408 Karl M. Wiegand and Arthur J. Eames 



1. E. pulchellus Michx. (E. bellidifolius of Cayuga Fl.) Robin's Plantain. 

 Rather dry grassy banks, in not too sterile, gravelly or sandy, somewhat acid or 



moderately calcareous, soils; frequent, and generally distributed. May 15-June 25. 

 S. Me. to Minn., southw. to Fla., La., and Kans., including the Coastal Plain. 



2. E. philadelphicus L. Fleabane. 



Moist grassy banks and fields and on wet ravine cliffs, in more or less calcareous 

 soils ; common, and generally distributed except in the acid soils. June ; often Oct. 

 in the ravines. 



Lab. to B'. C, southw. to Fla. and Calif. ; mostly absent from the Atlantic Coastal 

 Plain and from granitic N. E. 



3. E. ramosus (Walt.) BSP. (E. strigosus of Cayuga Fl.) Daisy Fleabane. 



A weed in dry or wet grassy fields and waste places, in various soils ; common, 

 and generally distributed. June-Sept. 



Newf. to B. C, southw. to Fla., La., Tex., and Calif.; common in N. E. and on 

 the Atlantic Coastal Plain. 



4. E. annuus (L.) Pers. Daisy Fleabane. 



A weed in situations similar to the preceding, but in somewhat richer soils ; 

 common, and generally distributed. July-Sept. 



N. S. to Man., southw. to Ga., Ky., and Mo. ; general in N. E. and on the Coastal 

 Plain. 



5. E. canadensis L. Horseweed. 



A weed in situations similar to the preceding, but in somewhat richer soils ; 

 common, and generally distributed. Aug.-Oct. 



Throughout N. A., except in the extreme North. Found also in other countries. 



8. Sericocarpus Nees 

 1. S. asteroides (L.) BSP. (S. conyzoides of Cayuga Fl.) White-topped Aster. 



Dry open woodlands and scrubby banks, in sandy or gravelly acid soils; frequent. 

 July 10-Aug. 



On the high hills w., s., and e. of Ithaca, along the ravine crests and lake cliffs, 

 and in the sandy soil n. of Cayuga Lake : South Hill ; Coy Glen ; Cascadilla Glen ; 

 Fall Creek ; Shurger Glen ; Taughannock Gorge ; and elsewhere. Rare or absent 

 in the McLean region and on the clays and richer soils back from the lake shore. 



S. Me. to Ont., southw. to Ala., Ky., and Ohio, including the Coastal Plain. 



9. Antennaria Gaertn. 3G 



a. Rosette leaves comparatively small, 0.2-2.1 cm. wide, with only the midrib promi- 

 nent to the tip beneath ; the lateral ribs short or wanting. 

 b. Middle and upper cauline leaves terminated by a flat or a merely involute 

 scarious appendage ; rosette leaves oblanceolate to spatulate-oblanceolate or 

 narrowly obovate, subacute, rarely rounded, 1 -nerved beneath; (corollas 4.3-6.2 

 mm. long, pappus hairs 6-9 mm. long, achenes 1.2-1.5 mm. long). 

 c. Stolons (when well developed) more or less flagelliform, creeping, with much 

 reduced leaves, the apical leaves later enlarging ; basal leaves, especially those 

 of the stolons, dull and more or less hairy above ; pistillate inflorescence of 

 1-8 subracemose ' heads ; involucral bracts purplish brown or reddish brown, 

 with white tips; styles usually crimson; staminate plants common, the 

 involucral bracts with expanded petaloid erose tips, and the pappus hairs at 

 the summit slightly dilated, undulate or entire. 1. A. neglecta 



38 Characters furnished by M. L. Fernald. Key constructed liy the authors. 



