syngenesia superflua. Tanacelum. -523 
In cultivated grounds and on road sides : New England 
to Pensylvania. 1/. July— Sept. v. v. Common 
Tansy is probably introduced from Europe. 
623. BACCHARIS. Gen. pi. 12S5. 
j, B. glaberrima, paniculato-ramosissima ; foliis angusto- angustifolia 
linearibus integerrimis, panicula composita multiflora, 
calycibus parvulis sub-20-floris. — Mich. fil. amer . 2. 
p. 12 5. 
On the sea-coast : Carolina to Florida ; on the banks of 
the Mississippi. M. Lewis, . July — Sept. v. v . ; 
v . s. in Herb. Lewis. Flowers white, as all the fol- 
lowing are. 
2. B. foliis laevibus cuneato-obovalibus superne dentatis t glomeruliflo- 
glomerulis florum axillaribus sessilibus remotis, squa- ra. 
mis calycinis superne runs. — Mick. fi. amer. 2- 
p. 125. 
In woods, on the coast of Virginia and Carolina. Tj * 
Aug. — Oct. v. v. Resembles the following. 
3. B. foliis obovatis superne inciso-dentatls, panicula com- halimifiolia » 
posita foliosa, fasciculis pedunculatis. — Willd. sp. pi. 3. 
p. 1915. 
Icon. Schmidt arb. 82. Herm. parad. 225. Pink. aim. 
t. 27.fi. 2. 
On the sea-coast : Maryland to Florida, . Sept. — 
Nov. v. v. The whole shrub is covered with a 
white powder. 
624. CONYZA. Gen. pi. 128 6. 
1. C. herbacea, pubescens; foliis sessilibus !ato-lunceolatis marylandica ? 
acutis serratis : serraturis apice cartilagineis, corymbis 
terminalibus fastigiatis coarctatis subaphyllis, calycinis 
squamis subulato- mucronatis flosculis brevioribus.— 
Mich.Jl. amer. 2. p. 126. exclus. syn. Walteri. 
Erigeron camphoratum. Willd. sp. pl, 3. p. i960. 
Icon. Dill. elth. t. 88.fi. 104. 
In overflowed places, near rivers and ponds : New York 
to Carolina. ©. Aug. — Oct. v. v. About a foot 
high; flowers reddish-purple ; the whole plant emits 
a strong scent of camphor, only more disagreeable. 
2. C. herbacea, subpubescens ; foliis petiolatis ovato-lanceo- camphorata , 
latis acutissimis subrepando-denticulatis : denticulis 
