, 
p-. 252. Steud. Syn. Pl. Glum. i. p. 210. Diplachne grandiglumis, 
Hack. in Engl. Bot. Jahrb. xi. p. 404. Durand & Schinz, Consp. 
Fl. Afr. v. p. 878 
Sourn Arrica. Cape Colony : Albert Div., Nieuwe Hantem, stony 
places, 4,500-5,000 feet, Dréye ; Aliwal North Div., between Witte 
Bergen and Krai River, 4,500—5,000 feet, Drége. Griqualand West : 
aa deri Fontein and Night Fontein, Seer 2167. Bechuana- 
land : ony plains near Groot Kuil, Marloth, 989. Orange Free 
State : near mee Caledon River, Zeyher, 20 near Winberg, Buchanan, 
246. Transvaal: Rustenberg, MacLean ; near Nylenstrom, * Nelson, 99. 
Natal: sandy valley of Tugela River, "1,000 feet, Buchanan, 279, 
A minor variety of C. grandiglumis was oo by Mr. A. Rendle, 
Ic, from specimens collected by itsch in Pungo Andongo 
(2,709) and in Huilla (7,492). It kes \ apilealate smaller and more 
delicate than in the type, 25-3 lines long ; flowering ae subhyaline, 
more prominently awned than in the type, pale hyaline 
Crossotropis is allied to Triraphis and Leptocarydion, which has 
ora been reduced to 7'riodia, avery different and natural genus 
ving 7—9-nerved valves. Triraphis differs in the usually distinctly 
pedicalict spikelets, which are often arranged in compound and dense 
panicles and the longer awns, and excurrent side nerves of the valves. 
Leptocarydion, on the other iad, has dense spiciform panicles, long 
and finely awned valves, and peculi: ar leaf blades. The true Leptochlow, 
to which Nees referred C. grandiglumis, differ in the usually very 
minute spikelets, entire, muticous, broader valves, and mo- tly globose or 
subglobose grain. Dipla achne, again, to which Hackel referred the 
Durand & Schin ne and C. arenaria, Stapf pine uae arenaria : 
ees ; 
Uralepis arenaria, Steud.), asi Spikelets of a very similar structure. 
They are both annuals, —O.8 
Fig. 1, aligule; 2, a terminal ee 3, lower A eget 4, Pld “alee by a floret 
a grain 
with the contiguous thachilla jo joint ; valve a pale a lodicu 
back view ; 10, the same, front view; at cross satticl of a pice All Ne: 
© hh. Od: 
¢. cert hele pO AL. 
; r ye. 
