TRbooora 
JOURNAL OF 
THE NEW ENGLAND BOTANICAL CLUB 
Vol. 25. February, 1923. No. 290. 
SOME CRITICAL PLANTS OF ATLANTIC NORTH 
AMERICA. 
C. A. WEATHERBY. 
THE following notes are the result of an attempt to name accurately 
certain critical plants contained in the collections of the late Professor 
E. J. Grimes from southeastern Virginia. In so far as they have 
merit, it is hoped that they may serve, in some sort, as a memorial 
of the thorough and keenly discriminating work which, during two 
seasons, he had done as collector and student of the too little known 
flora of the southern coastal plain, as represented in his region. All 
botanists interested in the taxonomy, distribution, and ecology of 
the plants of eastern North America may well regret his untimely 
death. 
Though the bulk of the finished notes is not great, some of them 
have called for a considerable correspondence. I am indebted for 
the loan of specimens, for needed information, or for other aid in 
the preparation of this paper, to Prof. J. F. Collins, Dr. A. B. Stout, 
Mr. K. K. Mackenzie, Mr. Bayard Long and, like all students of 
our eastern flora, to Prof. M. L. Fernald. To all, my thanks are 
extended. $ 
CAREX MrrCHELLIANA M. A. Curtis, Am. Journ. Sci. xliv. 84 (1843); 
Dewey, op. cit. xlviii. 140 (1845) in part, but not as to illustration; 
Boott, Ill. i. 18, t. 50 (1858), at least as to perigynium figured.— 
Similar to C. crinita, var. gynandra, but the spikes usually more 
slender; lowest sheaths slightly  hispidulous or rarely smooth; 
perigynia ovate, 2.5-3.5 mm. long, 1.4-2 mm. wide, lenticular, 
scarcely inflated, strongly granular-roughened with minute papillae, 
