540 
CYPERACEAJ. (SEDGE FAMILY.) 
KT* T h l! W u ite membranaceous margins; the bracts resen. 
KrolS, 6 ’ andWith 3 Sh ° rt bri9,l y Pm'ongation- 
ed hranrl , < Good. Spikes with very short appress- 
, les > or ™ ln g a slender crowded spiked panicle; perigynia 
outer Z e9Ua lyh TT X ’ Sh ° rt ' stalked ’ with 3-5 short nerves on Hi 
rathpr Wmr * 6 ™ a d somewhat heart-shaped base; scale acute, 
tuselv tr‘ 0T ei / 1 Peri ^ niu m; achenium obovuid-pyriform , ob- 
naninl/z* var * minor. Lower branches of the 
ovaip.h (c0I ! Slstl “S of 6-8 small spikes) slightly spreading; perigynia 
short-stalk 6 ^ TOm a Jjroa< ^ base, plano-convex , with a tapering beaky 
scalp nv f 6 ’ nerve ® ratber obscure especially on the inner side; 
vlann r ° &IengtJl ° P tke perigynium ; achenium oblong , 
P^-convex (C. prajrea, De*,.) - Peat-bogs, New England to Mil 
but not H ^ Gr aD ^ brancbed tkan the ordinary European form, 
but not differing in any important character. 
merous d'ei^^* 0 ***^^***’ ^ ubk Panicle large, with very nu- 
es • veritr * J, ? crowded s P lkes °n the rather short spreading branch- 
ZtbZLl ° h0Vaee 'r ei,Uatl y Ucon ™’ sessile, “ short very at- 
ovate polmTdZZlZ y ( n TVtd ° n tach side ’ about the Ien S th of tie 
Swamrw v P anicu ^ ata > var. decomposita, Dew.) — 
% ^ “ PS ! Ya | es count 7» New York ( Sartwell ), and westward. 
a shnrf° ^ com P ressed > 2-3 nerved, membranaceous, with 
decomn ^ 0t 6 l r0U ®^ beak » yellow or brown at maturity : spikes 
of thTf" ; Wlth * Umerou s small very densely-flowered heads: scales 
roncrh r* ^ ! G , Spi es tawn y> with the green keel prolonged into a 
becomfr, 01 ” 1 hnct * short and resembling them at the base, or often 
_ Mult ^- and bristle-shaped and much exceeding the culm- 
more o^n VU ** >in0 *^ ea ’ Spike oblong and dense, or 
from a broirt laterru P ted » °f8-10 crowded clusters; perigynia ovate 
turitv (C ase » w * 1 ^ a more or less abrupt beak, diverging at ma- 
C mi * mU ll ^ dra » Muhl. C. bractedsa and C. polymorpha, Schw- 
the bpakT 01 ^ 013 ’ Varies with the perigynium narrower, and 
Low m a P enn § and more strongly serrulate. (C. seti\cea, Dew.) — 
the sivp T Ver ^ common *—This species varies exceedingly in 
!£' to 2# in iVn^h^ the perisjmium and beak. The spikes are fr ° m 
m I &S n *' a °n short stalks , plano-convex, without a margin , 
membranaceous, a thick and spongy base and a long tapering 
12 n r °; g ‘ beak > nerved (only obscurely in Nos. 20 
and 21) widely spreading and yellmc at maturity : spikes dense, 
more or ess aggregated, sometimes decompound: scales of the fer- 
