136 METASPERMAE OF THE MINNESOTA VALLEY. 



Genera: 6; warmer regions and in temperate zones. 

 Species : 340 ; 60 per cent, in Brazil. 



EBIOCAULON LINN. Gen. ed. II, 81 (1742). 



Randalia, Sphaerochloa, Symphachne BEAUV. Ann. Sci. 

 Nat. 1, xiii, 47 (1828). 



Nasnaythia HUDS. Fl. Angl. ed. 2, 414 (1778). 

 Leucocephala ROXB. Fl. Ind. Ill, 612 (1832). 

 Electrosperma F. MULL. Trans. Phil. Soc. Viet. I, 23 (1855). 

 Lasiolepis BOECKL. Flora 90 (1873). 

 Chaetodiscus STEUD. Syn. Glum. II, 261 (1855). 

 Benth. and Hook., Gen. PL III, 1020; Durand, Ind. Gen. Phan. 454; 

 Engler and Prantl, Nat. Pflanz. 2, IV, 26 (Hieronymus). 



Living species: 110; Asia, Africa, Australia, S. Amer- 

 ica, E. N. America, Ireland and Hebrides. N. America, 4-5; 

 S. Sts., 4; Canada, 1; E. Sts., 3. 



Fossil species : ? Tertiary, W. N America (Lesquereaux) . 



Eriocaulon septangulare WITH. Bot. Arr. 184 (1776). 

 Nasmythia articulata HUDS. Fl. Angl. 415 (1778). 

 'Eriocaulon decangulare HULL, Brit. Fl. 29 (1799). 

 E. pellucidum MICHX. Fl. N. Am. II, 166 (1803). 

 E. articulatum MORONG, Torr. Bull. XVIII, 353 (1891). 

 Wats, and Coult., Gray's Man. 6 ed. 567; Britt., Fl. N. J. 260; Upham, 

 Fl. Minn. 149; Mac., Fl. Can. II, 92; Eicht., PI. Eur. 176; Hook., Fl. Gt. 

 Brit. 421; Engl. Hieron., Nat. Pflanz. II, 4, 27. 

 Ireland, Skye and the Hebrides. 



North America: Newl, N. S., N. Br., Lake Superior 

 and Saskatchewan; S. to N. J. ; W. to Ind., Mich, and Minn. 



Minn, valley: Reported from N. edge; rare; borders 

 of ponds and lakes. 



HERB. : Bailey 536, Burntside lake. 



XIV. COMMELINACEAE. Spiderwort Family. 



Endlicher, Gen. PI. 124 (1840); Benth. and Hook., Gen. PI. Ill, 

 844 (1883); Schonland in Engler and Prantl, Nat. Pflanz. 2, IV, 60 (1887). 



Genera: 25; tropics, and a few in temperate regions, 

 except of Asia and Europe. 



Species: 325; 90 per cent. +, in tropics. 



TRADESCANTIA LINN. Gen. 277 (1737). 

 Ephemerum MOENCH, Meth. 237 (1794). 

 Knowlesia HASSK. Commel. Ind. 5 (1870). 

 Descautaria SCHLECHT. Linn. XXVI, 140 (1852). 

 Heterachthia KUNZE, Bot. Zeit. 1 (1850). 

 Pyrrheima HASSK. Flora 366 (1869). 

 Manclonia HASSK. Flora 260 (1871). 



