527 



Scirpus cyperinus (L.) Kunth, Enum. ii, 170 (1837) ; Eriophorum ciiperiniim L. Sp. 

 PI. ed. 2. i, 77 (17(32). 



Kare: Custer, altitude 1,000 lu., .July 10 (No. 1072). 



Scirpus pauciflorus Lightf. Fl. Scot. 1078 (1777). 



Banks of French Creek, Custer, altitude 1,600 lu., July 16 (No. 1073). 



Eleocharis palustris (L.) Roem. & Schult. Syst. Veg. ii, l.")l (1817) ; Scirpus palus- 

 /r(sL. Sp. ri. i, 47 (1753). 



The specimens of the form most common in the Black Hills are slender and resem- 

 ble variety //?a«c'fsc(Hs in habit, but the tubercle is rhomboidal, constricted below. 

 Lead City, altitude 1,600 m., .July 6; Custer, altitude 1,000 m., July 10 (No. 1074). 



At Hot Springs, altitude 1,000 m., August 3, specimens were collected which had 

 a taller, llatteued culm, to 8 dm. high; finely striate and purjilish at the base; 

 spikes large with thick, scarious-murgined bracts. No akenes were seen (No. 1075), 



Eleocharis acuminata (Muhl.) Nees, Linna-a, ix, 294 (1835); Scirpus acuminatiis 

 Muhl. Gram. 27 (1817). 



Low, about 2 to 2.5 dm. high, slender, fiat, resembling E. tenuis, but the akenes 

 are those of E. acuminata, viz, bluntly triangular, finely nniricate, yellowish, with 

 the tubercle small, pyramidal. Hot Springs, altitude 1,050 m., June 6; Hermosa, 

 altitude 1,000 m., June 24 (No. 1070). 



Carex straminea crawei ' Boott, 111. 121 (1862). 



Rare: Hot Springs, altitude 1,050 m., August 3 (No. 1077). 



Carex filifolia Nutt. Gen. ii, 204 (1818). 



This is regarded as very good for "winter pasture," and very likely has a nutritive 

 value. On a dry table-land: Hot Springs, altitude 1,100 m., June 14 (No. 1078). 



Carex pennsylvanica Lam. Encycl. iii, 388 (1789). 



A Avestern form with very long leaves (over 1.5 dm. long), was found in the open 

 valleys near Custer, altitude 1,700 m,, August 1 (No. 1079). 



A low form with short leaves was common in early spring in the same valleys; 

 May 5 (No. 1080). 



Carex marcida Boott; Hook. Fl. Bor. Amer. ii, 212 (1839). 



Two forms were collected, which Professor Bailey doubtfully refers to this species. 

 They are both too young for identification. One, more tufted and lower, was found 

 in the open valleys near Custer, altitude 1,700 m., June 5 (No. 1081). The other, 

 taller and more simple, was growing in a similar place, June 4 (No. 1084). 



Carex richardsonii R. Br. ; Richards. App. Fraukl. Journ. 751 (1823). 



Common throughout the open valleys around Custer, altitude 1,700 m., .Tune 6 

 (No. 1082). 



Carex stenophylla Wahl. Kongl. Svcn. Vet. Akad. Handl. ser. 2, xxiv, 142 (1803). 



The specimens are too young for identification, but are referred, subjectto question, 

 to this species. Open vallej' around Custer, June 1 (No. 1083). 



Carex stricta Lam. Encycl. iii, 387 (1789). 



A form of this species, very slender, with long, soft leaves. In a damp, shaded 

 place below Sylvan Lake, altitude 1,900 m., June 9 and July 18 (No. 1085). 



Carex siccata Dewey, Amer. Journ. Sci. x, 278 (1826). 



Rare: on the railroad embankment in Elk Canyon, altitute 1,200 m., June 29 

 (No. 1080). 



Carex festiva Dewey, Amer. .lonrn. Sci. xxix, 246 (1835). 



Very rare: near Rapid Creek, Rochford, altitude 1,600 m., July 12 (No. 1087). 



Carex utriculata Boott, Hook. Fl. Bor. Amer. ii, 221 (1839). 

 Wet meadow: Custer, altitude 1,6.50 m., July 16 (No. 1088). 



' The Carices of this collection were determined by Prof. L. II. Bailey. 



