262 



THE TASMAlflA^i FLORA. 



Flowering glumes 4-5 lines long. 



Onter glmnes ragged at apex ... ... ... 4. S. pubetcent. 



Outer glumes acute 5. S. iemibarbata. 



S. elegantUsima, Lab., was, by a probable error, recorded from Tasmania. 



1. S. TEEETiFOLiA, Stcud. A denselv-tufted rigid shore plant. 2-3 feet high 

 Leaves rigid, cylindrical, sharply pointed. Panicle rather close, about 6 inches 

 long. Outer glumes a<;ute, the longest about f inch long. Flowering glnme 

 hairy, nearly ^ inch long, the lateral lobes often concealed, but conspicnoiS. Awn 

 1-1^ inch long. Dwhelachne stipoides. Hook. 



Very common on shores ; also in Victoria, South Australia, "West Australia 

 and Xew Zealand. 



2. S. FLAVESCENS, Lab. A rather slender perennial, about 2 feet high. Leaves 

 flat, mostly narrow and glabrous or nearly so, convolute whoi dry. Panicle 

 narrow and dense, 6-9 inches long. Outer glumes acute, atitwt 4 inch lono-, 

 FloTyering glume hairy, about J inch long, lat-eral lobes mit::w. Awn about H 

 inch long. 



Widely distributed in the north, but hardly common; also thronghout 

 Southern Australia. 



3. S. SETACEA, M. Br. Slender, often 2 feet high. Basal leaves short, 

 filiform ; stem -leaves broader. Panicle very loose. Outer glumes thin, acute, 

 \ inch long. Flowering glume 2^-3 lines long, villous. Awn often 2 inches long, 

 slender, and usually glabrous. 



Found occasionally in most localities, but commoner in the north ; also 

 throughout Australia. 



The Tasmanian form approaches small forms of S. semibarhata. 



4. S. PUBESCENS, It. Br. Stem^s 2-3 feet high, from a persistent base. Basal 

 leaves very narrow, convolute, pubescent ; stem-leave.s flat when fresh, nodes 

 pubescent. Inflorescence very loose in flower, denser in fruit. Outer glumes 

 |-f inch long, thin, apex convex, but torn when the flower opens. Flowering 

 glume i-f inch long, pubescent. Awn finely pubescent to plumosel about 2 inches 

 long. 



Very common. Throughout extra-tropical Australia. 



Var. afhylla. Stems wiry, from a persistent base. Leaves reduced to 

 brown sheaths, and very small shrivelled laminse. Panicle vei-y loose. 

 Outer glumes | inch long. Flowering glume \ inch long. Dry hills 

 in Southern Tasmania. 



5. S. SEMIBARHATA, B. Br. Generally a larger plant in habit and detail to the 

 last, but not truly distinct. Nodes pubescent in Tasmanian forms. Panicle 

 loose in flower, dense in fruit. Outer glumes about | inch long, acute. Flowering 

 glumes ^-5 inch long. Awn plumose. 



Very common. Similar distribution to S. pubescen.^. 



17. PENTAPUGON. 



Spikelets 1-flo wared. Glumes 3, outer pair persistent. Flowering glume rolled 

 round the flower, and terminating in 4 filiform lobes, and bearing a fine twisted 

 awn inserted on the back, above the middle. Inflorescence a rather dense 

 panicle. 



A genus of one species, confined to Australia. 



P. HTJiLARDiEBi, R. Br. Leaves rather short, narrow, usually copiously 

 pubescent. Stem 1-2 feet high. Panicle 2-4 inches long. Spikelets ^-^ inch 

 long without the awn. 



Very widely distributed ; also in Victoria, South Australia, and New South 

 Wales. 



