412 



COMPOSITAE. 



VOL. III. 



10. Aster roscidus Burgess. Dewy-leaf 

 Aster. Fig. 4291. 



Aster roscidus Burgess ; Britt. & Brown, 111. Fl. 3 : 

 360. 1898. 



Clammy-hairy, odorous, copiously glandular 

 when young, somewhat so at maturity; stem 3 

 high, or less. Basal leaves in close colonies, co- 

 riaceous, the earlier ones cordate-quadrate, low- 

 serrate, the sinus deep, narrow, the later, or 

 winter leaves, elliptic, long-petioled, often pros- 

 trate, often 5' long; stem leaves chiefly orbicular 

 and not cordate, with short broadly winged 

 petioles, rarely slender-petioled ; inflorescence 

 convex, sometimes irregular ; involucre hemi- 

 spheric, its bracts chiefly with rounded ciliate 

 tips; rays 14-16, broad, clear violet; disks at first 

 golden yellow, soon turning red; pappus long, 

 white, copious. 



In slight shade and rich cleared woodlands, Maine 

 to Pennsylvania and Michigan. Aug.-Sept. 



ii. Aster ianthinus Burgess. Violet Wood 

 Aster. Fig. 4292. 



Aster ianthinus Burgess ; Britt. & Brown, 111. Fl. 3 : 360. 

 1898. 



Glandular, dark green, slightly strigose-pubescent ; 

 stem erect, or decumbent, 2-3 tall. Leaves thin- 

 nish, rough, the lower and basal ones orbicular to 

 oblong, 5' long, or less, abruptly acuminate, low- 

 serrate or crenate ; the sinus broad, open, shallow, 

 upper leaves sessile by a narrowed base, crenate- 

 serrate; inflorescence open, nearly naked, peduncles 

 slender, divergent; heads large; rays 10-13, long, 

 very deep violet or .sometimes pale, 4"-6" long; 

 bracts green-tipped, little pubescent. 



On shaded banks and along woodland paths, Maine 

 to Lake Erie and West Virginia. July-Oct. 



12. Aster violaris Burgess. Violet-leaf Aster. 

 Fig. 4293. 



Aster violaris Burgess; Britt. & Brown, 111. Fl. 3: 361. 

 1898. 



Caudex thick, fleshy; plant glabrate, bluish green, 

 minutely glandular; stem slender, erect, or assur- 

 gent, 2 high, or less. Basal and lower leaves broadly 

 reniform, abruptly acuminate or apiculate, often 3' 

 long by 4' wide, their slender petioles 6'-8' long, the 

 sinus very broad and shallow; middle stem leaves 

 similar, not cordate; the upper numerous, long- 

 elliptic, chiefly with narrowed bases, all thin, firm, 

 rough above; inflorescence leafy, small, loose, rather 

 narrow and high, paniculate-corymbose, nearly level- 

 topped, its slender branches with nearly opposite, 

 oblong leaves; heads 6" high, or more; rays 12-15, 

 pale violet, narrow. 



In shaded moist places, sometimes in leaf-mold among 

 rocks, New York from the Hudson to Lake Erie. Sept.- 

 Oct. 



