OP ARTS AND SCIENCES. 85 



Var. Emorti. 



G- Emoryi, Dewey, Bot. Mex. Bound. 230. 



G. acuta, var., Reverchon's distr. Texan pi. 1407. 



Spikes naore numerous (six to eight), more densely flowered, mostly 

 obtuse if not staminate at the apex, all or the lowest subtended by 

 very long and leaf-like bracts. — Texas ; margins of Blanco River, 

 Wright, New Braunfels, Lindheimer, " along the streams, Cherokee 

 Creek, Llano Co.," Reverchon. Wright's specimens, upon wliich 

 Dewey founded the species, bear much longer and more leafy bracts 

 than the other specimens which I have seen. 



C. STRiCTA + SALiNA ( G. spiculosa ?, W. Boott, Bot. Gaz. ix. 88. 

 ^^ Forma sterilis salince," Christ, Cat, Car. Eur. 7). Brackish marshes 

 near Boston, Mass., W. Boott, Morong. 



74. Carex aperta, Boott, Hook. Fl. Bor.-Am. ii. 218, t. 219. 



G. Haydenii, Dewey, Sill. Journ, xviii. 103. 



G. aperta, var. minor, Olney, Exsicc. fasc. v. no. 15. 

 Apparently not common. A smaller plant than G. stricta, with 

 shorter spikes and very conspicuous sijreading scales. — Northeastern 

 United States ; also Oregon, Washington Terr., and Idaho, from sev- 

 eral collectors. Founded upon specimens from the far Northwest. 

 Pei'haps the eastern United States plant is not G. aperta. 



Specimens from Colorado from several collectors appear to combine 

 characters of G. aquatilis, G. stricta, G. aperta, and G. interrupta. At 

 different times I have referred these specimens to different species. 

 Four different specimens collected last year by H. N. Patterson I named 

 C. aquatilis. Specimens collected in 1872 by C. C. Parry evidently 

 belong to the same species with Patterson's, and Olney says that Hall 

 & Harbour 616 is the same as Parry's. No. 582 of Powell's Expl. 

 Exped. is the same. I am now at a loss to make any satisfactory 

 determination of any of these specimens. 



75. Carex interrupta, Boeckeler, Linnaea, xl. 432. 



G. angustata, var. verticillata, Boott, Hook. Fl. Bor.-Am. ii. 



218. 

 G. verticillata, Boott, 111. 67, t. 183, f. 2, not Zoll. & Mor. 

 Differs from G. aperta and G. stricta in its stoloniferous habit, nearly 

 smooth and shorter culm, its more approximated spikes which are 

 usually much attenuated at the base, the appressed and obtuse or mu- 

 ticous scales, and especially in the small perigynium which is about 

 three fourths of a line long and half a line wide. — Oregon, Scouler, 

 Howell, Henderson, etc. 



