252 



THE TASMANIA^ FLORA. 



iv. Bracts leaf -like, much exceeding the head 



Bracts short 

 V. Leaves exceeding stems.... 

 Leaves shorter than stems 

 vi. Stem 3-angled 



Stem terete 

 vii. Spikelets sessile on the stem or nearly so 



Spikelets conspicuously stalked 

 viii. Glumes obtuse or nearly so 

 Glumes pointed ... 

 ix. Utricles small, flat, erect 



Utricles small, swollen, spreading 

 X. Glumes of female spikelets gradually narrowed 

 into a pointed apex . . . 

 Glunies obtuse, except for the prolonged 

 midrib ... 

 xi. Glumes pale green. Stems very short 



Glumes brown. Stems 6-8 inches 

 xii. Male spikelets 4-10, in a terminal cluster 



Male spikelets solitary ... 

 xiii. Utricles short, very swollen, spreading 

 Utricles short, flat, erect, imbricate ... 

 xiv. Utricles erect, imbricate 



Utricles spreading, with a long slender neck 

 1- C. ACiCDLAKis, Boott. A small slender plant, 

 ■ Spikelet solitary, terminal, few-flowered, subtended by 1 or 2 bracts, linear, and' 

 often exceeding the spike. Leaves filiform, about as long as the stems. Utricle 

 narrow, prolonged into a slender neck, about 2^ lines long. C. arc fieri, Boott. ;. 

 C pyrenaica, F. v. M. 



Cuming Head, and probably in many localities, but overlooked ; also Victoria, 

 N"ew South Wales, and New Zealand. 



2. C. iNVEBSA, R. Br. Slender, often 1-2 feet. Leaves filiform, shorter than 

 the stem'. Spikelets usually 2 or 3, ovoid, about 4 lines long, sessile, in a 

 terminal cluster, subtended by 1 or 2 rather long leafy bracts. Male flower* 

 very few, at the base of each spikelet. Utricles flat, the neck short, about 1 line 

 long, closely overlapping;. 



Brighton, Glenora, South Esk, and many other localities, chiefly in swamps ; 

 extra-tropical Australia and New Zealand . 



3. C. PANICULATA, lAfin. Tufted, coarse, erect, often 3 feet. Stems 3-angled,, 

 rough. Leaves nearly as long, flat, narrow, rough on the margins. Spikelets 

 numerous, in a terminal, more or less interrupted, spike. Male flowers 

 interspersed. Utricles about 1 line long, very convex, spreading, neck short. 

 C. appressa, R. Br. 



Very common in shady swamps ; also- extra-tropical Australia to New 

 Zealand ; also common in the Northern Hemisphere. In alpine localities the 

 plant is stunted and the spike dense, as in C. chlorantha. 



4. C. TBEETiCAULis, F. V. M. Stems terete, otherwise habit and details as in 

 the last. 



Bellerive, Glenora, Perth, &c. ; also extra-tropical Australia. 



5. C. CANESCENS, Linn. Usually in dense tufts. Stem 6-10 inches. Leaves 

 soft, grass-like, much longer. Spikelets 3-8, sessile, forming a rather close 

 terminal spike, each pale, oblong, and j inch long. Male flowers few, towards 

 the base. Utricles about 1 line long, ovate, compressed, with a short neck. 



Lake on Ironstone Eange ; also Victoria. Common to Asia, Eurepe, and 

 America. Alpine. 



