PI. ex. mon • 
242 7. Populus. 4. SALICINAS. 
II. 7. POPULUS. Pliny. Poplar . 
Flowers dioicous ; ament scaly; scales oblong, loose, imbri- 
cate; edges torn; perigonium tubular, obliquely truncated, 
on the base of the scale : — Male, Stamens 8 to 20 • 
Female, Ovary 1, ovate, pointed, inverted; ovules many; 
stigmata 4, sessile ; capsule 2-celled, 2-valved ; seeds comose, 
radicle above. 
a. Turions tomentose or hairy; stamens 8. Populus. 
1 . Populus alia . White poplar . 
Leaves heartshape, roundish, lobed, toothed; beneath 
tomentose, snow-white ; ament ovate, oblong. 
Populus alba, Raiijiyn. 446, 2 ; Ger. em. 1486. 
Populus alba nivea, Alton Hort. Keiv. 3, 403. 
Populus major, Miller Diet. ed. 8, 4. 
Populus nivea, Willd. Baumz. 221. 
Abele . 
Damp woods ; tree ; March. 
Branches horizontal ; leaves above, black green, beneath 
very densely woolly ; petiole one-third as long as the leaf ; 
stipules lanceolate, obsoletely toothed; ament an inch long. 
2 . Populus canescens . Grey poplar. 
Leaves roundish, angularly repand, toothed; beneath 
tomentose, hairy ; ament cylindrical, long, loose. 
Populus alba foliis tninoribus. Rail Syn. 446, 2* ; Ger. em. 1487 
Populus alba, Mill. Diet. ed. 8, 1. 
Populus alba canescens, Alton Hort. Keio. 3, 405. 
Populus nigra, Mill. Illustr. 90. 
Populus canescens, Smith FI. Brit. 3, 1080. 
River-sides; tree; March. 
Roots widely creeping ; branches ascending ; leaves above 
light green, bald ; beneath tomentose, woolly, greyish ; 
sometimes rather smooth ; stipules linear, falcate^ toothed ; 
ament 2 in. long. 
3 . Populus tremula. Trembling poplar , 
Leaves nearly orbiculate, toothed, both sides smooth; 
ament oblong. 
Populus Lybica, Raii Syn. 446, 3 ; Ger. em. 1487. 
Populus tremula, Lin . S. F. 1464. 
Asp. Aspen. 
Damp woods; tree; March and April. 
Tree tall; small branches smooth; turions hairy; leaves 
tremulous ; stipules bristlelike ; aments 2 in, long, hairy. 
