406 DIOECTA OCTANDRYIA. Populus. 
dilatate. 4 P. foliis utrinque glabris acuminatis ferratis deltoidi- 
; ? bus: diametro tranfverfali longiore, 
Lombardy, or Po Poplar Tree. 
Nat. of Italy. 
Introd, about 1758, by the Earl of Rochford. 
Fl. March and April, Heb. 
balfami- 5. P. foliis ovatis ferratis fubtus albidis, ftipulis refinofis. 
fera. Sy/?. veget. 889. Pallas roff. 67. tab. 4. 
: Common Tacamahac Poplar Tree. 
Nat. of North America and Siberia. 
Introd. 1731. AGI. ic.174. t.261. 
Fi, April, Ere te eee 
candi- 6, P. foliis cordatis acuminatis fubtus albidis fubtripli- 
Pie nerviis, f{tipulis refinofis, ramis teretibus, 
Heart-leav’d Tacamahac Poplar Tree, 
Nat. of Canada. 
Introd. about 1772, by John Hope, M, D. 
Fl, March, _. Hh 
levigata, 7.P, foliis erties trinerviis glabris bafi glandulofis inz- 
' qualiter ferratis, petiolis compreffis, ramis teretibus, 
Smooth Poplar Tree. 
Nat. of North America. 
Cult. 1769, by Hugh Duke of Northumberland. » 
Fi, March and April, | a 
monilifee  §, P. foliis fubcordatis glabris bafi glandulofis: ferraturis 
ag: _ ¢artilagineis hamatis piloftufculis 5 3 nervis patulis, 
peticlis compreffis, ramis teretibus, 
Canadian Poplar Tyee, 
- Nat. of Canada. 
Introd. about 1772, by John Hope, M.D. 
Mi May Hb. 
9. P,- 
