] 546

ARBORETUM AND FRUTICETUM.

PART III.

barren as well as fertile individuals, of both species, agreeing exactly togetherin other respects, and differing alike from correlative ones of the other spe-cies, are now well known. In size and general habit, this most resemblesS. glauca; but their discriminative marks are clearly discernible. The leavesof S. areniiria are rather smaller and shorter, more precisely ovate, with alittle sharp point; their upper surface dark green, reticulated with sunkveins, and clothed with thin cottony down, more dense and soft upon theyoung ones; the under side pure white, with dense cottony wool; the veinsprominent; midrib reddish; the young leaves, as well as the floral onos, beau-tifully silky beneath. (Id.) Mr. Forbes states that he has plants of this willowwith leaves not above half the size of those of others, owing to their beingplanted in a different soil; which will show, he says, “ how much cultureimproves the size of these species of plants.”

? Variety.

® S. a. ? leucophylla ; S. leucophylla Schleicher, (Bovver in a letter.) —Koch has cited S. leucophylla Willd. Enum. Suppl., p. 66., Berl.Baumz ., p. 444. t. 6. f. 3., as a state of S. limdsa Wahlenb., distin-guished by having the under surface of the leaves less snowilytomentose : perhaps this is the same as Schleicher’s.

66. S. obova'ta Pursh. The obovat e-leaved, or Labrador, Willow.

Identification. Pursh FL Amer. Sept., 2. p. 611.; Smith in Rees’s Cyelo., No. 91.; Forbes in SaLWob., No. 144.

The Sexes. The male is noticed in the specific character.

Engravings. Sal. Wob., No. 144., a leaf; and fig. 144. in p. 1630.

Spec. Char., fyc. Stem diffuse. Leaves obovate, obtuse, entire; glabrous above, clothed with silkyhairs beneath. Stipules none. Catkins sessile. Bracteas obovate, black and hairy at the end. Nativeto Labrador, and to the north-western coast of America. Flowering in May. Allied to S. aren&riaL., and somewhat inclined to be upright Stamens two.. (PurshJ Whether introduced, or not,is uncertain.

? ? at 67. S. cane'scens Willd. The greyish Willow.

Identification. Willd. Sp. PL, 4. p. 687.; ? Enum.; Smith in Rees’s Cyclo., No. 86.

Synonyme. S. limbsa Wahlenb. var., Koch Comm., p. 55.

The Sexes. The female is noticed in Willdenow’s description.

Spec. Char., 8jC. leaves oblong-lanceolate, acute, slightly serrated in the middle part'; glabrous andglossy on the upper surface, white and tomentose on the under one. Capsules ovate, tomentose.

( Willd.) Willdenow describes it more particularly from a female dried specimen, as follows : —Branches brown, rather downy when young. Leaves 2 in. to 3 in. long when young; canescent onthe upper surface. Stipules not apparent. Catkin of the female cylindrical, 1 in. long. Capsulesessile. Native country not known with certainty; though in Sweet’s Hort. Brit., ed. 1830, S,canescens Willd. Enum. is stated to be a native of Germany, introduced into Britain in 1815.

^ 68. S. Stuart ia'na Smith. Stuart’s, or the small-leavedshaggy, Willow.

Identification. Smith Eng. Bot., t. 2586.; Smith in Rees’s Cyclo., No. 84.; Eng. FL, 4. p. 203.; Forbesin SaL Wob., No. 72.; Hook. Br FL, ed. 2., p. 419.

Synonymes. S. arenkria masculina Smith FL Brit., p. 1059., Eng. Bot., 1.1809. the text ; S. Lap-pfrnum Walker ; S. limbsa Wahl. var. fbliis angustioribus lanceolktis Koch Comm., p. 55.

Derivation. S. Stuart/drea “ was named in compliment to one of the best men, and most learnedscholars, that Scotland has produced, the late Rev. Dr. Stuart of Luss.” (Hook. Br. FL, ed. 2.,1831.)

The Sexes. Both sexes are described in Eng. Flora : the female is figured in Eng. Bot., and in Sal.Wob. *

Engravings. Eng. Bot., t. 2586.; SaL Wob., No. 72.; and fig. 72. in p. 1617.

Spec. Char., §c. Leaves nearly entire, ovate-lanceolate, acute; shaggy above,densely silky, somewhat cottony, beneath. Style as long as the almost ses-sile woolly germen. Stigmas capillary, deeply divided, the length of thestyle. ( Smith E. F.) A native of Scotland, on the Breadalbane Mountains ;where it flowers in June, and, in gardens, in July and August. Bushy, andcopiously branched ; 2 ft. or 3 ft., or rather more, in height. The branchesdark brown ; downy when young, and leafy, cottony or silky at the tops.Leaves scarcely half the size of those of S. glauca and S. arenaria, and morelanceolate; rarely somewhat obovate, sharp-pointed; sometimes slightlywavy or toothed ; the upper surface greyish green, shaggy or silky, partlydenudated by culture, always very even, not wrinkled or veiny; the under