290 REPORT OI'^ NEW JERSEY STATE MUSEUM. 



cc. Staminatc flowers at tip of spike. Perigynia widest above the 

 base, 2.5-4 nim. long, edges minutely serrulate, spikes 3-8, re- 

 mote except at top of culm, 6-15 flowered, plant weak. 



C. rosea, p. 307 

 bbhh. Inflorescence consisting of 2-3 clusters of 2-5 flowers, remote on a 

 filiform branched culm, perigynia 3.3-3.8 mm. long. 



C. trispernia, p. 310 



aaa. Staminate and pistillate flowers mingled, (staminate usually at the base), 



in uniform ovoid heads, clustered or usually separate at the end of the 



scape, each composed of a number of closely imbricated flat perigynia 



and scales. 



h. Perigynia lanceolate or ovate, 2-5 times as long as wide. 



c. Spikes green-brown, blunt. C. tribuloides, p. 311 



cc. Spikes brown or chestnut. C. scoparia, p. 310 



bb. Perigynia ovate, not more than twice as long as wide. 



c. Perigynia spreading, heads clustered. C. straviinea, p. 311 



cc. Perigynia erect and appressed, heads usually single, scattered 

 along the stem. 

 d. Heads silvery green or nearly white, sea beach species. 



C. silicia, p. 311 

 dd. Heads brown or green-brown. C. hormathodes, p. 312 



bbb. Perigynia orbicular or broadly ovate, as broad or even broader than 

 long. 



d. Heads green or silvery-green. C. albolutescens, p. 313 



dd. Heads brown. 



e. Achene short stalked. Heads 8-15 mm. long. 



C. alata, p. 312 

 ee. Achene sessile. Heads 6-8 mm. long. 



C. festucacea brevior, p. 312 



Carex collinsii Nutt. Collins' Sedge. 



PI. XXn., Fig. 3. 



Carex Collinsii Nuttall, Gen. H. 205. 1818 [New Jersey]. — Keller and 



Brown 76. 

 Carex subiilata Knieskern 27- — Torrey Ann. Lj'c. N. Y. HI. 419. 1836. — 

 Willis 71. — Britton 269. 



Pine Barren and Middle districts ; frequent in almost all the 

 Cedar swamps and in other wooded swamps in the southwestern 

 part of the State, also locally in Hudson, Bergen and Middlesex 

 Counties. This little sedge was nam.ed in honor of Zaccheus 

 Collins, a Philadelphia botanist, who, though he published noth- 

 ing, had probably the most thorough field knowledge of the 

 local flora, of tlie men of his time. He contributed much infor- 

 mation to Nuttall and Barton, and is frequently quoted hy them. 

 Fr. — Mid-Tune to early July, scattered spikes persisting 

 through the sumimer. 



