1590 ARBORETUM AND FRUTICETUM. PART III. 



showing parallel veins, and being less shining. Introduced in 1823. There 

 are plants at Wobnrn, Henfield, and Flitwick. 



j 158. S. U V VA-U'RSI Pursh. The Bearberry-kaw?d Willow. 



Identification. Pursh Fl. Amer. Sept., 2. p. 610. ; Smith in Rees's Cyclo., No. 77. ; Forbes in Sal. 



Wob., No. 151. 

 Synonymes. ? Identical with S. KitaibehVJno. (Borrer in his list.) It is probable that S. UVa-ursi 



is only a variety of -S. retusa L. (Id.) 



The Sexes. The female is noticed in the Spec. Char., %c., below. 

 Engravings. Sal. Wob., No. 151. ; and out fig. 151. in p. 1630. 



Spec. Char., fyc. Stem depressed. Leaves spathulate-obovate, obtuse 

 entire, glabrous ; shining above, glandular at the margin beneath. Stipules 

 none. Catkins lax. Bracteas oblong, fringed. Ovary stalked, ovate, 

 glabrous. Style deeply divided. Stigmas two-lobed. A beautiful little 

 species, with all the appearance of Jrctostaphylos IPva-ursi in habit, as well 

 as in the form of its leaves. (Pursh.) A native of Labrador. Introduced 

 in ? 1811, and flowering in April and May. This was possessed alive by 

 Mr. G. Anderson. 



^ 159. S. .SERPYLLIFO'LIA Scop. The Wild-Thyme-leaved Willow. 



Identification. Scop. Cam., No. 1207. ; Willd. Sp. Pi., 4. p. 684. ; Hayne Abbild., p. 325. ; Smith in 



Rees's Cyclo., No. 71. ; Forbes in Sal. Wob., No. 65. 

 Synonymes. S. retusa Koch, y Koch Comm., p. 63. It is probable that S. serpyllifolia Scop, is only a 



variety of.S. retusa L. (Borrer in his list.) 



The Sexes. The male is figured in Sal. Wob., the female in Hayne Abbild. 

 Engravings. Scop. Carn., t. 61. "Scopoli's figure throws no great light on the " species. (Smith in 



Rees's Cyclo.) Sal. Wob., No. 65. ; our figs. 1347, 1348. ; and Jig. 65. in p. 1616. 



Spec. Char., fyc. Leaves ovate, or ovate-lanceolate, acute, entire, 

 glabrous, shining above. Catkins oblong, of few flowers. Cap- 

 sules elliptic, glabrous. Stigmas sessile. (Smith in 

 Rees's Cyclo.) A native of the high mountains of 

 France, Italy, and Switzerland; flowering in May. 

 'l347 I ntroduced in 1818 - Haller, Allioni, Villars, and 



other botanists, took this for a variety of S. retusa; ^ 4 

 but it appeal's to be widely different, the leaves being nearly 

 three times smaller, and always acute. A very curious little plant, only 

 1 in. or 2 in. high, of which there are specimens at Henfield, in the Chelsea 

 Botanic Garden, and in the arboretum of Messrs. Loddiges. 



jc 160. S. CORDIFO V LIA Pursh. The heart-leaved Labrador Willow. 



Identification. Pursh Fl. Amer. Sept., 2. p. 611. ; Smith in Rees's Cyclo., No. 72. ; Forbes in Sal. 

 Wob., No. 143. p. 277. 



Engravings. Sal Wob., No. 143., a leaf; and fig. 141. in p. 1630. 



Spec. Char., &c. Stem depressed. Leaves oyal, rather acute, entire, reticulated with veins, heart, 

 shaped at the base ; glabrous above, pale, with a hairy rib and mavgin beneath. Stipules half- 

 heart-shaped. Native of Labrador. In general habit it resembles S. Myrsinltes. (Pursh.) A 

 native of North America, in Labrador. Introduced in 1811, and flowering from April till June. 

 Koch observes of this species, that it is very similar to S. Waldsteinjaraa Willd., and differs only 

 in the leaves being strictly entire. The leaves, when young, are sprinkled with villose hairs, but 

 soon become glabrous, except at the edge. 



Group xxii. Herbacea Borrer. 

 Very low Shrubs, scarcely rising an Inch above the Ground. 



There are only two species in this group, the characteristics of which will be 

 found in their specific characters. 



j 161. S. HERBA^CEA L. The herbaceous-/oomg Willow. 



Identification. Lin. Sp. PI., 2445.; Willd. Sp. PI., 4. p. 682.; Hayne Abbild., p. 233. ; Smith in 

 Rees's Cyclo., No.66. ; Koch Comm., p. 63. ; Smith Eng. Bot.,"t. 1907. ; Eng. Fl., 4. p. 199. ; 

 Forbes in Sal. Wob., No. 63.; Hook. Br. Fl., ed. 3.; Mackay Fl. Hibern., pt.l. p. 253. ; Host 

 Sal. Austr., 1. p. 32. ; Pursh Fl. Amor. Sept., 2. p. 617. 



The Sexet. Both sexe are described in Eng. Fl., and figured in Sal. Wob., Hayne Abbild., and 



