18 LEAFLETS. 



nef. Elem. 413, t. 391 (1694) and Inst. 511, t. 391 (1700); Bay, 

 Meth. 3 ed. 33 (1703); Linn. Fl. Lapp. 115 (1737) andFl. Saec. 

 116 (1745); Hill, Brit. Herbal., 488 (1756); Adans. Fam. 377 

 (1763); S. F. Gray, JSTat. Arr. ii. 367 (1831); Kaf. Fl. Tell. ii. 

 13 (1836) Spach. Phaner. x. 538 (1841); Fourreau, Trans. Linn. 

 Soc. Lyon, xvii, 146 (1869). 



Let me remark that if I have here attributed Bistokta as a 

 genus to Oaesalpino, it has not been that the name originated 

 with him. The type was figured under this name by Tragus as 

 early as 1553 ; but Csesalpino was the first of botanists to define 

 genera, and arrange them in a natural sequence. He is the real 

 Tournefort, and a century earlier than the one who bears that 

 name, and has usually the credit of having laid the foundations 

 of Systematic Botany. 



The type species rejoices in some diversity of binary names, 

 one of which, being invested with the right of priority, I would 

 adopt ; adding a partial list of the authors who have employed 

 it: B. MAJOE, Tragus (1552), Dodonaeus (1583), Thalius (1586), 

 Gerarde (1597), Clusius (1601), Tabernsemontanus (1635), Eay 

 (1696), and many more of the pre-Linnaeans. Then, since 1753, 

 S. F. Gray (1831). By the synonym B. vulgaris. Hill, Brit. 

 Herbal, 488 (1756); also B. officinalis, Kaf. Fl. Tell. iii. 13 

 (1836) and Fourreau, 1. c. (1869). 



Some other species of Bistoeta, indigenous to North America, 

 are B. vivipaea, S. F. Gray, 1. c, andB. Ameeican'A, Kaf. 1. c, 

 this based on F. bistortoides Pursh ; B. lineaeipolia, cephal- 



OPHOBA, VULOANICA, JEJUITA, BeENAEDIIJA, GLASTIFOLIA 



(Greene, Pitt. v. 197-199, under Polygonum) ; also B. Macoukii 

 (Small, in Macoun, PL Pribil. 570) and plumosa (Small). 



The following may be added to the number of recognizable 

 North American species. 



B. LILACINA. Slender, a foot high or more from a stoutish 

 contorted fibrous and chaffy-crowned root : leaves lance-linear 

 and linear, 3 to 6 inches long, retrorsely scaberulous beneath and 

 with a broad flat striate midvein without other manifest nerva- 

 tion, the margins crisped in the large, in the narrower not so, 

 in all revolute : ocres an inch long, ending in a short scarious 

 cup and a linear very erect leaf 1 or 3 inches long : spikes ovoid 



