242 7. Populus. 4. SALICINiE. PI. ex. mom 



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 majny ; 

 stigmata 4, sessile ; capsule 2-celled, 2-valved ; seeds comose, 

 radicle above. 



a. Turions lomentose or hairy; stamens 8. Populus. 



1. Populus alba. White poplar. 

 Leaves heartshape, roundish, lobed, toothed; beneath 



tomentose, snow-white ; ament ovate, oblong. 



Populus alba, Raii Syn. 446, 2 ; Ger. em. 1488. 

 Populus alba nivea, Aitun Hort. Kew. 3, 403. 

 Populus major. Miller Diet. ed. 8,4. 

 Populus nivea, Willd. Baumz. 227. 

 jibele. 



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 minoribus, Raii Syn, 446, 2* ; Ger. tm. 1487 



Populus alba, Mill. Diet, ed.8, 1. 



Populus alba canescens, Alton Hort. Kew. 3, 405. 



Populus nigra, Mill. Illustr. 90. 



Populus canescens, Smith Fl. Brit. 3, 1080. 



River-sides; tree; March. 



Hoots widely creeping ; branches ascending ; leaves above 

 light green, bald ; beneath tomentose, woolly, greyish ; 

 sometimes rather smooth ; stipules linear, falcat©) toothed ; 

 ament 2 in. long. 



3. Populus tremida. Trembling poplar. 

 Leaves nearly orbiculate, toothed, both sides smooth : 



ament oblong. 



Populus Lybica, Raii Syn. 446, 3 j Ger. em. 1487. 

 Populus tremula, Lin. S. P. 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. 



