370 SALICINE^. [PopULUS. 



Copses, &c., N. to Orkney, indigenous, more often planted ; ascends to 1,600 

 ft. in Yorkshire ; Ireland ; Channel Islands ; fl. March-April. Erect, 40-80 

 ft., short-lived. Bark gray, wood white ; suckers many, pubescent ; branches 

 spreading ; buds pubescent. Leaves 1-4 in., old obtuse, young acute, cottony 

 beneath ; petiole very long, slender, glabrous, compressed. Catkins 2-3 in., 

 cylindric ; scales laciniate. VARS. villo'sa and gla'bra, have respectively 

 villous and subglabrous foliage. DISTRIB. Europe (Arctic), N. Africa, 

 N. Asia. Wood indifferent. 



SECTION" 2. Aigei'ros. Young shoots glabrous. Fruiting catkins lax ; 

 scales subglabrous. Stamens 8-30. Stigmas 2-fid, short, cuneate. 



P. NI'GRA, L. ; buds viscid, leaves rhombic deltoid or suborbicular 

 finely crenate-serrate at length glabrous. Black Poplar. 

 Moist places, river-banks, &c., not indigenous; fl. April. Erect, 50-60 ft., 

 short-lived, growth rapid. Bark grey ; wood soft, white ; branches spread- 

 ing. Leaves 1-4 in., angles rounded, acuminate, young silky beneath and 

 ciliate ; petiole slender, compressed. Male catkin 2-3 in., cylindric ; female 

 shorter, ascending, peduncle curved in fruit ; scales shortly cut. Stamen* 

 12-20 ; anthers purple. Capsules grin., ovoid, pedicelled, recurved. DISTRIB. 

 Europe, N. Asia. Wood light, mucli i^sed for carving, charcoal, &c. ; bark 

 for tanning. 



2. SA'JLIX, Tournef. WILLOW. 



Trees or shrubs. Leaves quite entire or serrate ; stipules persistent or 

 deciduous. Stamens 2 or more, filaments free or connate. Catkins usually 

 erect ; scales entire. Disk of 12 distinct glands. Stigmas entire or 2-fid. 

 DISTRIB. Of the Order ; species 160. ETYM. The Latin name. For the 

 species of this troublesome genus I have followed Andersson (in D.C. 

 Prodr. XVI. part 2), and for the vars., principally Syme. 



SECTION 1. Catkins on short peduncles that bear fully developed 

 leaves ; scales pale, persistent or deciduous. Filaments hairy below, all 

 free. Capsule glabrous in the British species. 



* Stamens 3 or more, free. Petiole glandular at the top. Capsule pedicelled. 

 1. S. trian'dra, L. ; leaves linear- or oblong-lanceolate acuminate glan- 

 dular-serrate glabrous paler or glaucous beneath, disk of the male flower 

 2-glandular, stamens 3. Almond-leaved or French Willow. 

 River-banks and osier-grounds from Perth southd. ; doubtfully native of 

 Scotland and Ireland ; fl. April-June. A tree, 20 ft., bark flaking. Leaves 

 2-4 in., base broad or narrow ; stipules large, ^-cordate. Catkins 1-2 in., 

 appearing with the leaves, slender, female narrower ; scales nearly glabrous. 

 Capsule small, terete or furrowed, glabrous ; style thick, short. DISTRIB. 

 Europe (Arctic), N. Asia. 



S. trian'dra proper (S. amygdali'na, L.) ; leaves more linear narrow glaucous 

 beneath. VAR. S. Hoffmannia'na, Sm. ; leaves broader at the base green 

 beneath. S. contor'ta,* Crowe, is a var. cultivated in Snssex. S. undida'ta, 

 Ehrh. (S. lanceola'ta, Sm.), distinguished from S. trian'dra by its shaggy 

 scales and distinctly developed style, is commonly cultivated for basket- 



