L. Lesquereux on Fossil Plants of Recent Formations. 365 
swamps of Louisiana. . 
_ 5. Prinos integrifolia (Ell.). “Two leaves of this species were found 
inthe chalk banks, They agree in every point with the Prinos still liv- 
ing in Florida, 
6. Ceanothus! Americanus ? (L.), To this very variable and common 
‘pecies, I refer with some doubt two leaves, one large, regularly ovate- 
obtuse, 2 somewhat decurrent margins, the other oval-lanceolate, we 
and agree with C. americanus. . ; 
1. Carya oliveformis (Nutt.). “Pecan. Fruit and leaves in s ens. 
The 8eographical habitat of this species is still the same as of 0 ‘ 
8. Gleditschia triacanthos (L.). A few detached leaflets evidently be- 
Sing to the Locust. 
9. Acorus calamus (L.). Part of a broken leaf. 
10. Some undeterminable catkins of Alnus or Betula, 
ble to the lower or middle Pliocene 
ihe above, we ar struck with the remarkable char- 
acter of the Mideéata Sencut Oregon and Vancouver sland 
hich evidently indicates a tropical climate at this period of the 
logical formations. Palm ro- 
ile are now generally distributed at least 
80 
tila t th h 
Tmity in the direction of the isothermal lines at the epoc 
°F the Miocene formation, and establishes beyond a doubt that 
