476 Key to the System of 



ITNCINIA. 



2014. Slender. 



Sylvan, rather dwarf; steins very thin; leaves flaccid, 

 narrow-linear, scattered along the lower portion of the 

 stem ; spikelets comparatively short, never turgid, gene- 

 rally unsupported by any conspicuous floral leaf ; staminate 

 flowers few, terminal ; stamens two only ; pistillate flowers 

 several ; stigmas three ; floral bracts greenish, pointless ; 

 utricular cover of rhacheole and fruit greenish, gradually 

 much attenuated upwards ; fruit about twice as long as 

 broad. U. tenella. 



Robust ... ... ...... 2015 



2015. Leaves usually shorter than the stem. 



Alpine ; leaves broadish-linear, somewhat rigid, chiefly 

 towards the base of the stem ; spikelet rather short, 

 many-flowered, often supported by a conspicuous floral 

 leaf; staminate flowers terminal; floral bracts either 

 greenish or brownish, oval-lanceolar ; stamens three ; 

 stigmas three ; utricular cover of rhacheole and fruit gra- 

 dually attenuated upwards ; fruit fully twice as long as 

 broad. U. compacta. 



Leaves usually longer than the stem. 



Rather tall ; leaves broad -linear, somewhat flaccid, chiefly 

 along the lower portion of the stem ; spikelet elongated, 

 very slender, generally unsupported by any conspicuous 

 floral leaf ; floral bracts greenish, pointless ; staminate 

 flowers terminal, few or several ; stamens three ; pistillate 

 flowers numerous ; stigmas three ; utricular cover of 

 rhacheole and fruit much attenuated upwards ; fruit 

 about three times as long as broad. U. riparia. 



(Grasses). 



KIEROCKX.OA. 



2016. Outer bracts about as long as the inner. 



Here mostly alpine or subalpine, often tall ; leaves broadish, 

 somewhat channelled ; membrane inside at the upper 

 end of the leaf -stalk conspicuous ; spikelets somewhat 

 crowded in an usually elongated and lax panicle ; bracts 

 (glumes) pellucid, the supra-basal two ciliolated and often 

 produced into a short setular elongation (awn) ; stamens 

 of the pistillate flower only two ; anthers bilobed at both 

 ends (like those of most other grasses) ; styles disunited. 



H. redolens. 



