COMPOSITAE (COMPOSITE FAMILY) 



821 



978. A. fallax. 



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

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

 heads loosely or densely corymbose ; bracts of the pistil- 

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

 crimson. (A. plantaginea R. Br.) Dry soil, s. Me. to 

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



= = Heads comparatively large, averaging 9 (8-10.5) 

 mm. high ; stems stoutish. 



a. Basal leaves mostly broad-obovate or rhombic-obovate, 

 narrowed from near the middle to the acutish or blunt 

 tip. 



4. A. fallax Greene. Stems 1-4 dm. high, sometimes 

 slightly glandular ; basal leaves large, the mature ones 

 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. 



b. 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- 979. 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. to Minn., s. to s. w. Me., s. N. H., w. Mass., N. Y., and 111. 

 May, June. FIG. 979. 



+* -M. Basal leaves small, 2-5 cm. long. (^Vbs. 10 and 11 with poorly developed 

 stolons might be sought here. ) 



= Basal leaves spatulate, with 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 upper dark 

 green, strongly contrasting with the white-pubescent 

 stem ; corymb compact ; involucre of pistillate plant 8- 

 10 mm. high ; bracts with conspicuous long yellowish 

 white firm papery tips ; styles pale. 

 Slaty ledges by the Mattawamkeag R., 

 Me. June. FIG. 980. 



980. A. rupicola. 



= = Basal leaves with more distinct petioles and obovate 

 blades. 



a. Stem bearing purplish glandular hairs; basal leaves 

 Z-nerved. 



7. A. BrainSrdii Fernald. Stem slender, 2-3 dm. high ; 

 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 ; si 

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

 June. FIG. 981. 



981. A. Brainerdii. 



