POLYANDRIA MONOGYNIA. Tilia. 
2. T. foliis cordatis sensim acuminatis rariter dentatis mem- 
branaceis glabris, paniculis laxifioris, petalis emargi- 
natis, stylo petalis longiore, nuce globosa.— Mich.jl. 
amer. 1 . p. 306. 
Icon. Mich. arb. t 
Near the sea- coast : Maryland to Georgia. Tj . May, 
June. v. v. s. jl. A very distinct species, though 
generally confounded with the foregoing one. 
3. T. foliis basi truncatis obliquis acuminatis denticulato- 
serratis subtus pubescentibus, paniculis confertifioris, 
petalis emarginatis, stylo petalis subasquali, nuce glo- 
bosa laevi. — Vent, in mem. de 1'instit. sc. phys. 4. p. 10. 
t. 3. Willd. sp pl. 2 p. 1 1(52. 
T. caroliniana. Mill. diet. no. 4. 
T. americana. Walt jl car. 153. Wangh. amer. 55. 
j8. T foliis laxe serratis tenuissimis subpapyraceis. Vent, 
l.c.p. U. 
In close copses and on the banks of rivers : Virginia to 
Georgia. Jj . May — July. v. v. The variety /3. 
can scarcely be considered a distinct species, unless the 
flowers and fruit should prove it so, both of which I 
have not seen. 
4. T. foliis ovatis basi oblique aut aequaliter truncatis cor- 
datisque argute serratis subtus niveo- tomentosis, nuce 
globosa subcostata. Vent l. c. p. 16 . t. 5. 
On the banks of the Ohio and Mississippi. 1? . June, 
v . s. A very handsome and desirable ornamental tree, 
425. HELXANTHEMUM. Juss. gen. pl. 326. 
Cisti spec. Gen. pl. g 13. 
1. H. exstipulatum, erectum ; foliis alternis erectis lineari- 
lanceolatis planis subtus tomentosis, racemis termina- 
libus pauci floris, calycis laciniislato-ovatis acuminatis, 
capsulis calyce brevioribus. — Willd. sp. pl. 2. p. l\gg. 
sub Cisio. 
In dry fields and pine woods : Canada to Carolina. 1 /, 
June. v. v . Flowers, as in all the following species, 
yellow. 
2. H. exstipulatum, erectum, pulverulento-tomentosum j 
foliis alternis oblongis acutis margine revolutis subtus 
tomentosis, racemis brevissimis, summitate subtriflo- 
ris, calyc'»s laciniis orbiculatis pulverulentis, capsulis 
globosis longitudine calycis. — Mich. jl. amer. 1 . 
p.307. 
363 
laxijlora . 
pubescens . 
leptophylla. 
heterophylla . 
canadense . 
ramuliflorum. 
