DESCRIPTIONS OF TRIBES AND GENERA. 



63 



Blane, is in use in India as a medicine for cholera. 

 From the related A. refractus Brown, the Tahiti ilsanders 

 prepare a cosmetic oil (" monoi "). Exotheca Andersson 

 also belongs to this sub-genus. 



Sub-genus XII. Heteropogon (Persoon as a genus). 

 Racemes solitary and terminal upon the culm or its 

 branches ; spikelets imbricated, the first to fifth pairs 

 homogamous ; awns large, and those of all the spikelets 

 often entangled together ; $ or ? spikelets with a pointed 

 callus. 



Species five, in the tropics, one of which (A. contortus 

 L.) is cosmopolitan as far north as South Europe and 

 North America. The fruiting glumes of these species 

 easily bore into the skin and 

 flesh of sheep by means of their 

 pointed callus, and are thus a 

 source of injury, especially in 

 Australia. The awns may serve 

 as hygrometers. 



33. (97) Themeda Forsk. (An- 

 thistiria L. fil., Androscepia 

 Brongn., Heterelytrum Jungh., 

 Perobachne Presl). The racemes 

 are united into false panicles ; 

 they appear like a fascicle of 

 7-11 spikelets. Occupying the 

 middle of the racemes are 1-3, 

 long-awned, § spikelets ; near 

 these and in a false whorl at 

 the base are the unawned $ 

 spikelets ; the whole included in 

 a foliaceous bract. 



Species nine, in the warmer 

 countries of the Old World. 

 Th. Forskalii Hack. (Anthistiria 

 ciliata of authors, not of L. fil.) 

 (Fig. 20) from Syria and Algeria 

 to Cape of Good Hope and Tas- Fm. 20.— Themeda Forskaia 



„,, . . . , ,,-rr Hack. (After Andersson, Mo- 



mania. 1 his is the "Kangaroo nogr., Androp. pi. a.) 

 grass" of the Australian farmer, often almost exclusively 



