52 ^' EEPOET OF THE STATE BOTANIST. 



43. Carex aquatilis Wahl. 



Stems ^°-Z° high, firm, erect, acutely triangular above, smooth ; 

 leaves long, sometimes surpassing the culm, l-i"-2" ^yide, rough- 

 margined, pale green or glaucous ; staminate spikes 1-4, the 

 highest on a short stalk, I'-l-J' in length, the others shorter and 

 sessile ; usually 1 or more with a setaceous or filiform bract ; 

 pistillate spikes 3-5, sessile or the lowest short-peduncled, 

 approximate or subdistant, or the lowest remote, cylindrical or 

 subclavate, the upper often staminate at the apex, -^'-2' long, 

 compactly flowered ; bracts leafy, much surpassing the culm ; 

 perigynia broadly ovate or elliptical, nerveless, biconvex, minutely 

 pointed or pointless, about the length of the narrow, obtuse, 

 brown scale. 



Cold upland swamps and wet places. Not common. June, 

 July. 



44. Carex aperta Boott. 



Stems 20-30' high, erect, triangular, rough above the middle ; 

 leaves about 1 J" wide, rough-margined, shorter than the culm ; 

 staminate spikes 1-2, cylindrical, the highest I'-l^' long, 

 short stalked, the other shorter and sessile, usually with a 

 setaceous bract; pistillate spikes 2-4, cylindrical, the upper 

 approximate and sessile, sometimes sterile at the apex, the lowest 

 distant, short-peduncled, often stamiaate above, 9"-15" long, 

 densely flowered above, more loosely at the tapering base ; upper 

 bract bristle-shaped, longer than the spike, the lowest leafy, mostly 

 shorter than the culm ; perigynia ovate, stipitate, nerveless, 

 olive-brown, minutely dotted, with a small notched point, more 

 or less spreading at maturity; scale dark brown, narrowly 

 lanceolate, pointed, horizontally spreading, exceeding the 

 perigynia. 



Rare. Essex county. July. 



This is Carex stricta var. decora Ba'deij in the 6th edition of 

 the Manual. 



45. Carex stricta Lam. 



Stems 2°-3° high, erect, acutely triangular, rough above the 

 middle ; basal sheaths with fibrillose margins, the fibrils either 

 reticulated or parallel; leaves 1"-1^" wide, rough margined, more 

 or lessinvolute when dry, glaucous-green, mostly shorter than the 

 culm; staminate spikes 1-3, i'-l^' long, the highest on a stalk 



