1)0 SALICACE.E. SolU 



as in tliat speries. .S*. suhcordnfa, Anders., similarly distingnislieil tVoni S. gluKcc, dilVcis in its 

 orliicular-oval leaves and large seinicoidate denticulate stii)nles. 



17. S. arctica, Tiillas. Leaves obovato, oval, or spatulate-lanceolate, entire or 

 obsoletely ami reinottly serrate, at length sniootli, glaucous beneath : anients lateral 

 and soni(!\vhat terniiMal, upon long strict leafy jK'duncles, erect, ratlier thick and 

 densely flowered : scales obovate, ol)tuse, i)ale or ilark colored, jiilose : capsule conic 

 from an ovate base: style medium sized, becoming l)ro\vn : stigmas divaricately 

 parted. — Anders, in DC. Prodr. xvi"'^. 28G ; Watson,"" Dot. King E.xp. 32G. 



A'ar. petraea, An'ders. I. c. A dwarf creeping shrub, with suberect branches leafy 

 at the top, oidy 2 to 4 inches high, though often covering considerable surface : 

 leaves ]ancei>late, tapering somewliat equally to tlie base and ajjex (an inch long by 

 3 to 6 lines wide), entire, green on botli sides, sliglitly i)aler and ])roiuinently nerved 

 beneatii : uments terminal, erect, at length tldck and densely llowcreil, an incli or two 

 long : scales thin, browni.--h, s|)arsely pilose : capsules ovalci-eonical, 2 or 3 lines long, 

 silky, subsessile, tlie ne tary rather exceeding the base of the capside : style very 

 mucli elongated, slender : stigmas bihtl, divaricate. 



In vaiious forms from difonland and Lalnador to Alaska. Tlio variety piira'a in the Sierra 

 Nevada at 'J.OOO to ll.OOu Ir.i AuiwAi^ {Anderson, llrcvcr, lUda uder, l.ct,uun,i\ mm\ ;i1.m) on al|iiiie, 

 siimniils of the lloeky iMunntains from C'olora<lo, wlieie it is lrei|nently ((dleeted, northward to 

 Ihitish America (IJonn/ciiH, Lyall); an alpine form of the species, and the only one known to 

 occur within the boundaries of the United Slates. 



18. S. Monica, r<e1)b. A small alpine shrid), ])rofusely branched, jirocundieut 

 but not creejiing; branches smooth : leaves oblanccolati; or oblong, ^ to 1 inch long, 

 3 or 4 lines wide, acute at botii ends, or the lower obtuse, entire or obscurely ser- 

 rate, glabrous, bright green ami with regtdarly radiating parallel impressed nerves 

 above, paler but not glaucous beneath; sti|)ules none: anients lateral, diminutive, 

 roundish, densely ilowered, sessile or on very short but distinct jjedunclcs, with two 

 oblong leafdike bracts at liase; scales in the fertile anient roundish-ovate, rather ob- 

 tuse, dark colored and slightly villous, in the .staniinat(i anient liiigulate, much nar- 

 rower, longer, jialcr, very acute and nearly smooth : iilaments long; anthers after 

 llowering brownish : capsules minute, a line long, ovate-conical, silky-tomentose, 

 sessile : styles medium sized, not produced ; stigmas mostly entire, spreading. 



Mono Pass summit ; June, liolandcr. A clear species of the MijrlosaUx section ; diflering 

 widely from S. tcncra, Ander.s. (from the Cascade Mountains, 7,000 iet-t altitude, Li/c//), witli which 

 alone it can be comjiaied, — that having gracefully slender anients terminating lateral branches, 

 Ungulate leaves, and the relative form of the scales of the male and female anients singularly re- 

 versed, as it weie, from what they appear in S. Muaiai. 



§ 4. Stamen solitdri/. Aineiifs tJiicl:, denseli/ villous, (ippcitrtnf/ in iJie axi/s of the 

 rif/id jjerslstent Irdves. (A jiurc/i/ (irb'ttrarj and jjiorisioital (irraiujcnient.) 



19. S. Coulteri, Andeis. Recent branches very stout, furrowed, and densely gray 

 ish-tomentose : leaves crowded, thick and becoming rigid, oblong, about two inches 

 long l)y an inch wide, acute at each end, dull green and glabrate above except the 

 ■whitish impressed midrib and nerves, beneath very densely clothed with a soft per- 

 sistent white tonientum, the nnvrgin revolute and entire ; petioles short and stout, 

 dilated ])elow and (Jiiilnacing the large roundish obtuse silky buds; stipnhis varying 

 from renifonn to lanceolate with an oblicpie j)oint : staminate aments sessile [always!], 

 cylindrical, erect, densely ilowered ; scales spatulate, ])ale, di^nsely villous with very 

 long silky hairs, which conceal the lilament of the single stamen found under each 

 scale. 



Known only from staminate aments collected by Coidler,\mi locality uncertain, and by luduiidcr 

 near San Francisco ("a single tree, 15 feet high ; common in Marin County"). In oiw specimen 

 the aments (about an inch long) a])peai in the axils of the jieisistent leaves. The dense wool- 

 liness of the under surface of the leaves is dull white rather than silky, at length apparently fer- 

 ruginous, disappearing only from the piominent midrib. 



