89 



Perigynia not at all or only slightly inflated 

 W -j Perigynia moderately inflated 



Perigynia much inflated . . . 



^ j Perigynia with merely a short point 



Perigynia with a distinct beak 

 Y j Scales black, purple, or brown . 



Scales brownish becoming white 



A 



B 



C 



E 



F 



G 



H 



I 



J 



L 



N 



O 



A., 



No. 120-7, 



No. J39-151. 



. Y. 



No. 116-19. 



No. 46-64 



No. 71. 



Synopsis of the Northern Species of Salix. 

 r Catkins sessile appearing before the leaves , 

 J Catkins lateral with 4-5 leafy bracts at base . 

 ] Catkins borne on the summit of lateral leafy shoots 



of the season ....... 



Ovaries staked 



Ovaries sessile or nearly so . 



Leaves entire or obscurely wavy toothed 



Leaves serrate ........ 



B. 

 I. 



Y^ j Leaves petioled 



Leaves almost sessile ; shrub 



r -I 



2 



higi 



Leaves taper-pointed; ovary densely woolly 



Leaves abrupt at apex 

 Leaves smooth above 



y 



ovary silvery hairy 



Leaves downy above ; stigma sessile 

 Leaves finely and evenly serrate 



. J- 



C 



D. 

 . F. 



K. 



. S. tristis, 

 S. Candida. 

 S. hiimilis, 



S. sericea, 

 S. petiolaris. 



Leaves irregularly toothed, entire at base and apex S, discolor. 



Filaments united ; leaves oblanceolate 



Filaments separate ; leaves linear-lanceolate 

 ( Ovary smooth, lanceolate 



Ovary silky hoary, almost linear 



Ovary silky, ovoid conical . 

 j 3° pr less high . . . - . 

 \ Trees ; 12^-80° high , 





^ j Stem upright 



Prostrate or spreading ; alpine species 

 Ovary smooth, sessile , . . . 



Ovary smooth, short-stalked . . . 



Ovary silvery silky . . . v . 



Stamens 3-6 or more ; ovary stalked, glabrous 



*S. purpurea. 



S. viminaHSy 



S. cor data 



S> livida var. occidcntalis. 



S. chlorophylla. 

 • - K. 



M 

 S. my r till aides. 



. S. herbacca, 

 S. Cutleri, 



M \ Stamens 2 ; ovary nearly sessile, glabrous 



Stamens 2 ; ovary stalked, downy 

 Pods taper-pointed ; stamens 5 

 Pods short ovate; stamens 3-6 . 

 Leaves smooth, glaucous beneath 

 Leaves silky beneath . 



. S. ar^yrocarpa, 



. N. 



O. 



S, longifolia. 



S. lucida. 



. S, nigra, 



. S.fragiiis. 



, S, alba. 



LUCIEN M. L^NDERWOOD. 



U 



f 



65. OphioglOSSum palmatum, Fluniier. — Truly, many and 

 queer are Nature's" freaks in shaping leaves, but I think she really 

 surpasses herself in the odd forms she uses in the manufiLicture of 

 Ophhnriossum pahnatum. Of about thirty specimens of this rare 

 plant," which I received from the Indian River country last summer, 



