GENUS 31. 
Slender or 
Fig. 4330. 
1818. 
Stem slender, finely puberulent and sca- 
brous, corymbosely branched above, 1°-14° 
high. Leaves minutely scabrous, the basal 
and lower ones oval, acute or obtusish, 2’-3’ 
long, 4’-8” wide, dentate, narrowed into 
slender petioles; upper leaves linear, linear- 
oblong, or slightly oblanceolate, acute, en- 
tire, sessile or a little clasping; heads usu- 
ally numerous, 6-10" broad; involucre 
narrowly turbinate, its bracts coriaceous, 
glabrous or very nearly so, imbricated in 
about 5 series, their tips green and spread- 
ing, obtusish; rays 9-15, violet, 3-43” long; 
pappus nearly white; achenes minutely pu- 
bescent. 
49. Aster gracilis Nutt. 
Tuber Aster. 
Aster gracilis Nutt. Gen. 2: 158. 
In dry sandy soil, New Jersey to Kentucky, 
Tennessee and South Carolina. Rootstock 
tuberous-thickened. July—Sept. 
Zs 
JPN, 
51. Aster Hérveyi A. Gray. Hervey’s 
Aster. Fig. 4332. 
Aster Herveyi A. Gray, Man. Ed. 5, 229. 1867. 
Stem roughish, at least above, slender, simple 
or corymbosely branched, rarely paniculate, 1°-3° 
Leaves 
firm, rough above, pubescent on the veins beneath, 
the basal and lower ones on slender naked peti- 
oles, ovate, dentate with low usually distant teeth, 
acute at the apex, narrowed, rounded or rarely 
cordate at the base, 2’-6’ long, 1’-3’ wide; upper 
leaves sessile, or narrowed into winged petioles, 
smaller, entire or nearly so; heads 1-13’ broad; 
involucre turbinate or campanulate, its bracts ap- 
pressed, or sometimes spreading, densely glandu- 
lar, oblong or spatulate, obtuse or mucronulate; 
rays 15-25, violet, 5’-7” long; achenes minutely 
high, the branches glandular-puberulent. 
pubescent, striate; pappus nearly white. 
In dry soil, eastern Massachusetts, Rhode Island, 
Connecticut and Long Island. Aug.—Oct. 
THISTLE FAMILY. 
425 
50. Aster Radula Ait. Low Rough Aster. 
File-blade Aster. Fig. 4331. 
Aster Radula Ait. Hort. Kew. 3: 210. 1789. 
Aster biflorus Michx. Fl. Bor. Am. 2: 114. 1803. 
Aster strictus Pursh, Fl. Am. Sept. 556. 1814. 
Aster Radula var. strictus A. Gray, Syn. Fl. 1: Part 
2,176. 1884. 
Aster Radula biflorus Porter, Mem. Torr. Club 5: 
326. 1894. 
Stem glabrous, or puberulent above, slender, 
corymbosely branched near the summit, or sim- 
ple, 4’-2° high. Leaves sessile, rough above, 
more or less pubescent beneath, lanceolate to 
oblong-lanceolate, acute, sharply serrate, strong- 
ly pinnately veined, 2-3’ long, 3’-12” wide; 
heads several, or sometimes numerous, 1’-13" 
broad; involucre hemispheric, its bracts oblong 
or oblong-spatulate, coriaceous, appressed-pu- 
bescent, conspicuously ciliolate, their green ob- 
tuse or acutish tips very little spreading; rays 
20-30, violet, 4”-6” long; achenes glabrous, 
striate; pappus nearly white. 
In swamps, Newfoundland to Delaware, Penn- 
sylvania, Maryland and West Virginia. July—Sept. 
