954 FLORA. 



variable in length. In woods, Conn, and southern N. Y. to Penn., Iowa, N. Car, 

 and Ky. Sept. -Oct. 



Aster Lowrieknus lancifolius Porter. Leaves lanceolate, appressed-serrate, only the 

 basal ones cordate. Southern N. Y. and Penn. to W. Va. and Ala. 



Aster Lowrie&nus Bicknellii Porter. Leaves all lanceolate, all sharply serrate, or 

 the lowest incised, usually none of them cordate. Southern N. Y. and Penn. 



21. Aster Lindleyanus T. & G. LINDLEY'S ASTER. (I. F. f. 3754.) Stem 

 usually stout, glabrous, or sparingly pubescent, 3-10 dm. high, branched above. 

 Leaves rather thick, glabrous, or slightly pubescent, especially on the veins, the 

 lower and basal ones cordate at the base, sharply serrate, ovate, acute or acumi- 

 nate. 5-10 cm. long, with slender naked petioles; upper leaves ovate, or lanceo- 

 late, less serrate, or entire, sessile, or with margined petioles, those of the branches 

 lanceolate or linear-lanceolate, smaller; heads usually not numerous, 8-10 mm. 

 high; involucre broadly turbinate or nearly hemispheric, its bracts linear-lanceo- 

 late, acute, rather loosely imbricated, glabrous, or nearly so, their tips green; rays 

 10-20, blue or violet, 6-10 mm. long; pappus nearly white. In open places, Lab. 

 to the N. W. Terr, and Br. Col., south to Me. and Mich. Aug. -Oct. 



Aster Lindleyanus exfmius Burgess. Tall, sometimes 2 m. high; leaves thick, 

 usually rough and strigose-pubescent above, almost glabrous beneath ; inflorescence 

 widely branched, loosely paniculate, often over 6 dm. long; rays bluish purple; heads 

 nearly 2.5 cm. broad; bracts linear, abruptly acute. N. H. to Ohio and Va. 



22. Aster Drummondii Lindl. DRUMMOND'S ASTER. (I. F. f. 3755.) Stem 

 usually stout, finely and densely canescent, 6-15 dm. high. Leaves mostly thin, 

 ovate or ovate-lanceolate, acuminate, rough above, canescent beneath, the lower and 

 basal ones cordate, with slender naked petioles, sharply toothed, 5-10 cm. long, the 

 upper cordate or rounded at the base, usually on margined petioles, those of the 

 branches sessile and entire or nearly so, much smaller; heads 6-8 mm. high, rather 

 numerous on the racemose branches; involucre turbinate, its bracts linear, slightly 

 pubescent, acute or acuminate, their green tips appressed; rays 8-15, blue, 6-8 mm. 

 long; pappus whitish. In dry soil, borders of woods and on prairies, Ohio to 

 Minn., Kans., Ark. and Tex. Sept.-Oct. 



23. Aster sagittifolius Willd. ARROW-LEAVED ASTER. (I. F. f. 3756.) 

 Stem stout, or slender, strict, glabrous, or sparingly pubescent above, 6-15 dm. 

 high, paniculately branched at the inflorescence, the branches ascending. Leaves 

 thin, slightly roughened, or glabrous above, usually glabrate beneath, the lower 

 and basal ones cordate or sagittate, ovate-lanceolate, sharply serrate, acuminate, 

 7-15 cm. long, with slender naked or narrowly margined petioles; upper leaves 

 lanceolate, sessile, or on short and usually margined petioles, serrate or entire, 

 those of the branches very small; heads 5-8 mm. high, 16-20 mm. broad, numer- 

 ous, crowded, racemose; involucre turbinate, its bracts linear-subulate, glabrous or 

 nearly so, their tips green and slightly spreading; rays 10-15, 1J g nt blue or purp- 

 lish, 6-8 mm. long; pappus whitish. In dry soil, N. B. toN. Dak., N. J., Ky. and 

 Kans. Aug.-Oct. 



Aster sagittifblius dissitifl&rus Burgess. Differs from the typical form of the species 

 in its broader looser pyramidal inflorescence, the somewhat larger and longer pedun- 

 cled heads, the leaves less serrate, often none cordate. N.Y. to Fla., Miss, and Okla- 

 homa. , 



Aster sagittif61ius urophyllus (LindU Burgess. Leaves pilose beneath during growth, 

 persistently so on the veins rough, above, lanceolate, acuminate, the lower, or all of them, 

 cordate; stem often 15 dm. tall, the narrow inflorescence sometimes 9 dm. long; heads 

 about 6 mm. high; rays white. Grassy thickets and river-banks, N.Y. to Minn. 



24. Aster Saun Jersii Burgess, n. sp. SAUNDERS' ASTER. Puberulent on 

 the branches of the inflorescence, otherwise glabrous, or the petioles sparingly 

 ciliate; stem 3-6 dm. high. Basal leaves with narrowly margined or marginless 

 petioles, longer than the blades, the latter ovate, rather deeply cordate, serrate, 6- 

 IO cm. long; lower stem-leaves similar, but with margined petioles, often broadly 

 so, the uppermost lanceolate, chiefly entire, much smaller, partly clasping; heads 

 corymbose-paniculate 2.5 cm. broad or less; rays apparently purple; involucre 



