THE TASMANIAN FLORA. 265 



as long or shorter, with, a 2 or 4-toothed apex, and bearing a fine dorsal awn 

 ^ inserted from near the top to near the base, without reference to size or habit of 

 inflorescence. Agrostis quadriseta, E. Br., X>. minor, Benth.; and U. frigida, 

 r. V. M., included. 



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



6. D. MONTANA, Benth. Tufted. Leaves filiform in small forms,' flat and 

 broad in larger ones. Stems 9 inches to 2 feet high. Panicle interupted, loose 

 but linear in the type, biit in some luxuriant forms the branches long and 

 spreading. Outer glumes acute, about 2 lines long. Mowering glume nearly as 

 long, 2-4-toothed, with a fine dorsal awn attached near the base. Pale nearly 

 as long as the glume. Bristle always conspicuous, some spikelets often 

 bearing a second flower, and rarely a third one. Agrostis montana, R. Br. 



Common ; also in Victoi'ia and South Australia. 



6. D. SCABEA, Benth. Tufted, and very variable in size. Leaves in smallest 

 forms slender and filiform, in the largest flat and 2 lines diameter. Stems from a 

 few inches to 3 feet high. Panicle loose, spreading to linear, 1-6 inches long. 

 Outer glumes acute, 1-2 lines long. Flowering glume about as long, with a very 

 minute dorsal awn attached near the apex. A. scabra, R. Br., A. contracta, 

 P. V. M., included. 



Very common ; also throughout Eastern Australia. 



Tasmanian forms with unusually long awns appear to connect this and 

 the last-. 



7. D. GC'N'siA.Nk, Benth. Tufted or with a slightly creeping base. Basal leaves 

 short and filiform ; stem-leaves rather broader. Stem about 6 inches high. 

 Panicle rather loose, 1-2 inches long. Outer glumes obtuse, about j line long. 

 Flowering glume twice as long, polished, obtuse, but with a short awn-like point 

 .about 5 as long as the glume. Pale nearly as long as the glume. Bristle 

 present. 



Zeehan and other localities on West Coast. 



21. GASTRIDIUM. 



Spikelets small, 1-flowered. Glumes .3, outer pair persistent, polished, and 

 .swollen at the base. Flowering, glume loosely enclosing the flower. Panicle 

 -dense. 



Northern Hemisphere. 



G. LENDlGEEUM, Benuv. Tufted erect annual. Leaves flat, few. Stems 

 '6 inches to 1 foot high. Panicle dense, ovate to cylindrical, 1-3 inches long. 

 Outer glumes 2 lines long, acute. Flowering glume \-ery short, nearly globose, 

 with a fine, filiform, dorsal awn. Pale present. 



Introduced. Berriedale. 



22. -PSAMMA. 



Spikelets 1-flowered. Glumes 3, outer pair persistent, acute, compressed, 

 ^carious. Flowering glume stifE, scarious, unawned. Pale about as long. Panicle 

 dense. ' 



Northern Hemisphere. 



P. ABENAEIA, Beauo. Rhizome creeping in the sand. Stems 2-3 feet high. 

 Leaves narrow, concave, stiff. Panicle dense, about 6 inches long. Spikelets 

 .about 5 lines long. Flowering glume nearly as long. Pale nearly as long, with 

 :a bristle-like extension of the rhachis. Ammophila arundinar.ea. 



Introduced. On sea-shores. 



