*r V  f  
PL TAE EXSICCATAE G YANAE
824. Cyperus rivularis KUNTH
Enum. Pl. ii. 6 (1837); Steud. Syn. Pl. Glum. ii. 41
(1855); Chapin. Fl. So. U. S. 506 (1860); Britton &
Brown, Ill. Fl. 1. 266, fig. 515 (1896); Small, Fl. Se.
U.S. 165 (1903); Abnims, I11. Fl. Pacif. St. i. 256, Hg.
609 (1923); Rydb. Fl. 1’r.& Pl. 142 (1932); Kukemlr
in Engl. l’l'la11ze11r. iv. Fam. 20 (Heft 101), 382 (1936).
Syn. L7.jlnw.vcerz.v   ('(l.Yf(lII€1I.§’ Purslx, Fl. Am. Sept. 52
(1811). (.v.(`(l.\`/{lIl(’US (Pursh) Bigelow, Fl. Bost. ed. Q, 18
(1821). C. rliam/ru.1',H.? (‘[l.V~lI€ll.\' (Pursh) '1‘()1‘I`. in Ann.
Lyc. N.Y. iii. 252 (1836); Gray, Man. 517 (18-1-8). C.
Bige/ozvii Steud. Syn. l’l. Glum. ii. 5 (1855). Chlorocy-
perus rivu/arix (Kuntll) Rikli in Pringsheim, Jahrb. VViss.
Bot. Xxvii. 564- (1895). l’_yr°reus rivu/aris (Kunth) Palla in
Allg. Bot. Zeirsvhr. xiii. ‘LS (1907).
Associated with I€}1_z/111:/lfzxpnra cupillnvea, Juncux braclzy-
cap/ul/us, J.Du11leyi, (lyperux .1~/rigo.1~u.\~, Eupaforium perffblia-
hun, Selugine//11 apoda, Lobe/ia Kalmii, Verbena haxlata,
Steironenul qluulriflorum, S0/illugo Rillde//ii, Helenium altissi-
mum and Illlllilflllfl cnpillare var. 0('Ci(1€IIl(l[€.
Low marshy argillaceous meadow, lf; miles east of Dex-
ter, “'rilSllt€I]2l\V County, MICHIGAN.
Coll. F.J.H1-;1u11ANN. September 3, 1937.

