340 
syn genes u suferflua. 
ASTER. Gen. Pl. 1291. 
Involucruvi imbrica- 
turn, squamis inferiori- 
bus patulis. Corollulce 
radii plures 10 (rarissi- 
me pauciores.) Pap- 
pus simplex, pilosus. 
Receptaculum nudum. 
Involucrum imbri- 
cate, with the lower 
scales expanding. Flo. 
rets of the ray gene- 
rally more than 10. 
Pappus simple, hairy. 
Receptacle naked. 
* Involucris albis 
apice viridibus; corol- 
lulis radii 5, albis. 
* Scales of the invo- 
lucrum white, with; the 
summits green ; florets 
of the ray 5, white . 
1. SoLIDAGINOIDES. Mich. 
A? foliis lineari-lan- 
ceolatis, integerrimis, 
margine scabris; flori- 
bus sessilibus,aggrega- 
tis; involucris imbrica- 
tis, squamis obtusis, 
appressis. 
Leaves linear-lance" 
olate, entire, scabrous 
along the margin; flow- 
ers sessile, aggregate; 
involucrum imbricate, 
with the scales obtuse, 
appressed. 
Sp. pl. 3. p. 2024. Pursh, 2« p. 543. Nutt. 2. p. 
Aster Solidagineus. Mich. 2. p. 108. 
Conyza Linifolia. Walt. p. 204. 
Root perennial. Stem about two feet high, slightly angled, glabrous. 
Leaves , as in all of this genus alternate, sessile, two to three inches long, 
almost linear, obscurely three-rierved. Flowers in small clusters at the sum- 
mits of the branches, forming a fastigiate corymb. Involucrum cylindrical, 
scales obtuse, with the green summits slightly reflected. Florets of the ray 
generally five, narrow, twice as long as the involucrum, of the disk twelve 
to fifteen, white, longer than the involucrum. Stamens about as long as the 
corolla. Style scarcely longer than the stamens, two-cleft. Seeds oblong, 
slightly angled, covered with a silken pubescence. Receptacle naked. 
Grows in damp rich Soils. 
Flowers July — September. 
