108 ENGLISH BOTANY. 
unequal, with broad scarious margins, glabrous. Florets of the 
disk pale-yellow, perfect ; those of the ray erect, linear, ligulate, 
female, white or flesh-colour, scarcely exceeding the pericline or 
pappus. Achenes pubescent, shorter than the pappus. Pappus 
yellowish-white. Plant sub-glabrous or sparingly hairy. 
In waste places and newly -turned and cultivated ground. 
Local. Plentiful near London, and sparing and rather uncertain 
in its occurrence in other parts of England. Introduced from 
North America. 
[England.] Annual. Late Summer and Autumn. 
Stem stiff, erect, 6 inches to 3 feet high, copiously branched 
with short erect-ascending lateral branches. Leaves very narrow ; 
the lower ones usually shallowly serrated, the upper ones mostly 
entire. Anthodes very numerous, small, longer than broad. Peri- 
cline {r inch long ; phyllaries reflexed after the fall of the achenes. 
Ray inconspicuous. Achenes whitish. Plant green, sub-glabrous, 
with the edges of the leaves ciliated with short incurved hairs seated 
on small tubercles. 
Canadian Fleabane. 
French, Venjerette du Canada. German, Canadisclie Durrwurz. 
Tlie English name of this species is due to its reputed power, when burned, of 
destroying fleas. According to M. Losanne, in a paper read to the Agricultural 
Society of Turin, tlie bark of the plant, after having undergone the process of soaking, 
luay be made into excellent paper. 
SPECIES II— E RIG E RON ACRIS. Linn. 
Tlate DCCLXX1V. 
Reich. Ic. Fl. Germ, et Helv. Vol. XVI. Tab. CMXVII. Fig. 2. 
/•'//of, Fl. Gall, et Germ. Exsicc. No. 301. 
Annual or biennial. Stem paniculately branched. Radical 
Leaves oblanccolate, stalked, entire, apiculate ; stem -leaves nu- 
merous, sessile and semi - amplexicaul, oblong - strapshaped. 
Anthodes racemose along the stem and branches, or corymbose 
in small examples. Peduncles simple or nearly so, hairy, not 
glandular. Pericline oblong-cylindrical ; phyllaries adpressed, not I 
glandular, linear-subulate, glabrous, iiorets of the disk yellow, 
centra] ones perfect, outer ones female ; those of the ray erect, 
narrowly-linear, ligulate, female, purple, longer than the pericline, 
and sometimes exceeding the pappus. Pappus reddish-white or 
white. Plant hairv. 
