Victorian Plants. 503 



BIFZ.ACKNB. 



2115. Spikelets in a single slender spike. 



Annual, rather dwarf; leaves very narrow, also rather 

 short, few on the stem ; spikelets small, apprcssed, 

 verging somewhat unilaterally in the spike ; flowers few 

 or several ; fruit-supporting bract very short, three- 

 streaked, terminated by two minute tender blunt lobes ; 

 awn quite diminutive ; fruit loose within its bracts. 



D. loliiformis. 

 Spikelets in a contracted panicle. 



Perennial, rather tall ; leaves narrow, lax, incurved along 

 the margin ; panicle elongated, often only simply rami- 

 fied ; spikelets pale-greenish or somewhat dark-colored, 

 usually unprovided with stalks of their own ; flowers 

 from few to several ; fruit-supporting bract transparent, 

 three-streaked, short-pointed, but only indistinctly or 

 minutely bilobed ; fruit loose within its bracts. 



D. fusca. 

 DANTHONXA. 



2116. Bracts supporting the fruits uncleft, minutely den- 



ticulated at the summit, without any tufts of 

 hairlets. 



Swamp-grass, often tall ; leaves almost flat, somewhat 

 pointed ; panicle elongated, slightly or considerably 

 spreading ; spikelets capillary-stalked, particularly the 

 lower in age bending over ; rhacheole beset with short 

 hairlets ; flowers ten or less ; lowest bracts surpassed by 

 the others ; awn one only, slightly infra-terminal, twisted 

 towards the base ; fruit ellipsoid, quite loose within its 

 bracts when ripe. 



(Amphibromus Neesii ) D. nervcsa. 



Bracts supporting the fruits cleft into two lobes, 

 beset with mostly tufted hairlets outside ... ... 2117 



2117. Bracts supporting the fruits cleft to near the base. 



Desert-grass, rather tall ; stem-base enveloped in a close 

 whitish vestiture ; leaves almost flat ; panicle contracted, 

 short-branched ; spikelets rather large, seldom numerous ; 

 flowers several, hardly reaching beyond the lowest bracts ; 

 fruit-supporting bracts hardly ever exceeded by their awn, 

 their tufts of hairlets whitish, arranged in two tranverse 

 rows, their lobes simply pointed ; awn twisted towards 

 the base. D. bipartita. 



Bracts supporting the fruits cleft to near the middle 

 or still less divided ... ... 2118 



