COMPOSTTAE. 951 



ter of heads; peduncles filiform, as long as the heads, 6-8 mm. long; bracts pale; 

 rays short, narrow, chiefly 6, snow-white; disks at first golden yellow, finally 

 sienna brown; florets about 20; achenes densely short-hairy. In sunny or slightly 

 shaded rocky places, N. V. to the mountains of Va. Sept. 



Aster Claytoni crispicans Burgess. Basal leaves often not cordate, deeply incised ■ 

 those of the stem loiig-ucuminate or even caudate, sharply serrate with large acute close 

 teeth, some of which are suberect ; chief bracts of the involucre acute. On rocky banks, 

 solitary or in small clusters. Me. to N. Y. and N. J. 



8. Aster curvescens Burgess. Dome-topped Aster. (I. F. f. 3741.) 

 Dark green, chiefly glabrous; stem pale green, striate, delicate, 4-6 dm. high. 

 Basal leaves tufted, conspicuous, these and the lowest stem-leaves with a broad 

 shallow sinus, abruptly incurved-acuminate; middle leaves ovate, short-petioled, 

 rounded at the base, the upper lanceolate, slenderly acuminate, often falcate; 

 leaves firm, smoothish. the teeth broad, curved; inflorescence small, convex, 

 7- 1 2 cm. broad, its short filiform naked branches widely ascending; heads 

 8-10 mm. high; lower bracts short, obtuse, the others longer, nearly uniform, 

 scarious. shining, linear, often acute, usually glabrous; rays about 8, cream-white, 

 about 10 mm. long; disk becoming purple-brown; pappus early reddening; 

 achenes slender, glabrous. In loose moist shaded soil, N. Eng. and N. Y. to Va. 

 Aug. -Sept. 



Aster curvescens umbeliiformis Burgess. Stem very smooth, deep red, robust, 

 straight, sometimes 1 m. tall; leaves apple-green, smooth when dry, sparingly toothed; 

 inflorescence symmetrically umbelliform, decompound; sinus of the lower leaves rather 

 deep and narrow. In grassy woods and thickets, Conn, to Va. July. 



Aster curvescens oviformis Burgess. Stem about 7 dm. high, leafy ; leaves dull 

 yreen, not acuminate, very thin but rough, ovate, cordate with deep narrow sinus, 2 dm. 

 ong by 12 cm. wide, or smaller ; some of the bracts broader and green-tipped ; inflores- 

 :ence smaller and less branched. Range of the preceding. 



9. Aster Schreberi Nees. Schreber's Aster. (I. F. f. 3742.) Stem stout, 

 5-9 dm. high, with long internodes. Basal leaves often in extensive colonies, thin, 

 full green, firm, rough above, with scattered slender appressed bristles, pubescent 

 jeneath on the veins, reniform-cordate or cordate-triangular, often 17 cm. long by 

 [2 cm. wide, the basal sinus, when well developed, rectangular, 5 cm. across and 



5 cm. deep; upper leaves ovate-oblong to lanceolate, with a short broad basal 

 wing, or sessile; lower petioles long, ciliate when young; inflorescence decom- 

 K>und, flattish, or irregularly convex, 15-30 cm. broad; heads about I cm. high; 

 racts greenish, mostly obtuse, ciliate; rays usually 10. In borders of woods, 

 nd along fence rows in partial shade, N. Y. to Mich, and Va. July-Aug. 



10. Aster macrophyllus L. Large-leaved Aster. (I. F. f. 3743.) 

 bought; rootstocks long, thick; stem reddish, angular, 6-9 dm. high. Basal leaves 

 i rming large colonies, 3 or 4 to each stem, broad, cordate with a large irregular 

 inus. rough above, harsh, thick, the teeth broad, curved; upper stem-leaves 

 >blong with short broadly-winged petioles, the uppermost sessile, acute; inflor- 

 scence strigose and glandular, broadly corymbose, irregular; heads 10-12 mm. 

 Igh; peduncles rigid, thickish; rays about 16, 10-14 mrn - l° n gi chiefly lavender, 

 cmetimes violet, rarely pale; bracts conspicuously green-tipped, the lower acute, 

 he inner oblong, obtuse; disk turning reddish brown; florets short-lobed. In 

 noderately dry soil, in shaded places, Canada to Minn, and N. Car. Aug. 



Aster macrophyllus velutinus Burgess. Smaller; leaves small, ovate-triangular, 

 lender-petioled, often truncate at the base, about 6 cm. long by 5 cm. wide, sometimes 

 one of them cordate ; glands fewer; pubescence subpilose or velvety ; bracts broad, flat, 

 ;h; reen ; rays violet or blue. In grassy woods and thickets, especially in mountainous 

 i;t jgions, Me. to Minn, and \V. Va. 



Aster macrophyllus sejunctus Burgess. Strigose-pubescent; glands numerous; leaves 



pple-green above, pale beneath, chiefly cordate-orbicular, abruptly short-acuminate, 



lick, spongy, commonly minutely wrinkled : basal leaves few ; bracts narrow, obtuse ; 



' f eduncles slender; inflorescence dense, convex, 1-2 dm. broad, not leafy ; rays lilac. In 



- e ' pen grassy places. Me. to Penn. and Wis. 



Aster macrophyllus apricensis Burgess. Glabrate, deeply branched, the branches 

 v umerous, often 45 cm. high ; rays short, pinkish lavender ; leaves broad, oval to ovate, 

 i> ae teeth and sinus little developed ; petioles often expanded into a long wing, sometimes 



