190 
FIFTEENTH REPORT. 
440. Aster Novae-Belgii (Liu.) (?) Aster. 
Swamps. Frequent. 
441. Aster paniculatus, Lam. Aster. 
Swamps. Common. 
442. Aster paniculatus, Lam., Var. bellidifolius, (Willd.) Burgess. 
Aster. 
Swamps. Frequent. 
443. Aster paniculatus, Lam.. Var. simplex (Willd) Burgess. Aster. 
Swamps. Occasional. 
444. Aster puniceus, Lin. Aster. 
Swamps. Common. 
445. Aster sagittifolius, Willd. Aster. 
Dry, sandy hills. Frequent. 
440. Erigeron annuus (Lin.) Pers. Fleabane. 
Low grounds. Common. 
447. Erigeron Canadensis, Lin. Fleabane. 
Sandy fields. Common. 
The leaf is a commercial drug and is employed as a diuretic 
and astringent in dropsy, diarrhoea, etc. 
448. Erigeron Philadelphicus, Lin. Fleabane. 
Low grounds. Common. 
440. Erigeron ramosus (Walt.) B. S. P. Fleabane. 
Dry grounds. Common. 
450. Antennaria ambigens (Greene) Fernald. Everlasting. 
Fields. Common. 
451. Antennaria bifrons, Greene. Everlasting. 
Fields. Common. 
452. Antennaria mesochora. Greene. Everlasting. 
Fields. Common. 
453. Gnaphalium obtusifolium. Lin. Life-everlasting. 
Swamps. Common. 
A commercial drug and employed as a tonic, diaphoretic and 
astringent in fevers, diarrhoea, etc. 
454. Ambrosia elatior, Lin. Ragweed. 
All the leaves bipinnatified. 
455. Ambrosia elatior Lin., Var. artemisiifolia, (Lin.) Ragweed. 
A. artemisiifolia Lin. Sp. PL, 088, 1753. 
The uppermost leaves of branches and ’stems undivided, other- 
wise as in the type. 
456. Ambrosia elatior, Lin., Var. heterophvlla (Muhl.) Ragweed. 
A. lietcrophylla Muhl., Willd. Sp. PI. IV. 378, 1805. 
The lower leaves pinnatified, the upper undivided or with one 
or two lobes near the base. This form is more inclined to have 
the staminate inflorescence abnormally converted into a pistillate 
inflorescence. All the forms are more or less common in waste 
and cultivated fields. 
The leaves and staminate flowers of this species are commer- 
cial drugs; the former is an astringent employed as an applica- 
tion to sores, wounds, etc, ; the latter is employed in the treatment 
of hay-fever. 
457. Ileliopsis scabra. Dun. Ox-eye. 
Swamps. Common. 
