THE BRITISH WILLOWS 



Analytical Table. 



4- 



10 



, f Catkins terminal, stamens 2 2 



(Catkins lateral on the last year's branches 3 



( Leaves glabrous green on both sides ; catkins on short leafy peduncles, 



qj ovaries glabrous Herbacese. 



1 Leaves ± silky at first, glaucous beneath ; catkins on long leafless 



1 peduncles, ovaries tomentose Keticulatae. 



/'Stamens 2 or more, free ; bracts concolorous, glabrous, or thinly 



hairy towards the extremities ; ovaries glabrous 4 



Stamens 2, free (or united only at the base) ; bracts persistent, tips 



discoloured, silkily hairy 6 



Stamens 2, adnate or + connate ; anthers purple (unless in some 



hybrids), bracts discoloured at the tip Purpureas. 



/■Stamens 5 (4-8) ; bracts fugitive ; catkins later than the leaves ; male 



and female flowers with two nectaries Pentandrae. 



Stamens 3 ; catkins coeval with the leaves ; bracts persistent ; male 



flowers with two nectaries Amygdalinae. 



.Stamens 2 ; catkins coeval with the leaves ; bracts deciduous 5 



Ovaries gradually acuminate into a style longer than the stigmas '■> 

 their pedicels twice as long as the nectaries ; stipules large, broad 



below Fragiles. 



Ovaries suddenly contracted into a very short style ; pedicels shorter 



than the nectaries ; stipules or narrow lanceolate Albae. 



'Ovaries subsessile or lowest shortly stalked, nectaries quadrate 



Myrtosalix. 

 Pedicels of ovaries 3-4 times as long as the quadrate or shortly oblong 



nectaries 7 



Ovaries sessile or subsessile, the lowest sometimes shortly stalked ; 



nectaries linear, exceeding the base of the ovaries 9 



„ | Styles long Phylicifoliae. 



(Styles short, as a rule 8 



/Large shrubs or small trees, usually erect growing, stipules foliaceous 



broad, leaves not blackening Capreae. 



8-j Dwarf shrubs, much branched from the base, usually prostrate or 



ascending, stipules inconspicuous narrow, leaves finely reticulate, 



\ ± blackened when dry Argenteae. 



(Ovaries glabrous ; male catkins densely silky with the long yellowish 

 silky hairs of the bracts Niveae. 

 Ovaries tomentose ; male catkins ± silky, variable 10 



'Leaves glabrous or nearly so, serrate ; ovaries small, style not long 



Arbnsculae. 



Leaves silkily pubescent on one or both sides, entire (S. lapponum), 



or obscurely crenate (S. viminalis) ; ovaries rather large, with 



long style and stigmas Viminales. 



Journal of Botany, May, 1913. [Supplement.] 



