l8 9i] Notes on North American Willows. 105 



Santa Cruz Island. Unfortunately only the leaves were ob- 



tained. 



P 



si stent tomcntum. The character "filaments more or less 

 united at base " should be more distinctly emphasized: it is 

 really quite constant and will often serve to identify staminate 

 specimens unaccompanied by leaves. 



0. S. FLAVKs( i;\s Nutt. — The name was adopted at first 

 from Nuttall's description but I have since seen specimens 

 named by Nuttall himself which confirm beyond all question 

 the identity of the species. The time-honored name of the 

 Flora Boreali-Americana, $* Scouleriana, will probably always 

 be retained for the Pacific Coast forms which differ most 

 widely from the type, but as this difference is observed al- 

 most wholly in the form of the leaves and as the leaves of the 

 type specimens of Scoulcriana, in the Hookerian herbarium 

 are really those of S. Sitchensis, we are obliged to acknowl- 

 edge a certain inconsistency, for which we find excuse in a 

 desire to perpetuate among the willows of the N. \V. Coast 

 the name of the early explorer. This is another polymor- 

 phous species, which would be more faithfullv reported if 

 broken up into a series of varieties. 



10. S. MACROCARPA Nutt., var. ARGENTEA — This beautiful 



little willow, with its silvery-silky capsules and foliage, and twigs 



.overspread by a delicate glaucous bloom, may be regarded 



as a marked variety of the typical .V. macrocarpa Nutt. of the 



Columbia River valley. An intermediate form has been con- 



M 



As has 



already been shown (Box. GAZETTE vol. x. p. 221) Anderson 

 transferred Nuttall's name to a single specimen, from Hud- 

 son's Bay, in the Kew Herbarium, and then redescribed (es- 

 sentially) the Oregon plant under the name of .V. Geyeriana. 

 It. S. SlTCHEXSis Sanson. — Following either the ana- 

 lytical key or the subordinate grouping of the species, the 

 solitary stamen now known to be constantly characteristic of 

 5. Sitchensis would carry this in all its forms, over to no. 19, 



S. Coultcri — and rightly so: for while S. Coultcri represents 



nothing more than an abnormal development of Sitchensis* 



the species itself, in virtue of the single stamen, the long, 



slender, flexuose aments and peculiar vesture and vetoing of 



the leaves, must become the type of a new group (Sin HENSES) 

 and be removed from its present setting. It was a mistak- 

 to arrange the little willow ^collected on a high mountain 



