65. 
Section Multiflorae. 
Carex vulpinoidea Michx. Sedge 
Ivy Neck. One station: strip of moist woods at source of Cheston 
Creek drainage. Hectare 4752. Canopy of Platanus occidentalis, 
Diospyros virginiana, Robinia pseudoacacia, etc. Associate species: 
Carex crinita, Glyceria striata, Poa compressa. Higman 736. 
Section Ovales. 
1. Wing of perigynium abruptly narrowed near middle of 
body; sterile culms strongly developed, their leaf- 
blades numerous, spreading, not clustered at the apex. 
2. Tips of perigynia appressed or ascending; peri- 
gynia thin, barely distended over the achenes...... C. tribuloides 
2. Tips of perigynia recurved or spreading; perigynia 
firm, obviously distended over the achenes. 
Expected (C. cristatella). 
1. Wing of perigynium not narrowed near middle of body; 
sterile culms often poorly developed, their leaf- 
blades erect or ascending, clustered toward the apex. 
3. Perigynia obovate, widest near the top. Expected 
(C. longii, C. albolutescens, C. alata). 
3. Perigynia not obovate, widest near middle or base. 
4, Leaf-sheaths green and strongly nerved ventrally 
nearly to the mouth. Expected (C. hormathodes). 
4, Leaf-sheaths strongly white-hyaline ventrally. 
5. Perigynia lanceolate to narrowly ovate- 
lanceolate, 3 to 4 times as long as wide..... C. scoparia 
5. Perigynia ovate-lanceolate or broader, at 
most twice as long as wide. Expected (C. 
tenera, C. normalis, C. festucaea, C. molesta). 
Carex tribuloides Wahl. Sedge 
Java Farm. One station: beside Fox Point Road, approx. hectare 
3523. Associate species: Eragrostis spectabilis, Dianthus armeria, 
Juncus tenuis, Euphorbia maculata, etc. Higman 733, 893. 
Ivy Neck. See next page. 
