666 COMPOSITAE 
white or tinged with violet. Low grounds, throughout most of our range. 
Aug.-Oct. 
46.. A. Tradescanti, L. (Fig. 1. pl. 184.) Micnartmas Daisy. Stem 
branched, 2 to 5 ft. high. Leaves linear or narrow lance-shaped, the lower 
toothed at margins, the upper nearly or quite entire. Heads very numer- 
ous; rays white or purplish, short, the head being about 3 in. broad. 
Scales linear, acute, Fields and swamps, throughout our range. Aug.- 
Oct. 
47. A. ericoides, L. (Fig. 5, pl. 183.) Wire Heath Aster. Frost- 
WEED ASTER. Smooth, stem 1 to 3 ft. high, branched above. Upper 
leaves linear or awl-shaped, firm, rigid, } to ? in. long. Heads very numer- 
ous, small, 4 in. broad. Rays white. Dry soil, in all our area. Sept.-Dec. 
48. A. Pringlei, (A. Gray) Britton. (Fig. 4, pl. 184.) Prine e’s 
AsTER. Stem higher than the last. Basal leaves long lance-shaped to 
spatula-form. Heads usually smaller than No. 47. Rocky places, Mass., 
Vermont, and westward. Aug.-Oct. Regarded as variety of A. ericoides 
by Dr. Gray. 
49. A. hirsuticaulis, Lindl. (Fig. 5, pl. 184.) Harry-stemMeEp ASTER. 
Stem erect, slender, 14 to 3 ft. high, notably downy, branches short. Leaves 
linear lance-shaped, the lower about 6 in. long by } in. wide, the margins 
toothed, the upper, smaller leaves with entire margins. Heads somewhat 
but usually not notably one-sided, clustered along the stem; rays white. 
Woods, New York, Penna., and southward. Aug.-Oct. 
2. Inflorescence largely Unilateral (Secund) 
50. A. lateriflorus, (L.) Britton. (Fig. 4, pl. 183.) StTarvep ASTER. 
Much branched, more or less downy; stem 1 to 5 ft. high. Leaves broad 
lance-shaped, tapering at each end, the margins toothed, 2 to 5 in. long. 
Heads numerous, forming short dense clusters along the branches; rays 
white or purplish; disk flowers purple; scales of the involucre linear, over- 
lapping in 3 or 4 rows. Thickets and fields, in all our range. Aug.-Oct. 
51. A. vimineus, Lam. (Fig. 3, pl. 183.) Smartt Waite Aster. 
Much branching, 2 to 5 ft. high, smooth. Leaves linear, the lower some- 
what dentate with low teeth. Heads very numerous, crowded upon the 
spreading branches, largely unilateral. Rays numerous, white; scales 
linear, acute. Moist soil. Common. Aug.-Sept. 
52. A. multiflorus, Ait. (Fig. 1, pl. 183.) Wirt WreatH ASTER. 
DENSE-FLOWERED AstEeR. Stem erect, but freely branching, bushy, covered 
with a whitish down. Leaves rigid, linear, not toothed, somewhat clasp- 
ing at base. Heads densely crowded along the spreading, more or less 
one-sided, branches; rays 10 to 20, white or bluish. Dry fields, in all our 
area. Aug.-Nov. 
15. ERIGERON, L. 
Herbs with alternate or basal leaves, with 1 to many heads, with disk 
and ray florets, the latter white or colored, never yellow (rarely the heads 
are without ray florets). Involucre of nearly equal, narrow bracts nearly 
in one row; receptacle flat or convex, naked. Anthers without tails at 
the base, obtuse at apex. Aigrette of a single row of fragile bristles. 
