270 THE TA.SMANIAN FLORA. 



D. GLOMBRATA, Linn. A coarse tufted grass, 2-3 feet high. Leaves flat, with 

 serrated edges. Inflorescence from 2 inches to 1 foot long. Clusters few or 

 numerous, on short or long peduncles, mostly about f inch diameter. Spikelets 

 flat, 3-5-fl'owered, about 4 lines long. Glumes rigid, keeled, acute or shortly 

 awned. 



Introduced. 



38. POA. 



Spikelets few to many flowered, small, slightly flattened, in linear to loose 

 panicles. Glumes usually obtuse. 



A large geniis, of world-wide distribution. 



Spikelets in a rigid linear panicle 

 Stems flat 



Panicle loose, or at least not rigid. Stem cylindrical. 

 Leaves slender, with involute margins. 



Panicle long, linear Glumes softly pubescent 

 Panicle spreading or clustered. Glumes nearly 

 glabrous ... 

 Leaves flat. 



Panicle linear, but loose ... 

 Panicle spreading. 



Short. Glumes obtuse, with a comparatively 



broad scarious margin 

 Tall. Glumes acute. 



Glumes with a few woolly hairs 

 Glumes with well-marked lateral nerves 



1. P. CJiSPiTOSA, Forst. Most variable in size and habit, generally tufted, 

 usually more or less scabrous all over. Leaves slender, harsh, usually filiform, 

 with involute margins, rarely (in shady situations) rather flat, always shorter than 

 the stems. Stems 6 inches to 2 feet. Panicle loose, with distant spreading 

 branches to rather compact. Spikelets usually many-flowered and 3-4 lines long, 

 but often reduced to 1 or 2 flowers and hardly exceeding 1 line. Glumes obtuse 

 to acute, often purple. 



Very common in all situations ; also throughout extra-tropical Australia and 

 New Zealand. 



Amongst the very numerous forms assum.ed by this grass the following may 

 be noted : — 



Var. ausiralis. Leaves filiform, very short. Stems about 6 inches. 

 Panicle small and loose. Spikelets about 2-flowered, 1-1-| line long. 

 P. australU, R. Br. 



Var. tenera. Creeping and tangled in the undergrowth. Leaves at the 

 nodes short, filiform, smooth. Panicle short, loose. Spikelets 1 or 

 2-flowered, about 1 line. P. tenera, P. v. M. 



Var. alpina. Stunted. Leaves filiform, involute, but thicker than in 

 lowland forms. Panicle rather dense. Spikelets usually 3 lines long, 

 purple. 



Var. littnralis. Creeping, with erect branches. Leaves distichous, flat. 

 Spikelets normal, few, in a compact panicle. In sand-dunes, Recherche, 

 &c. 



2. P. BILLARDIERI, Steud. A rigid, tufted, coastal grass. Leaves often 

 exceeding the. stems, filiform, rigid, with involute margins. Stems 1-2 feet. 

 Panicle elongated, branched, narrow, sometimes nearly linear. Spikelets about 



