232 Revision of the Genus Scleria. 



Fl. N. A., ii, 167; Sprengel. Syst. Veg., iii, 831; Willd., Sp. PI., to, 

 314 ; Eaton and Wright, 419 ; Torrey, Ann. Lye, iii. 375 : Flor. N. Y.. ii. 

 367 ; Gray, Manual, 570 ; Chapman, 531 ; Wood. Class book, 747 ; Bot. and 

 Flor., 368 ; Bceckeler, Linnsea, xxxviii, 467. 



<S didyocarpa, Grisebach, Cat. Plant. Cuben., 249. 



Habitat, Eastern Massachusetts and Rhode Island to Florida. 

 Also in Cuba (Plantae Cnbenses Wrightiana?, No. 3416 a). 



Var. pubescen§, n. var. Edges of the reticulations more or less hairy, 

 especially towards the apex of the achenium ; lateral fascicles generally on 

 longer peduncles. 



8. trichopoda, C. Wright, Plantae Cubenses. No. 3803. Name not in Grise. 

 bach's Cat. Plant. Cuben. 



Habitat, New Jersey Pine Barrens to Florida. Also in Cuba. 

 (C. Wright No. 3800.) Often distributed as S. laxa. Tort., (S. 

 Torrey ana, Walpers), from forms of which species it can gene- 

 rally be distinguished by the absence of transverse or spiral ridges 

 on the achenium. 



Var. obicura, n. var. Achenium bony, its surface marked with very ob- 

 scure reticulations, nearly even at the summit. 



Habitat, Salem, North Carolina, Schweinitz ; Rhode Island, 

 Thurber and Calder. All the specimens of this well-marked 

 form which have come under my notice are in the herbarium of 

 the Philadelphia Academy of Natural Sciences. 



Var. pumila, n. var. Culms only 4 to 6 inches high, smooth ; leaves 

 linear, short, smooth ; fascicles of but a single fertile and two or three 

 sterile flowers, sessile or very short-peduncled ; achenium very nearly as in 

 the type. 



Habitat, Orizaba, Mexico, Botter, No. ?74. 



This species, as Dr. Torrey has already pointed out,* is closely 

 allied to S. tessellata, Willd., of the East Indies, tropical Asia 

 and Australia, differing mainly in its smaller size, more slender 

 habit, and its fewer, smaller, nearly sessile lateral clusters. The 

 achenium is practically the same in each. 



* Ann. Lye, iii, 376. 



