Description of three New Carices. 23 
eter. Perigynia crowded, deflexed, smooth and shining, 9 lines 
in length, 25-30 nerved, tapering into a long perfectly glabrous 
beak. Achenium obtusely triangular, minutely dotted under a 
lens, crowned with the long continuous style. 
r. Gray, who first detected this plant on the banks of the 
Mohawk at Utica, and described it as a variety of C. intumescens, 
Rudge, remarks, that it “is characterized by its larger and coarser 
habit, and by its globose, many-flowered pistillate spikes. It 
flowers a month later than the ordinary form of the species, and 
when young might readily be mistaken for C. lupulina.” ‘To 
this may be added, that C. intumescens, owing to the scarcely 
exserted peduncles, has the loose, few- (5-8-) flowered spikes 
closely approximate, so as to be almost indistinguishable ; and 
the perigynia are erect, much shorter, (6-7 lines long, ) slightly 
serrulate towards the apex of the beak, and only 15—20-nerved 
Though closely resembling C. intumescens, these constant char- 
acters and a marked difference in aspect, appear to entitle this 
plant to rank as a species.* 
Carex PLATYPHYLLA: spicis 4; mascula 1 erecta gracili pe- 
dunculata ; fomineis 3 erectis filiformibus laxe 3—4-floris incluse 
pedunculatis, suprema mascule approximata, caeteris remotis foli- 
oso-bracteatis ; bracteis spicas paulo superantibus ; stigmatibus 3 ; 
perigyniis triquetris ovalibus striatis brevissime rostellatis squa- 
mam ovatam hyalinam acutam vel mucronatam subeequantibus, 
ginee,) which may be characterized by the few-flowered, erect 
, 4 Since the foregoing description was in type, I have seen specimens from Co- 
umbus, Ohio, collected by Mr. Sullivant. — 
