CYPERACEAE 
II. PENDULINAE 
squarrose, often but 
Perigynium strongly ribbed, 
EE glaucous: staminate sary tapering into the 
: basal sheaths not filamentos 
Be ee nerved, ARA AA pere 'glaucous : 
nate scales abruptly awned. 
Pistillate 
stami- 
erect:  seales pul -brown- 
Pistillate Spikes nodding: 
tinged : perigynium obscurely nerved. 
XXIX. ACUTAE 
Culm stout at base, smooth above: beak of perigynium 
poe twisted when dry: stolons very short, as- 
ing. 
Cuim more slender, very rough above: beak of perigy- 
nium et short or absent, not twisted : stolons, 
when ent, elongate, horiz ontal. 
In large ‘beds: leat-blades bluish- -green or glaucous- 
, flat at base: scales dark-purplish-brown. 
In AET CDS: Test blades COCA green, channeled 
ase: scales ‘reddish- bro 
XXX. CRYPTOCARPAE 
Perigynium smooth or slightly granular: acbenes nor- 
mally constricted in the middle. 
Sheaths rough hispid eet le 
scales tapering 2 i 
lower pistillate 
h y: “lower Dionpete scales 
abruptly Con duced m the 
Perigynium strongly papillate: Het normally not 
constricted in the middle: lower sheaths slightly his- 
pidul DIS dorsally: lower pistillate scales abruptly 
awned. 
Pes HIRTAE 
Perigynium glabrous to sparsely pubescent. 
Pistillate spikes oblong to globose, their scales 
S EL 5-7 ee perigynium 8-11 mm. Iong, 
oarse 
Pistillate spikes narrowly oblong, their scales 3- 
ved; perigynium 4-6 mm. long, impressed 
Bee altar densely pubescent. 
XXII. PALUDOSAE 
Represented by one species in our range 
XXXIII. COLLINSIAE 
Represented by one species. 
l ae orn 
Perigynium narrowly lanceolate, 2.5 mm. wide at 
pistillate scales acute to short- Bed. puteus halt 
ength of perigynium: pistillate spikes staminate at 
apex: bract-sheaths enlarged a ard. 
Perigynium lanceolate, 3 mm. ut base: pistillate 
scales awned, averaging three- n. jencth of peri- 
thea pistillate spikes not pes imd staminate at 
apex: bract-sheaths enlarged up 
XXXV ESICARIAE 
Pistillate scales (except rarely a not rough 
abruptly beaked, ne inflated: pis- 
tillate p oe or eylin dric, 20-40-flowered. 
Perigyni radually beak ed, much less 
S ONSIS z inflated : pistillate Spikes globose to short 
oblong, 10-20-flowered. 
Pistillate scales rough-awned. 
p died .cylindrie to nearly globose, 14-18 
thick: perigynium Lue into beak. 
Pistillate spikes narrowly cylindric, 8-12 mm. thick: 
perigynium abruptly congacted. into beak. 
105. 
118. 
119. 
. C. Joorii. 
C. verrucosa. 
. C. glaucescens. 
. C. torta. 
C. strictior. 
. C. stricta. 
. C. gynandra. 
. C. crinita. 
. C. Mitchelliana. 
C. turgescens. 
. C. Walteriana. 
. €. lanuginosa. 
. €. hyalinolepis. 
: C. Collins. 
. C. Smalliana. 
. C. folliculata. 
. C. bullata. 
C. Elliott. 
C. lurida. 
. C. Baileyi. 
