138' NEW YORK STATE MUSEUM 



Scirpus microcarpus Presl. 

 S. sylvaticiis var. digynns Boeckl. 

 Small fruited bulrush 

 Wet places along Adirondack lodge road. August. 



Scirpus cyperinus {L.) Kwith 

 Eriophorum cyperiinim 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 S. cyperinus Eriophonim (Mx.) Britton, which is Erio- 

 phorum cyperifium var. laxi/m VV. & C. of the Manual ; the other is S. 

 cyperimis conde7isatus Pk. 



Eriophorum vaginatum L. 



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 L. 



Virginia cotton grass 

 Bogs, swamps and wet places. Common. August. 



CAREX 



Inflorescence monoecious 1 



Inflorescence dioecious scirpoidea 



1 Stauiinate flowers forming one or more separate terminal spikes 2 



1 Stamiuate flowers not forming separate spikes 28 



2 Pistillate spikes sessile or the lowest on a short inconspicuous 



or included peduncle, erect or spreading 3 



2 Pistillate spikes on distinct or exserted jieduncles, often 



recurved or drooping 17 



3 Pistillate spikes globose or ovoid 4 



3 Pistillate spikes oblong or cyliudric 8 



4 Perigynia pubescent ...1 5 



4 Perigynia glabrous 7 



5 Leaves 1.5-2 Hues wide pedicellata 



5 Leaves 1 line wide or less 6 



6 Staminate spike 3 lines long or more Novae-Augliae 



6 Staminate spike less than 3 lines long deflexa 



7 Perigynia 5 lines long or more iutumescens 



