COMPOSITAE (composite FAMILY) 



821 



dm. high ; basal leaves from broadly obovate with rounded tips to oblanceolate 

 and acutish, distinctly 3-nerved ; stem-leaves scattered, lanceolate, acuudnate ; 



lieads loosely or densely corymbose ; bracts of the pistil- 

 late heads linear, purplish or green, with pale tips; styles 

 crimson. {A. plantayinea R.Br.) — Dry soil, s. Me. to 

 Minn., and south w. Apr.-June. 



= = Heads comparatively large, averaging 9 (8-10.0) 

 mm. high ; stems stoutish. 



a. Basal leaves mostly hroad-ohovate or rhombic-obovate, 

 narrowed from near the middle to the acutish or blunt 

 tip. 



high 



the 



sometimes 

 mature ones 



':m 



4. A. fallax Greene. Stems 1-4 dm 

 slightly glandular ; basal leaves large, 

 2-5 cm. broad ; lower stem-leaves oblong- 

 lanceolate, rather crowded ; corymb 

 rather dense ; bracts of the pistillate 

 head attenuate to scarious tips or broad 

 and somewhat petaloid ; styles pale, 

 sometimes crimson. {A. ambigens Fer- 

 nald.) — Rich open woods and fields, 

 centr. Me. to Minn., and southw. May, 

 June. Fig. 978. 



6. Basal leaves from spatulate to narrowly spatulate-obovate, 



with rounded tips. 



5. A. occidentalis Greene. Stout ; the stem at first low, 

 becoming 2.5-4 dm. high ; basal leaves 1-2.5 cm. broad; stem- 

 leaves lanceolate to oblanceolate, rather conspicuous ; inflores- ptk. a. occidentalis. 

 cence subcapitate ; bracts lanceolate to oblong, with conspicu- 

 ous white tips; styles crimson. {A. Farwellii Fernald, not Greene.) — Rich 

 open soil, e. Que. ito Minn., s. to s. w. Me., s. N. H., w. Mass., N. Y., and 111. 

 May, June. Fig. 979. 



■t-t- -tH- Basal leaves small, 2-5 cm. long. (Xos. 10 and 11 with poorly developed 



stolons might be sought here.) 



= Basal leaves sptatulate, ivith little or no distinction of blade and petiole. 



6. A. rupicola Fernald. Stem? slender, 1.5-3 dm. 

 high ; stolons very numerous and short, forming dense 

 mats ; basal leaves mucronate, 1-4 cm. long ; stem-leaves 

 numerous (10-18), linear-attenuate, the tipper dark 

 green, strongly contrasting with the white-pubescent 



A. iui»ic()la. 



= = Basal leaves with 



stem ; corymb compact ; involucre of pistillate ]ilant 

 10 mm. high ; bracts with conspicuous lung yellovi: 

 white firm papery tips ; styles pale. — 

 Slaty ledges by the 5lattawamkeau R. 

 Me. June. Fig. 980. 



h- 



more distinct petioles and obovate 

 blades. 



a. Stem bearing purplish glandular hairs; basal leaves 



?)-nerved. 



high 



9Sl. A. Brainerdii. 



7. A. Brainerdii Fernald. Stem slender, 2-3 dm. 

 basal leaves obovate or orbicular-obovate , 1-2 cm. broad ; 

 stem-leaves remote, small ; corymb rather loose ; involucre 

 6-8 mm. high ; bracts white-tipped, the outer blunt, the inner attenuate ; styles 

 crimson. — Rich meadows and open woods, s. Me., Vt., and e. N. Y. May, 

 June. Fig. 981. 



