THE BRITISH WILLOWS 73 



subacute or rounded (rarely slightly retuse) at the tip, rounded or 

 subcordate at the base, finely serrate ; glabrous (earliest with long 

 silky hairs beneath), green, reticulate when dry with nerves raised 

 often on both sides. Catkins \-\ in. long, slender, ovoid then 

 cylindric ; bracts shortly or roundly obovate + silky ; filaments 

 glabrous ; ovaries small subsessile, or at length lower shortly 

 pedicelled, ovoid or ovoid-conic grey pubescent ; nectaries single, 

 linear, exceeding the pubescent pedicel ; styles rather short, about 

 as long as the stigmas. 



A form found by E. S. Marshall (No. 1175) in Argyll differs 

 in having broader more coriaceous leaves, glaucous-green beneath, 

 and in being more glabrous from the first. 



The description above is drawn from $ specimens gathered in 

 Coire Ardran and $ specimens from Meall na Saone, both localities 

 in Perthshire. A plant from the latter mountain S. J. Enander 

 suspects to be S. arbuscida X herbacea x lapponum. Europe : 

 Norway at Kongswold, and Switzerland. 



SALIX ARBUSCULA X LAPPONUM. 



Syn. S. spuria (S. lapponum x arbuscula) B. White, Revision, 

 430 (non Willd.). — S. arbuscula x lapponum Seemen, iv. 285. 

 Eloderus, Bihang K. Sv. Vet.-Akad. Handl. xvii. pt. 3, n. 1, 39 

 (1891), and Arkiv for Bot. viii. n. 9, p. 5 (1909). 



Exs. Hb. B. White, No. 304. E. E. & W. R. Linton, 

 No. 46. Hb. E. E. Linton, Nos. 125, 134, 150. Hb. W. R. Linton, 

 No. 242. 



A dwarf shrub, 1-2 ft. high, erect or ascending ; branches and 

 buds pubescent at first, sooner or later glabrous. Stipules 0. 

 Leaf-blades f-lf in. long, oval, oval- or ovate-oblong, or oblong- 

 lanceolate, acute or acuminate, serrate, crenate or subentire, 

 + softly pubescent at first, green and sooner or later glabrescent 

 above with the veins often impressed, grey-green or glaucous or 

 sometimes green, glabrescent or not, beneath. Catkins §— 1 in. 

 long, cylindric, coeval with the leaves ; $ small, anthers reddish 

 at first ; ? elongate to 1| in. close-flowered ; bracts obovate- 

 oblong obtuse or rounded, more rarely ovate subacute, turning 

 dark brown in the upper part, silky ; ovaries ovoid-conic, tomen- 

 tose, sessile or the lower ones shortly pedicelled ; nectaries linear 

 long, sometimes exceeded by the lowest pedicels ; styles usually 

 long, stigmas small. 



S. spuria (Schleich.) Willd., which is S. arbuscula x helvetica, 

 has been often quoted as a synonym of S. arbuscula x lapponum, 

 in error. Since we have no proof of S. helvetica being a British 

 plant, we have no claim to S. spuria as native. 



S. arbuscula x lapponum has been found on the northern 

 slopes of Ben Lawers, Meall Garbh, Meall Ghaordie, and Meall 

 na Saone, and on other hills, near Killin, all in the Breadalbane 

 range, Perthshire ; and Canlochan Glen, Forfarshire. Europe : 

 Scandinavia. 



[SALIX ARBUSCULA X MYRSINITES. 



Syn. S. serta B. White, Revision, 436 ? Seemen, iv. 240. 

 Exs. Hb. Boswell-Syme (" Salix arbuscula. Breadalbane 

 Journal of Botany, Sept. 1913. [Supplement.] g 



