 Grain compressed, free. — Nees, I.e. p. 94. 



Rigid grasses, with filiform leaves and nearly nude culms, ending in a 

 silky and silvery spike. — Nees has 2 species, one of which, E. argenteus, is 

 common in the Eastern district and at Natal. 



23. VOSSIA, AVall. and Griff*. 



Spikelets in pairs on each excavated joint of a flatlened- 

 jointed spike ; sessile spikelets slightly sunk in the rachis, 2- 

 flowered, lowest flowers male ; upper fertile, both very mem- 

 branous or transparent, pedicellate spikelets also 2-flowered ; 

 both flowers male or occasionally Jieuter, similar to those 

 of sessile s])ikelets. Outer glumes 2, dissimilar, the outer 

 very thick, in the pedicellate spikelets always, and in both 



