. 



COMPOSITAE. 955 



>ut 8 mm. high, its bracts linear-lanceolate with acuminate green bracts. S. 

 »ak. and Iowa. Type from Roberts Co.. S. Dak. (De Alton Saunders, No. 8067.) 



25. Aster undulatus L. Wavy-leaf Aster. Small Fleabane. Various- 

 EAVKD Aster. (I. F. f. 3757.) Stem stiff, very rough and pubescent, divaricately 

 -anched above, 3-10 dm. high. Leaves usually thick, rough on both sides, 

 Eescent beneath, dentate, undulate or entire, acute or acuminate, the lowest and 

 isal ones ovate, cordate. 5-12 cm. long, with naked or margined petioles; middle 

 les ovate, lanceolate or oblong, with margined petioles dilated and clasping at the 

 ise. the upper sessile or clasping, those of the branches small and subulate; heads 

 jmerous, racemose and often secund on the spreading branches, about 8 mm. 

 gh. 16-20 mm. broad; involucre broadly turbinate, its bracts linear-oblong, 

 nescent, acute or acutish. their green tips appressed; rays 8-15, pale blue to 

 olet, 6-10 mm. long; pappus whitish. In dry soil, N. B. and Ont., south toFla., 

 la. and Ark. Sept.-Oct. 



Aster undulatus abruptifblius Burgess. Tall, 1-1.5 m. high; leaves rougher, chiefly 

 ort-ovate, sessile, entire and about 5 cm. long, 4 cm. broad; inflorescence pyramidal; 

 iads much darker, more crowded. N. Eng. to Va. 



Aster undulatus lorifurmis Burgess. Bredominant leaves greatly elongated, linear- 

 long to linear-lanceolate, often 15 cm. long, with the clasping base narrowed orbroad- 

 ed, only a few of the lower ones contracted into winged petioles; plant little pubescent 

 maturity. Eastern Mass. to Va. and Benn. 



Aster undulatus torquatus Burgess. Leafy, 2-3.5 dm. high, dark green, short- 

 wny; leaves small, very short and broad, close together, entire, their bases clasping the 

 ■B as a succession of collars, often 1 cm. in diameter; lowest leaves petioled; inflores- 

 ace much branched, paniculate. Martha's Vineyard, Mass., to Long Island. 



Aster undulatus triangularis Burgess. Tall, leafy, 1-2 m. high, pale; pubescence 

 ght; leaves hispid above, ovate-triangular, acuminate, chiefly 5-7 cm. long, 18 mm. 

 aad and sessile. N.Y. to S. Car. 



26. Aster patens Ait. Late Purple Aster. (I. F. f. 3758.) Stem slen- 

 r. rough. 3-9 dm. high, divergently branched. Leaves ovate-oblong to oblong- 

 lceolate, rough, pubescent, somewhat rigid, strongly cordate or auriculate-clasp- 

 y at the broad base, entire, acute, or the lowest obtuse, 2.5-7.5 cm. long, those of 

 i branches much smaller and bract-like, the margins rough-ciliate; heads 25 mm. 

 jad or more, solitary at the ends of the branches; involucre broadly turbinate, 



bracts linear-oblong, finely pubescent or scabrous and somewhat glandular, im- 

 cated. their green acute tips spreading; rays 20-30, purplish blue, or deep 

 let, 8-12 mm. long; pappus tawny; achenes pubescent. In dry, open places, 

 ss. to northern N. V., Minn., Kans., Fla., La. and Tex. Reported from Canada. 

 7. -Oct. 



27. Aster phlogifolius Muhl. Thin-leaved Purple Aster. (I. F. f. 3759.) 

 -.ilar to the preceding species, usually taller. Leaves larger, lanceolate to ob- 

 ig-lanceolate, entire, thin or membranous, acuminate at the apex, strongly auri- 

 tte-clasping at the base, roughish above, pubescent beneath, usually narrowed 

 kw the middle, sometimes 15 cm. long; heads usually numerous. 3-5 cm. broad. 



licled. or somewhat racemose on the branches; bracts of the involucre lance- 

 le, glabrate, rather loose, with herbaceous tips; rays numerous, purple-blue. In 

 Kxls and thickets, N. V. to Ohio, N. Car. and Tenn. Aug. -Sept. 



28. Aster Novae-Angliae L, New England Aster. (I. F. f. 3760.) 

 In stout, hispid, pubescent, corymbosely branched above, 6-25 dm. high, very 



Leaves oblong-lanceolate, entire, acute, pubescent. 5-12 cm. long, 12-25 

 wide, clasping the stem by an auriculate or broadly cordate base; heads 

 merous. 3-5 cm. broad, clustered at the ends of the branches; involucre hemi- 

 leric, its bracts linear-subulate, somewhat unequal, green, spreading, pubescent 

 more or less glandular-viscid; rays 40-50. linear, 10-16 mm. long, violet- 

 rple. rarely pink or red, or white; achenes pubescent; pappus reddish white. 

 fields, and along swamps, Quebec to the N. W. Terr., south to S. Car., Mo., 

 ns. and Colo. Aug. -Oct. 



29. Aster oblong-ifolius Nutt. Aromatic Aster. (I. F. f. 3761.) Stem 

 ich branched. hirsute-pul>e-cent. 3-7 dm. high, the branches divan'. 

 sending. Leaves crowded, oblong, or oblong-lanceolate, sessile by a broad, 

 rtly clasping base, usually rigid, entire, acute or mucronulate at the apex, rough 



