418 COMPOSITAE. Vor. ILI. 
28. Aster nebraskénsis Britton. Nebraska 
Aster. Fig. 4309. 
Aster nebraskensis Britton, in Britt. & Brown, III. Fl. 
32375. 1898, 
Stem strictly erect, slender, stiff, rough to the 
base, simple, or with a few short nearly erect 
branches, very leafy, 13°-23° tall. Leaves thick, 
rather rigid, ascending, lanceolate to oblong- 
lanceolate, entire, sessile by a subcordate base, 
acute or acuminate at the apex, 1’-3’ long, 4”-6” 
wide, very rough on both sides, the midvein 
prominent beneath, the lateral veins obscure; 
heads few, terminating short leafy branchlets, 
1’-1#’ broad; involucre broadly campanulate or 
hemispheric, about 3” high, its bracts green, ob- 
long, acute, imbricated in several series, the outer 
quite foliaceous; rays purple, about 6” long. 
Lake shores, central Nebraska. Sept. Lower and 
basal leaves not seen. 
2g. Aster amethystinus Nutt. Amethyst 
Aster. Fig. 4310. 
Aster amethystinus Nutt. Trans. Am. Phil. Soc. (II) 7: 
294. 1841. 
Resembles Aster novae-angliae, but is often taller, 
sometimes 5° high. Leaves often crowded, linear- 
lanceolate, entire, rough or hispidulous on both sides, 
partly clasping, though sometimes slightly so, at the 
sessile base, acute at the apex, those of the stem 
1-2’ long, 2’-3” wide; heads rather numerous, race- 
mose or corymbose, 4’-1’ broad; involucre broadly 
turbinate, its bracts much imbricated, linear, hispid, 
not glandular, the acutish green tips spreading; rays 
20-30, blue or violet, about 3” long; pappus brown; 
achenes canescent. 
In moist soil, Vermont and Massachusetts to New 
York, Pennsylvania, Illinois, lowa and Nebraska. Sept.— 
Oct. Specimens have intermediate characters between 
Aster novae-angliae L. and Aster multiforus L., and 
hybridism is suspected. 
30. Aster modéstus Lindl. Great Northern 
Aster. Fig. 4311. 
eee unalaschensis var. major Hook. Fl. Bor. Am. 2: 7. 
I fs 
Buck wadesns Lindl. ; Hook. loc. cit. 8. 1834. 
Aster majus Porter, Mem. Torr. Club 5: 325. 1804. 
Stem stout, leafy to the summit, usually densely 
pilose-pubescent with many-celled hairs, rarely gla- 
brate, branched above, 4°-6° high. Leaves mem- 
branous, lanceolate, partly clasping by a narrowed 
base, acuminate at the apex, sharply serrate with 
low, distant teeth, dark green and slightly pubes- 
cent above, villous-pubescent on the veins beneath, 
3-5’ long, 5’-10” wide; heads mostly solitary at 
the ends of short branches, 13’ broad; involucre 
hemispheric, its bracts little imbricated, green, 
linear-subulate, densely glandular; rays 35-45, pur- 
ple to violet, 5”-7’ long; achenes appressed-pubes- 
cent; pappus tawny. 
In moist soil, western Ontario to Minnesota, Oregon” 
and British Columbia. Sept.—Oct. 
