LIST OF HIGHER SEED-PRODUCING PLANTS. 427 



rick 254, Minneapolis; Oesttund 151, Hennepin Co. ; Herb. Moyer 

 206, Chippewa Co. 



Asclepias purpurascens LINN. Spec. 214 (1753). 



A. amoena LINN. Spec. 217 (1753). 



Wats, and Coult., Gray's Man. 6 ed. 340; Gray, Syn. Fl.11,1, 90; Chap., 

 Fl. S. St. 362; Mac., Fl. Can. I, 320; Upham, Fl. Minn. 114; Britt., Fl. N. 

 J. 169; Webb., Fl. Neb. J41; Cov., Fl. Ark. 203. 



North America: N. Eng., N. J. and N. Car. to W. 

 Ont., Wise, and Minn.; S. to Tenn. and Neb. 



Minn, valley: Forest district to Cottonwood valley; 

 edges of woods. 



HERB.: Sheldon 849, Sleepy Eye; Manning 7, Lake 

 City. 



Asclepias tuberosa LINN. Spec. 316 (1753). 



Wats, and Coult., Gray's Man. 6 ed. 340; Britt., Fl. N. J. 170; Webb., 

 Fl. Neb. 141; Upham, FL Minn. 115; Mac.. Fl. Can. I, 318; Coult., Fl. Colo. 

 239; Chap., Fl. S. St. 365; Roth., Wheel. Exp. 188; Cov., Fl. Ark. 203; Gray, 

 Syn. Fl. II, 1, 89; Coult., Fl. Tex. 2(5. 



North America: Ont. and L. Huron region to Minn., 

 Dak. and Colo.; S. to N. Eng., N. J. and Fla. ; W. to Arizona 

 and Texas. 



Minn, valley: Throughout; common; high knolls, 

 prairies and railway embankments. 



HERB. : Taylor 558, Minnesota lake; Taylor 380, Janes- 

 ville; Bollard 575, Prior's lake, Scott Co.; Bollard 342, Jordan, 

 Scott Co.; Sheldon 775, Sleepy Eye; Sheldon 635, Waseca; Lei- 

 berg 54, "Minnesota"; Holzinger 189, Winona Co.; Herrick 255, 

 Minneapolis; Sandberg 473, Cannon Falls; Herb. Sheld. 1754, 

 Minneapolis; Herb. Moyer 207, Montevideo. 



LXXXIX. CONVOLVULACEAE. Morning- 

 Glory Family. 



Encilicher, Gen. PI. 651 (1836-40); Lindl., Vej. King. 633 (1846) 

 Cuscutaceae; Bentham and Hooker, Gen. Plant. II, 865 (1876) excl. Nolan- 

 aceae; Baillon, Hist. PL X, 305 (1891); Peter in Engler and Prantl, Nat. 

 Pflanz. IV, 3 a, 1 (1891). 



Genera: 25-26; temperate and tropical regions; most 

 abundant within the tropics; shrubby climbers, principally 

 tropical America; herbaceous forms widely distributed; center 

 in W. Indies. 



Species: 950-1000; 300 in Ipomea; 160 in Cuscuta; 

 fossil, 10-12, from Tertiary of Europe and U. S. 



