718 



Umbelliferae 



Chaerophyllum 



Chaerophyllum procumbens (L)Crantz 



Jan. 



Feb. 



Mar. 



Apr 



May 



June 



July 



Aug 



Sept. 



Oct. 



Nov. 



Dec 



Miles 



50 



Map 1522 



Chaerophyllum procumbens 



var Shortii T & G 



Cent. Maine and from w. N. E. to Ont. and Minn., southw. to Tenn. and 

 in the mts. to N. C. 



5923. ERYNGIUM [Tourn.] L. 



1. Eryngium yuccaefolium Michx. BUTTON-SNAKEROOT. Map 1519. 

 Infrequent to frequent in moist sandy soil in prairie habitats in north- 

 western and western Indiana and in the southern counties in dry oak 

 woods which, for the most part, were formerly known as the barrens. 



Conn, to Minn., southw. to Fla. and Tex. 



5935. CHAEROPHYLLUM [Tourn] L. 



Stems glabrous or nearly so; under surface of leaves glabrous or nearly so, the 

 segments of the leaflets oblong, bluntish or rounded at the apex; umbels on long 

 peduncles; pedicels not clavate. 



Fruit 7-8 mm long, glabrous 1. C. procumbent. 



Fruit about 6 mm long, densely pubescent with short, spreading hairs 



la. C. procumbens var. Shortii. 



Stems distinctly villous; under surface of leaves villous, the segments of the leaflets 



lanceolate or oblanceolate, acutish; umbels sessile; pedicels clavate 



2. C. Tainturieri. 



1. Chaerophyllum procumbens (L.) Crantz. Chervil. Map 1521. Fre- 

 quent on the alluvial flood plains of streams throughout the state except in 

 the northern counties where it is rare. Where it is found it is usually 

 abundant and sometimes an annoying weed. 



N. Y., Mich, to Iowa, southw. to N. C, La., and Ark. 



la. Chaerophyllum procumbens var. Shortii T. & G. Map 1522. Abun- 

 dant on the alluvial bank of the Ohio River above the mouth of Fourteen- 

 mile Creek in Clark County. The variety flowers about 10 days earlier 

 than the species which grew in abundance about a fourth mile from where 

 the variety was found. The two were not mixed. The species was badly 



