994 



COMPOSITAE 



Erechtites 



~~50 



Map 2179 



Artemisia gnaphalodes Nutt. 



9389. ERECHTITES Raf. 



[Fernald. The genus Erechtites in temperate North America. Rhodora 

 19: 24-27. 1917.] 



1. Erechtites hieracifolia (L.) Raf. Fireweed. Map 2180. Infrequent 

 to frequent throughout the state. Found in many habitats and in dry and 

 moist soils. It is often found in burned-over areas in woodland and in 

 marsh land, where it frequently forms dense stands. It is in such an 

 area that the variation of the species can be best studied. Varieties have 

 been described, but my studies convince me that ours is a polymorphic 

 species. I have seen the form with reduced upper leaves growing close 

 beside a specimen which had long leaves up to the inflorescence. In the 

 same colony leaves may be found with bases clasping or not clasping. 

 Individuals with the upper leaves reduced is the common form, and those 

 with the upper leaves not reduced is less frequent. 



P. E. I. to Ont., southw. to Fla. and Tex. 



9409. CACALIA L. Indian Plantain 



Lower leaves hastate, the upper ones triangulai'-lanceolate; involucral bracts 12-15; 



heads 20-30-flowered; receptacle flat 1. C. suaveolens. 



Lower leaves not hastate, the upper ones not triangular-lanceolate; involucral bracts 



5; heads 5-flowered; receptacle appendaged in the center. 



Leaves, at least the lower ones, cordate or reniform at the base, palmately veined. 



Plants more or less glaucous, of a dry habitat; stems terete or inconspicuously 



furrowed; sinuses between the teeth of the margins of the leaves not ciliate. 



2. C. atriplicifolia. 



Plants not glaucous, of a dry or wet habitat; stems conspicuously furrowed; sinuses 



between the teeth of the margins of the leaves ciliate 3. C. Muhlenbergii. 



Leaves of an oval type, green on both sides, thick, strongly 5-7-nerved, the nerves of 

 a parallel type, margins entire or with short teeth 4. C. tuberosa. 



1. Cacalia suaveolens L. Map 2181. Local near the dunes about Lake 

 Michigan, and then very local until the southern part of the state is 

 reached, where it is very local to infrequent. In addition to my records, 



