
POLYGAMIA, SUPERFLUA. 
stem weak, simple, corymbose above; pedun- 
cles elongated, one-flowered; rays capillary, 
. twice the length of the hemispherical calix.— 
Willd., Mich., and Pursh. 
Icon. Bart. Veg. Mat. Med. U. S. vol. 1. t. 
20. 
Scabious. Philadelphia Flea-bane. 
From two to three feet high. Flowers white or pale blue. 
Possesses medicinal virtues, and on this account is valuable. 
(See Veg. Mat. Med. U. S.) In cultivated fields, every where 
in the greatest profusion. Perennial August, September. 
107 
3. E. radical leaves subrotund-ovate. deeply den- heterophy!- 
tate, petiolate; those of the stem lanceolate- 
acute, serrate in the middle; corymb terminal. 
—Wilid. Sp. Pl. 5. p. 1956. 
Aster annuus, L. and Willd. Sp. Pl. 3. p. 2041. 
Icon. Bart. Veg. Mat. Med. U. S. vol. 1. t. 21. 
Sweet Seabious. Various-leaved Flea-bane. 
This species resembles No. 2, somewhat, in flowers and 
habit. It differs however, strikingly, in its leaves, especially 
the lower and radical ones. The general likeness of one to 
the other, has caused them to be collected promiscuously for 
medicinal purposes; thus accidentally leading me to ascertain 
that this species is medicinal, like the preceding. (See Veg. 
Mat. Med. U. S.) About three feet high. Flowers purplish 
(rays). In cultivated fields with No. 2, but not so abundant. 
Along water-courses, among grass; frequent. Biennial. June, 
August. 
ma. 
4. E. stem hispid-paniculate, very much branch- canadense. 
ed; leaves lanceolate-linear, ciliate ; calices cy- 
lindrical, rays crowded, very short.—/Viild. 
and Pursh. 
Icon. Trans. Physico-Medical Society, New- 
York, vol. 1. p. 49. . 
This is one of the most noxious weeds of our country, and 
has s been introduced. It varies from six inches to four 
feet in height. The smallest variety Mr. Nuttall considers a 
distinct species—for the present I add it below as a variety 
