NEW YORK STATE MUSEUM 



Scirpus microcarpus Presl. 

 S. sylvaticus var. digynus Boeckl. 

 Small fruited bulrush 

 Wet places along Adirondack lodge road. August. 



Scirpus cyperinus (Z.) Kunth 

 Eriophorum cyperinum L. 

 Wool grass 



Swamps and wet places. Very common. August. 



Two varieties of this species occur in some parts of- the Adirondack 

 region. One is 6". cyperinus Eriophorum (Nix.) Britton, which is Erio- 

 phorum cyperinum var. laxum W. & C. of the Manual ; the other is S 

 cyperinus condensatus Pk. 



Eriophorum vaginatum Z. 



Sheathed cotton grass 



Swamps and mountain tops. June and July. North end of Mirror 

 lake, Averyville swamp, Wood farm swamp and summit of Mt Mclntyre. 



Eriophorum Virginicum Z. 



Virginia cotton grass 

 Bogs, swamps and wet places. Common. August. 



CAREX 



Inflorescence monoecious 1 



Iufloiesceuce dioecious scirpoioea 



1 Staminate flowers forming one or more separate terminal spikes 2 



1 Staminate flowers not forming separate spikes » 28 



2 Pistillate spikes sessile <>r the lowest on a short inconspicuous 



or included peduncle, greet or spreading 3 



2 Pistillate spikes on distinct or exserted peduncles, often 



recurved or drooping 17 



3 Pistillate spikes globose or o\ oi<l 4 



3 Pistillate spikes oblong or cyliudric 8 



4 Perigynia pubescent 5 



4 Perigynia glabrous. 7 



5 Leaves 1.5-2 lines wide pedicellata 



5 Leaves 1 line wide or less 6 



6 Staminate spike 3 lines long or more Novae-Angliae 



6 Staminate spike less tbau 3 lines long deflexa 



7 Perigynia 5 lines long or more iutumescens 



