1919] SCHNEIDER— AMERICAN WILLOWS 55 



9. S. ROTUNDiFOLiA Trautvetter in Nouv. Mem. Soc. Imp. Nat. 

 Mosc. 2:304. pi. II (De Salic. Frig. Kochii). 1832; Andersson in 

 DC, Prodr. 16^:299. 1868; Rydberg in Bull. N.Y. Bot. Gard. 

 1:276. 1899; Wolf" in Izv. S. -Petersburg Liesn. Inst. 5:112. 

 pi. j8. Jig. 15-20. pi. 46. fig. y-g. 1900. — S. polaris var. leiocarpa 

 Chamisso in Linnaea 6:542. 1831. — S. retusa var. rotundifolia 

 Treviranus ex Trautv. in Nouv. Mem. I.e., pro synon.; Trautvetter 

 in Middendorff, Reise Sib. i. pt. 2. Bot. Abt. 1:152 (Fl. Boganid. 

 Phaen.) 1847. — ^- rotundifolia a typica Lundstrom in Nov. Act. 

 S. Sci. Ups. ser. 3. 1877. 30. fig. j. — S. leiocarpa Coville in Proc. 

 Wash. Acad. Sci. 3 :338. pi. 41. fig. 2. 1901. — ''This charming Uttle 

 plant .... grows on the islands and both shores of Bering Sea 

 and the Arctic Ocean, and above timber line on the Pacific coast of 

 Alaska eastward to Prince William Sound," and to these localities 

 given by Coville is to be added Collinson Point on Camden Bay, 

 where it was collected by F. Johansen, June 13, 1914 (no. 39 or 

 9381 1 O., m.). The typical form has glabrous ovaries, but two of 

 the specimens before me represent a form with more or less hairy 

 ovaries which I deem best to keep distinct as 



f. pilosiuscula, f. nov. (ab typo ut videtur nonnisi ovariis partim 

 vel omnino villosis differt). As type may be taken no. 3382 of 

 Trelease and Saunders, from Hall Island, July 14, 1809 (f. ; M.), to 

 which no. '3383 from Matthews Island, July 15 (f. ; M.), is to be 

 added. The last specimen has a little longer styles with more or 

 less slender stigmas, thus somewhat resembling S. stolonifera, but 

 otherwise not differing from S. rotundifolia. 



10. S. PHLEBOPHYLLA Auderssou in DC, Prodr. 16^:290. 1868; 

 Coville in Proc. Wash. Acad. Sci. 31336. fig. 28. 1901. — S. anglorum 

 Chamisso in Linnaea 6: 541. 1 831, pro parte, quoad specimin. citata; 

 Trautvetter in Act. Hort. Petrop. 6:37. 1879. — S. buxifolia Trev. 

 apud Trautv. inNouv. Mem. Soc. Imp. Nat. Mosc. 2:301. pi. 10. 183 2, 



"> Wolf, one of our best salicologists, who was curator of the Imperial Institute 

 of Forestry at Petrograd, at least until the outbreak of the war, has made some 

 extremely valuable studies on European and Asiatic willows. Unfortunately his papers 

 are written in Russian, but they are accompanied by excellent sketches. The title 

 of his main paper is (translated) "Materials toward the study of the willows native 

 to European Russia," which appeared in two parts in 1900 in vols. 4 and 5 of the 

 periodical quoted. 



