Monograph of North American Carices. 291 



— Buxbaumii, Wahl. __ parviflora, Host. 



— digitalis, Muhl. __ Vahlii, Schk. 



— fuliginosa, Schk. _ Davisii, Torrey. 



f ft Staminiferous and pistilliferous spikes distinct, 



* Staminiferous spike solitary. 



a. Two stigmas. 



C. fusca, Schk. 



— cuspidata, Wahl. 



— mutica, R. Br. 



— Novae Angliae, nob. 



— aurea, Nutt. 

 b. Three stigmas. 



1. Pistilliferous spike sessile, or with the 

 peduncle enclosed. 

 C. nigra, Allion. 



. saxatilis, L. 

 compacta, R. Br. 

 rigida, Good. 

 pulla, Good, 

 concolor, i2. Br. 



. tristachya, Thunb. 



• varia, Muhl. 



• Richardsonii, R. Br. 



• concinna, R. Br. 



• ericetorum, Poll. 



■ montana, L. 



• prmcox, Jacq. 

 emarginata, Schk. 



■ tomentosa, L. 

 vestita, Willd. 

 dasycarpa, Muhl. 

 mucronata, Allion, 

 Schkuhrii, Willd. 

 supina, Willd. 

 sphasrocarpa, Willd. 

 globuiaris, Willd. 

 cethostachya, Schk. 

 pubescens, Muhl. 

 flava, L. 



(Ederi, Ehrh. 

 tentaculata, Muhl. 



alba, Hcenke. 

 binervis, Smith. 

 refracta, Schk. 

 plantaginea, Lam. 

 anceps, Mvhl 



— pilulifera, L. 



— marginata, Muhl 



— lupulina, Muhl. 



— folliculata, L. 



— xanthophysa, Wahl. 



— subulata, Mich. 



— clavata, Thunb. 



— borbonica, Lam, 



— extensa, Good. 



— pedata, L. 



— ornithopoda, Willd, 



— digitata, L. 



-— clandestina, Good. 



— livida, Wahl. 



— firma, Host. 



— approximator Allion. 



— umbrosa, Host. 



— fmbriata, Schk. 



* — alpestris, Allion. - 



2. Pistilliferous spikes on exsert peduncles 

 partly sheathed at the base, 

 C. breviculmis, R. Br. 



— cataracta, R. Br. 



— oligocarpa, Schk 



— scabrata, nob. 

 -- panicea, L. 



