] 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. arenaria 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 ones, 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.”

f Variety.

as S. a. ? leucophylla ; S. leucophylla Schleicher. (Borrer 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 FI. Araer. Sept,, 2. p. 611.; Smith in Rees’s Cyclo., No. 91.; Forbes in SalWob., No. 144.

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

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

Spec. Char., &;c. 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. arenkriaL., and somewhat inclined to be upright. Stamens two.~ (Pursh.) Whether introduced, or not,is uncertain.

? m? sk 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 Wiildenow’s description.

Spec* Char., %c. 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. Capsui®sessile. Native country not known with certainty; though in Sweet’s Hort. Brit., ed. lfwt), a.canescens Willd. Enum. is stated to be a native of Germany, introduced into Britain in 1815.

* 68. S. Stoart ia'NA Smith. Stuart’s, or the small-leavedshaggy, Willow.

Identification. Smith Eng. Bot., t. 2586.; Smith in Rees’s Cyclo., No. 84.; Eng. FI., 4. p. 203.; lorbeiin Sal. Wob., No. 72.; Hook. Br FI., ed. 2., p. 419. c T

Synonymes. S. arenaria masculina Smith FI. Brit., p. 1059., Eng. Bot., 1.1809. the text; S. wrpbnum Walker ; S. limbsa Wahl. var. fbliis angustibribus lanceolktis Koch Comm., p. 55.

Derivation. S. Stuartzdraa “ was named in compliment to one of the best men, and most tearscholars, that Scotland has produced, the late Rev. Dr. Stuart of Luss.” (Hook. Br. ri, •>

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.style. ( Smith E.F.) A native of Scotland , on the Breadalbane Mountain^,where it flowers in June, and, in gardens, in July and August. Bushy, a "copiously branched ; 2 ft. or 3 ft., or rather more, in height. The brancdark brown ; downy when young, and leafy, cottony or silky' at the top •Leaves scarcely half the size of those of S. glauca and S. arenaria, and ®lanceolate; rarely somewhat obovate, sharp-pointed; sometimes silg 'wavy or toothed ; the upper surface greyish green, shaggy or silky, P a ldenudated by culture, always very even, not wrinkled or veiny; the u