484 PROCEEDINGS OP THE AMERICAN ACADEMY. 



(Geo.Thurber)-, Connecticut, without locality (Ghas. Wright); South- 

 ington, June 5, 1898 (0. H. Bissell) ; Waterford, May 29, 1889 (G. B. 

 Graves): Oregon, without locality, 1871 (E. Hall, no. 582) : Cali- 

 fornia, bogs along Strawberry Creek, El Dorado Co., alt. 1,815 m., 

 July 18, 1897 (E. Brainerd, no. 160 [type]) ; Big Trees, Calaveras 

 Co. (Bolander, no. 2324) ; Santa Eosa (J. M. Bigelow) ; Bluff Lake, 

 San Bernardino Mts., alt. 2,280 m., June, 1895 (S. B. Parish, no. 

 3702). 



Var. excelsior. — Fig. 90, 91. — Tall and slender, 0.3 to 1 m. 

 high : spike 3 to 5.5 cm. long ; spikelets 3 to 9, distinct, only the lower- 

 most remote, 12- to 20-flowered, at first oblong-cylindric, with the 

 perigynia ascending, later subglobose, with strongly reflexed perigynia 

 one-third longer than the scales. — G. sterilis (3, Boott, 111. i. 56, t. 

 146.* G. sterilis, var. excelsior, Bailey, Bull. Torr. CI. xx. 424; Howe, 

 1. c. — Newfoundland to Michigan and North Carolina. 



Var. cephalantha, Bailey. — Figs. 92 to 94. — The coarsest form, 

 3 to 7 dm. high: leaves 2 to 4 mm " broad: spike cylindric or slightly 

 moniliform, 3 to 7.5 cm. long : the J/, to 8 broad-oblong spikelets approxi- 

 mate or slightly remote (rarely 1 cm. apart), 15- to IfJ-flowered : 

 perigynia ovate, one-half as broad as long, wide-spreading or reflexed. — 

 Mem. Torr. CI. i. 58, & in Gray, Man. ed. 6, 618. C. sterilis, Boott, 

 111. i. 55, t. 146. G. sterilis, var. cephalantha, Bailey, Bull. Torr. CI. 

 xx. 425 ; Britton, 1. c. ; Howe, 1. c. 39. G. sterilis, var. aequidistans, 

 Peck in Howe, 1. c. — Newfoundland to NoRTn Carolina, Michi- 

 gan, and British Columbia. 



Var. angustata, Bailey. — Figs. 95 to 97. — Extremely slender or 

 almost setaceous, 1 or 2 dm. high (in shade often taller) : leaves 0.5 to 

 1.5 mm. wide : spike 0.75 to 2.5 cm. long ; the 6 or fewer 3- to 15-flow- 

 ered spikelets approximate (or slightly remote in shade) : the divaricate 

 perigynia lance-ovate or lanceolate, 2.5 to 3 mm. long, twice exceed- 

 ing the scales. — Mem. Torr. CI. i. 59, & in Gray, Man. ed. 6, 618. C. 

 stellulata, var. angustata, Carey in Gray, Man. 544. G. sterilis, var. 

 angustata, Bailey, Bull. Torr. CI. xx. 425 j Howe, 1. c. — Nova Scotia 

 to Connecticut, Lake St. John, Quebec, Illinois, and Michigan. 



++ ++ Perigynia about .70 as broad as long, the beak short, one-fourth to 



one-half as long as the body. 



= Tall: leaves 2.5 to 4.5 mm. broad : perigynia 2 to 3 mm. broad : scales 



sharp-pointed. 



27. C. sterilis, "Willd. — Figs. 98 to 100. — Goarse, 1 m. or less 

 high •. leaves flat, shorter than or equalling the culms: spike 1.5 to 3.5 



