136 METASPERMAE OF THE MINNESOTA VALLEY. 



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Genera: 6; warmer regions and in temperate zones. 

 Species: 340 ± ; 60 per cent, in Brazil. 



ERIOCAULON Linn. Gen. ed. II, 81 (1742). 



Banclalia, Spliaerocliloa, Syiuphachne Beauv. Ann. Sci. 

 Nat. 1, xiii, 47 (1828). 



Nasnaythia Huds. F1. Angl. ed. 2, 414 (1778). 

 Leucocephala Roxb. n. Ind. Ill, 612 (1832). 

 Electrosperma F. Mull. Trans. Phil. Soc. Vict. I, 23 (1855). 

 Lasiolepis BoECKL. Flora 90 (1873). 

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

 Benth. and Hook., Gen. PI. Ill, 1020; Durand, Ind. Gen. Phan. 454; 

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



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 (Lesqiiereaux). 



Eriocauloii septangulare With. Bot Arr. 184 (1776). 

 Nasmythia articxdata Huds. F1. 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; Richt., PI. Eur. 176; Hook., Fl. Gt. 

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

 Ireland, Skye and the Hebrides. 



North America: Newf., 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). 

 l-^plicineruiii Moench, Moth. 237 (1794). 

 Kiiowiesia Hassk. Commel. Ind. 5(1870). 

 De.scjiiitaria SciiLECnT. Linn. XXVI, 140(1852). 

 Hcteriiclitliia Kun/e, Bot. Zeit. 1 (1850). 

 PyrrlKMina Hassk. Flora 366 (1869). 

 MaiKlonia Hassk. Flora 260 (1871). 



