BOTAMCAL GAZETTE. • Z2p 



where Dr. Carpenter first collected it about 50 years ago; it is a 

 small tree with dark ash-gray branchlets bearing numerous long 

 (l|to2 inches lung) stout straight spines; leaves spatulate or 

 obovate, obtuse, attenuate into a short petiole or almost sessile. 

 simply serrate towards the upper part, | to 14- inches long: those 

 of the shoots similar or acutish, often doubly or incisely serrate or 

 slightly lobed, with linear glandular stipules, all persistently pu- 

 bescent; compound corymb woolly; flowers large, calyx lobes linear, 

 entire: styles 3; fruit unknown. — G. Fnokl.manjst. 



Salix ftaveseens, Nutt., var. Seouleriana — In undertaking 

 a revision of the Willows tor the Flora of California it was found 

 that the miterial available for the purpose was. in some respe< ts, 

 very scant and unsatisfactory. The rich collections which have 

 since been made, while confirming the accuracy of some portions 

 of the work done under such unfavorable circumstances, reveal, in 

 other directions, incompleteness and mistakes which ! expeel 

 to correct in a lump by and by. It is desirable, however, that 

 the following correction be made immediately. 



The typical Salix Jlavescens of Nuttall is a Rocky Mountain 

 shrub, or small tree, found also in the Sierra Nevada and the 

 mountains of Oregon and Washington Territory, while the coast 

 tonus, constituting the "greater portion of what is included under 

 the name of S. ftavescens in the Flora of California, should be ar- 

 ranged as a variety of that species for which the old name of 

 Seoul riana might well be retained, and under which S. bmchystachys, 

 Benth., and S. capreoides, And., would be placed as striking modifi- 

 cations. While S. flavescens and var. Scouleriana exhibit an intri- 

 cate diversity of forms which defy the drawing of any line between 

 them, all are easily enough distinguished from their Atlantic repre- 

 sentative S. discolor; and so also, S, lasiolepis and var. Fendleriana 

 (of corresponding range and affinity) are more nearly allied to each 

 other than is either to the Atlantic S-. lucida. I may remark that 

 this is in accordance with Prof.Sargent's recent statement that"the 

 North American continent may be most conveniently divided, m re- 

 gard to its forest geography, into Atlantic and Pacific regions, by 

 the line of the eastern base of the Rocky Mountains. — M.S.BebB. 



The Flora of North America.— Last summer at Montreal 

 Dr. Gray read a, paper bearing the above title, which is so full of 

 interest to every American botanist that we can hardly forbear pub- 

 lishing it in full as it appears in the Am. Jour, of Science for 

 November. We will however pass over all that was said in regard 

 to the Floras ot Miehaux and Pursh and give that concerning Dr. 

 Gray's own work, for his name will always be more intimately as- 

 ociated with the North American Flora than that of any other 

 danist. There is too a good deal of ignorance as to the nature 



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