130 METASPERMAE OF THE MINNESOTA VALLEY. 
S. St. 554; Coult , Fl. Colo. 382; Engl. Pax, Nat. Pflanz. II, 2, 125; Bail., 
Syn. Car. 62. 
North America: Newf., N. S., N. Br., Q., Ont. to 
Man.; S. to N. Eng., N. J. and Fla.; W. to Minn. and Mo, 
Minn. valley: Forest district; S. W. district; probably 
throughout; wet meadows and bogs or swamps. 
Hers.: Taylor 50, Elysian; Bailey 68, Vermilion lake; 
MacM. and Sheld. 67, Brainerd. 
Carex pauciflora Licutr. Fl. Scot. II, 543 (1777). 
C. patula Hups. Fl. Angl. 402 (1762) not Host. 
C. leucoglochin LINN. f. Suppl. 418 (1781). 
Leucoglochin pauciflorus HEUFF. Flora 528 (1844). 
Psyllophora pauciflora Scour. Enum. 697 (1866). 
Wats. and Coult., Gray’s Man. 6 ed. 592; Mac., Fl. Can. II, 111; Richt., 
Pl. Hur. 145; Hook., Fl. Gt. Brit. 448; Nym., Fl. Eur.; Herd., Fl. Eur. 
Russ. 138; Upham, Suppl. Minn. 86; Rothr., Alask. 457. 
Arctic and Alpine Europe. 
North America: Newf to Ont., Man., N. W. T. and 
Vancouver; N. to Sitka; S. to N. Eng., N. Penn., Mich. and 
Minn. 
Minn. valley: N. districts; peat bogs and cold marshes. 
HERB.: Sandberg 614, Center City; Bailey 203, Ver- 
milion lake. 
xX. AROIDEAE. Arum Family. 
Orontiaceae LinpLt. Veg. King. 193 (1846). 
Araceae ENGLER, DC. Mon. Phan. IT (1875). 
Endlicher, Gen. Pl. 232 (1840); Benth. and Hook., Gen. Pl. III, 955 
(1883); Engler in Engler and Prantl, Nat. Pflanz. 2, III, 102 (1887). 
Genera: 105 living; 2-3 extinet? Tropical and temper- 
ate regions. 
Species: 1000; 92 per cent. in tropics; 8 per cent. in 
temperate regions. 
ACORUS Linn. Gen. 296 (1787). 
Benth. and Hook., Gen. Pl. ITI, 999; Durand, Ind. Gen. Phan. Engler 
and Prantl., Nat. Pflanz. 2, III, 118 (Engler); Schenck, Palacophyt. 378. 
Living species: 2; Japan, 1; temperate northern 
regions; 1. 
Fossil species: 2-38, doubtful; Spitzbergen, 1: ter- 
tiary, (Heer). 
Acorus calamus LINN. Spec. 824 (1758). 
A, odoratus LAM. FI. Fr. III, 299 (1778). 
Calamus aromaticus GULDENST. It. II, 327 (1791). 
Acorus avomaticus GILIB. Exerc. Phyt. IT, 205 (1792 
A. commutatus ScHorTT. Prodr. Aroid. 578 (1860). 
