204 DIOECIA— DIANDRIA. Salix. 



Tab. lOoS^of the JR, Daw. named S.lapponum, answers in many 

 particulars to this species, though 1 know no Willow whose styles 

 or stigmas, exactly resemble that figure. The true lapponum is 

 represented in t. 197 of that work, for arewaria, as already men- 

 tioned. 



39. S. arenai'ia. Downy Mountain Willow. 



Leaves nearly entire, ovate, acute ; reticulated and some- 

 what downy above ; veiny and densely woolly beneath. 

 Style as long as the sessile woolly germen. Stigmas 

 linear, deeply divided, the length of the style. 



S. arenaria. Linn. Sp. PL 1447. Fl. Lapp. ed. 2. 298. t. S.f.o, q. 

 Fl. Br, 1058. E?igl. Bot. v. 26. t. 1809. Rees's Cycl. n. 90. Hook. 

 Scot. 283, excluding S. Stuarilana. Willd. Sp. PL v. 4. 689 ; 

 excL FL Dan. L 197, and HalL n. ] 642. 



S. foliis integerrimis ovatis acutis : supra subvillosis subtus tomen- 

 tosis. Linn. Gothl. 206. 



S.lapponum. Lightf.GO-i. Huds.65]. 



S. helvetica. Villars Daiiph. v. 3. 783 ; from the author; excl. 

 HalL syn. 



S. limosa. fVahlenb. Lapp. 26o. 



S. n. 20. Gmel. Sib. v. 1 . 164. t. 36./. 1 ; excL Ray's syn. From the 

 author in Herb. Linn. 



On mountains in Scotland. Mr. Dickson. 



In Breadalbane. Rev. Dr. Stuart, and Mr. W, Borrer. On the 

 Clova mountains. Mr. G. Don. 



Shrub. May, June. 



A larger and stouter shrub than the last, of which it was supposed, 

 by the original finder, to be the fertile plant ; but barren as well 

 as fertile individuals of both species, agreeing exactly together 

 in other respects, and differing alike from correlative ones of 

 the other species, are now well known. In size and general 

 habit, this most resembles S. glauca, but their discriminative 

 marks are clearly discernible. The leaves of arenaria are rather 

 smaller and shorter, more precisely ovate, with a little sharp 

 point J their upper surface dark green, reticulated with sunk 

 veins, and clothed with thin cottony down, more dense and soft 

 upon the young ones ; the under side pure white, with close, 

 dense cottony wool ; the veins prominent ; midrib reddish ; the 

 youngest, as well as Jloral ones, beautifully silky beneath. Sti- 

 pulas none. Footstalks broad at the base, not decurrent, though 

 with some swellingof the branch below their insertion. Catkins 

 on short lateral branches, with a (ev^ ^oral-leaves ; barren ones 

 ovate, short and thick ; fertile longer, cylindrical. Scales of 

 each ovate, more or less acute, blackish, copiously bearded. 

 Nect. oblong, obtuse. Stam. twice the length of the scale. 

 Germ, sessile, ovate, acute, covered with thick white wool. 



