8 



York, Paine, Michigan, Minnesota, and westward to McLeod's 

 Lake, British Columbia, lat 55^, Macoiin. 



7. — Carex SaRT\YELLII, Dewey, Sill. Journ. (I.) xliii. 90, 



(1842) ; Sartw. Exsicc. No. 12 (1848). 



C, intermedia, Dewey, Sill. Journ. (IL) iv. 343 (1847) in part. 



C, disiicha, Sartw. Exsicc. No. 71 (1848); Boott, III. t. 410, 

 excl. f. 2 (1862) ; Olney, Exsicc. fasc. iv. No. 26 (1871) 



V. s. and American authors in general. 



I » 



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4 



k 



^ 



■■3f- 



\ 







C, disticha^ Huds. van Sartzvellii, Dewey, SilL Journ. (II.) 

 xli. 330 (i866). 



The American plant is abundantly distinct from the European 

 C, disticka, Huds., although Dewey declared (SilL Journ. 1866, 

 330) that '* specimens precisely like the varying forms of C, Sart- 



+ 



wellii have come to me from the north of Europe," and Boott 



(111. 126) could ** see no characters to distinguish C, SarHvellii 



from the European C disticha'' Dr. Boott, however, was well 



aware of the differences between the two species, and pointed 



them out, but intermediate specimens from France and Germany 



confounded him. All these intermediate forms are immature, 



but they are nevertheless clearly distinct from the American 



plant. The European forms which closely approach C. Sart- 



wellii are poorly developed and uncharacteristic specimens. 



Our plant is distinguished as follows: Plant more strict; 

 spikes much shorter and rounder (ovate-oblong and pointed 

 in C disticha), about equally developed throughout and giv- 

 ing the lighter colored head a narrower and more symmetrical ^ 

 outline (in C. disticka the lower spikes are most fully developed, 

 and the whole upper part of the head is often staminate, causing 

 the head to appear bushy) ; perigyni'um much shorter and small- 

 er, less prominently nerved. — New York to Utah and Montana, \ 



and British America. \ 



Carex Sartwelliana, Olney, Proc. Anier. Acad. Arts and Sci. 



vii. 396 (1868), may be known as Carex YoSEMiTANA. "\ 



8. — Carex Coreana. - I 



C. retrorsa, Schw., var. minor, Boott, in herb, distrib. 



' Culm erect and stout, a foot or foot and a half high, smooth ; 

 leav^es broad, shorter than the culm ; lower bract broad and erect / 



and much surpassing the culm; spikes one to three, short and 



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