32 



C. anceps^ van angtistijolia Dew. Wood's Bot. 1845,423. 

 C. gracilcscens, Steud. Cyp. Plant 226 (1856), v. s, Hb 



Steud. 

 C. laxijiora, vars. intermedia and blanda gracillivia, Boott, 



III. 37, 38, t 91 (1858). 



Lamarck's specimens, both from Virginia and New York, 

 although young, are unmistakably the plant which Boott made 

 var. intermedia, and I therefore revise the species that this form 

 may appear as the type. The specimens of C. anceps, both in 

 the collection of Willdenow and Schkuhr, are mixed. 



The type of 6^. /^^z/f^ra embraces slender plants, characterized 



by narrow leaves (usually less than yi in. in width), a peduncled 



Leaves broad (3^ to 5^ in, wide) ; staminate spike sessile or 

 nearly so; pistillate spikes cylindrical (1^ in. to i in. long), two 

 or three of them contiguous to the staminate spike and sessile or 

 nearly so, one or two remote and short peduncled ; bracts leafy 

 and prolonged. New Hampshire to New Jersey, Minnesota and 

 Kansas. 



Var MiCHAUXIL 



C. striatida, Michx. Fl. Bor.-Am. ii. 173 (1803) v. s. Hb. 

 Michx. 



C. ignota, Dewey; Sartw. Exsicc. No. g-j (1848), v. s. Sill; 



Journ. (H). viii. 348 (1849). 

 C. laxifiora, Boott. 111. t. 89 (1858). 



Usually rather tall and slender; leaves narrow for the species; 

 staminate spike commonly long-peduncled ; pistillate spikes scat- 

 tered, the lowest slenderly peduncled, loosely flowered, short (an 



r 



■ 



or at least very conspicuous staminate spike, scattered pistillate 

 spikes which are very loosely flowered and narrow {}/z to \y^ 

 in. long), and very blunt perigynia. Var. striattda is marked by 

 broad leaves, a very short and inconspicuous sessile staminate ^ 



spike, very short and thick pistillate spikes (rarely over ^ in. 

 long), the upper ones being sessile about the staminate spike, and 

 the lower exserted on very slender peduncles. Between these 

 . two plants are perplexing forms which bear some characters in 

 common, and which may be designated as 



Var. VARIANS. 



u 



C. laxijlora, van intermedia, Bailey, Bull. 3, Minn. Nat. Hist. 

 & GeoL Surv. 22 (1887), not Boott. 



4 



