80 JOURNAL OF THE ARNOLD ARBORETUM [vol. ik 



Bot. Club, xvii, 149. I have had before me Faxons splendid collections, 

 and I have seen myself the plant in a living state on Mt. Washington. I 

 take the liberty of proposing for it the name S. Grayi. 



S. babylonica X S. lasiandra. This hybrid is mentioned by C. L. 

 Anderson in Zoe I. 41 (1890), and also by Mott in Univ. Calif. Public. 

 II. 196 (1905). 



? S. Barclayi X S. Scouleriana. I have seen a specimen from Bennett, 

 British Columbia, collected by F. A. Walpole on July 12, 1900 (No. 1082, 

 fr. submat.; W.) which may represent such a cross. 



? S. Barrattiana var. Tweedyi x S. plani folia var. monica. Like such 

 a hybrid looks a specimen collected by A. Nelson in Wyoming, Willow 

 Creek, May 22, 1897 (No. 2910, f.). The old female aments point to 

 var. Tweedyi while otherwise the plant is hardly different from the west- 

 ern form of S. planifolia. 



S. Bebbiana X S. cordata. Forms of such a hybrid have been distrib- 

 uted by F. F. Forbes, Hrookline, Mass., who is an acute observer of hy- 

 brids among the American Willows, as S. cordata X rostrata. 



S. Bebbiana X S. discolor. Of this hybrid, too, Forbes has distributed 

 material under S. discolor x rostrata. 



S. Bebbiana x S. humilis. This cross I know only from specimens 

 distributed by Forbes as S. hum His x rostrata. 



S. Bebbiana x S. petiolaris. This hybrid has also been found and 

 distributed by Forbes as S. petiolaris x rostrata. Fernald, too, collected 

 it in 1909 in Maine (No. 1687; G.). 



S. Bebbii Gandoger, Fl. Europ. xxi. 167 (1890). This name has been 



used by the author for the cross S. cordata X sericea. 



? S. Bonplandiana x S. Gooddingii. Sec Schneider in Bot. Gaz. lxv. 

 40 (1918). 



? G. Bonplandiana x S. Humboldtiana var. stipulacea. See Schneider 

 in Hot. Gaz. lxv. 40 (1918). 



S. brachycarpa X S. ehlorolepis. In Bot. Gaz. lxvi. 339 (1918), in 

 dealing with S. ehlorolepis I have mentioned that there are forms which 

 must be regarded as true hybrids between these two species. I propose 

 the name S. gaspeensis for this cross which is thus characterized: 



A S. chlorolepide (et var. antimima) praecipue recedit filamentis basi 

 vel ad medium plusminusve pilosis (rarius ex parte glabris), foliis ramu- 

 lisque novellis densius sericeo-villosis. A S. brachycarpae forma in monte 

 Albert collecta differt ramulis hornotinis foliisque adultioribus magis 

 glabreseentibus epidermide superiore foliorum stomatibus plusminusve 

 sparsis vel satis numerosis praedita filamentis interdum pro parte glabris. 



Type Locality: Mount Albert, (iaspe County, Quebec. 



Specimens examined: Quebec. Gaspe County: "common on the broad 

 plateau at the top of Mt. Albert, above 1000 m.", July 26, 1881, J. A. Allen 

 (type m., f.; G., W.); highest summit of same mountain, about 3150 m., July 31, 

 1881, same collector (f. m.; G.); on wet serpentine slopes, July 23, 1906, Fernald 

 & Collins (No. 512 a, f.; G.) 



S. brachycarpa X S. pseudolapponum. Hybrids of this origin seem to 



