Artemisia COMPOSITAE Cacalia 



^[ ' A. Stelleriana Bess. Beach Wormwood. 



Frequent on coastal sands, Sussex County. Mid-May, June. 

 Introd. from northeastern Asia. 



A. biennis Willd. 



Collected in waste ground at New Castle by Commons, in 1866 

 and 1869 (A, D). Introd. from west of the Alleghenies. 



A. annua L. 



Weed in waste places about Wilmington. Late July to Sept. 

 Nat. from the Old World. 



A. pontica L. Roman Wormwood. 



Rare, New Castle County: waste ground, Centreville (NC), 

 Commons, in 1876 (A); roadside, Townsend (NC), Commons, 8 

 June 1896 (A). Adv. from central Europe. 



Arnica L. 

 A. acauUs (Walt.) BSP. 



Infrequent; sandy woods and roadsides on the Coastal Plain, 

 Cecil and New Castle Counties. June. 



Erechtites Raf. Fireweed. 



E. hieracifolia (L.) Raf., (typical). See Fernald: Rhodora 19, 

 24-27. 1917.) 



Frequent, in clearings, thickets, meadows and dune hollows, 

 from the Fall Line southward to Sussex Co unty. Early June to 

 mid-Sept. 



Var. intermedia Fern. See Fernald: 1. c. 



Frequent, in same habitats as the species. 



Cacalia L. Indian Plantain. 



C. suaveolens L. {Synosma suaveolens (L.) Raf.) 



Known only from alluvial soil along the Susquehanna River, in 

 Cecil County: 1 mi. s. s. w. of Rowlandsville, R. R. Tatnall, 4708, 

 30 Oct. 1940, and later collections (T, G, A). Through Oct. 



C. Muhlenbergii Fern. (C. reniformis Muhl. of manuals.) 

 One collection: Elkton (Ce), Thomas Seal, Aug. 1852 (A). 



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