THE TASMANIAN FLORA. 273 



43. CERATOCHLOA. 

 Spikelets many-flowered, flat Glumes flattened, keeled, acute or tapering 

 into a short awn. Inflorescence an erect loose panicle. 



C. DNIOLOIDES, D. C. Erect, tufted, 2-3 feet. Leaves broad, flat, 'nearly as 

 long as the stem. Panicle loose, 6 inches to 1 foot. Spikelets numerous, |-1 inch 

 long. Bromus unioloides, H. ; Festur.a unioloides, Willd. 



Very common. Introduced from North America. 



44. FBSTUOA. 



Spikelet many-flowered, flat. Glumes narrow, acute, in many species elongated 

 into a slender awn, rounded and faintly nerved on the back. 

 A genus common to all temperate climates. 



Awn slender, shorter than the glume... ... ... 1. F. ovina. 



Awn much longer than the glume ... ... ... 2. F. bromoides. 



Glume acute, unawned ... ... ... ... ... 3. F. elatior. 



li F. OVINA, Linn. Erect, slender, 1-3 feet. Leaves very short, filiform. 

 Panicle slender, loose, and rather spreading. Spikelet \ inch long, flat. 

 Flowering glumes with very slender awns, seldom more than half as long as the 

 glume. F. duriuscula, Linn., included. 



Common in woody places ; also in South Australia, Victoria, and New South 

 Wales ; also in temperate localities in both Hemispheres. 



2. F. BEOMOiDES, Linn. Tufted, slender, 6 inches to 1 foot. Leaves 

 filiform, shorter than the stem. Panicle rather dense, linear, one-sided, 1-4 inches. 

 Spikelets narrow, about ^ inch long. Glumes narrow, contracting into a 

 relatively long slender awn. F. myurus, Linn. 



Very common. Introduced. European. 



3. F. ELATIOR, lAnn. Tufted or shortly creeping, erect, 2-5 feet. Leaves flat, 

 :short, not very broad. Panicle erect, narrow, loose, one-sided, 3 inches to 1 foot. 

 Spikelets usually about | inch. Glumes acute or shortly awned. 



Occasionally found near cultivation, usually in damp situations. Introduced. 

 European. 



Very variable in general development. The form commonly met with 

 in pastures is often referred to as F. pratensis, Linn. 



45. AGROPTRUM. 



Spikelet many-flowered, flattened, sessile or nearly so, in two opposite rows, at 

 right angles to the longitudinal section of the stem. Rhachis alternately notched 

 to accommodate the spikelets. 



Distributed in temperate parts of both Hemispheres. 



Glumes elongated into long awns 1. A. scabrum. 



Glumes acute. 



Spikelets recurved 2. A. pectinatum. 



'Spikelets erect. 



Tufted. Spike 1-2 inches 3. A. velutimm. 



Creeping. Spike 2-4 inches long 4>. A. repenit. 



1. A. SCABEUM, Beauv. Erect, 1-3 feet. Leaves much shorter, narrow, 

 ■convolute when diy. Spike long, the spikelets often distant from one another. 

 Spikelets 1-1|^ inch long, the glumes continued into long slender awns. Triticum 

 ■ scabrum, R. Br. 



Very common ; also extra-tropical Australia and New Zealand. 



