429 



late oblongis obtusis ferrugineis v. brunneis margine albi- 

 dis, foemineis putenfibua oblong o-hmceohtlU acufis c. ttcttmi- 

 iffit-fc atropurpureis v. ferrugineis medio saepe viridulis; 

 u t ri cul is squa ma mbm ufto breviorib m laUoi ibimpie Jmeam 

 rirr. hngis temri-membranaeeis orbicularis v. internum obo- 

 vatis aut ovalibns sessilibus latere interiors planiusculis 

 exteriore subangulato-convexis, breviss, rostratis. marginnlo 

 leviter reflexo, mermia rugulosis celluloso-granulatis strami- 

 neo-rafeseentibus ? ore emarginulato v. integro; caryopsi 

 perlaxe inclusa orbiculato-obovata basi attenuata lenti- 

 culari ? margin© acuta; punctulata Intea, stylo tenia ter- 

 minata. 



C. aperta Boott in Hook. FI. Bor. Amer. 2. 218. t 

 gift _ Boott JI1. 132. t. 426 (forma minor). — A. Gray 

 Man. ecL V a. 582. — C. stricta (Lamck.) Alitor. Amerie. 

 Sartwell, no. 53 (sub: ?7 C. aeuta v. ereeta u .) C vul- 

 garis? Maxim, in sched. 



America sept en tr. Amur. 



241. C. torta Boott. 



Pluriculmis; rbizom. brevissimo, fibrillis duria nuxlti- 

 ramosis ferrugineis; culmis tenuibus infinnis leviter cur- 

 vatis 9 — 24 poll. alt. triangulis parum compressis laevibus 

 v. apice interdum scabris, subtiliter punctatis striatis parte 

 inferiore foliatis; foliis brecibm remotitt alternis htthtsculis 

 herbaeeo - rigidulis breciier acuminatum plains 1 */i — 2 lin. 

 latis subtiliter nervatis laevibus v. margine supeme ner- 

 visque duobus prominulis scabriusculis 7 infimis cix polUca- 

 ribusy superioribus 4 5 poll, hag.; vagi ti is antice hyalino 

 -membranaceis pallidis, inferioribus reticulata -fissis; spi- 

 culis dntantibus elongafeis cylindraeeis gracilibus sesqui- 

 lineam latiss: mascula solitaria 2 1-pollicari^ foemineis 



