1919] SCIIXEIDER, NOTES ON AMERICAN WILLOWS. VI 77 



gro^vTi leaves are narrowly oblanceolate, at first sparsely pubescent with 

 grayish and fulvous hairs, very soon becoming glabrous (except a few hairs 

 on the midrib of the upper side). This plant, therefore, does not agree 

 with var. vestita, and probably represents a form closely related to S, ylani- 

 folia. I am not yet sure whether Andersson's var. vedita is only a form of 

 the latter or has to be regarded as a distinct species. See also my remarks 

 under S. pellita, p. 82. 



In 18G7, Andersson furthermore described as a " v^arietas singularis '* 

 S. chlorophylla *S. pychnocarpa from specimens collected by Bourgeau " ad 

 Carlton-house " which, in 18G8 he called S. chlorophylla S. pychnocarpa. In 

 his note (18G7) he said: '* Est forma valde singularis ad sequentem [S. pelli- 

 tam] transltum evidentissimum efficiens. Frutex non altus videtur, ramis 

 glaberrlmis fusco-castaneis. Foliis iis S. chlorophyllae sat similia sed fere 

 angustiora et subtus tomento hand denso subargentea; amenta ut in 

 8. grisca et capsulae eximie condensatae ut fere undique divarlcatae ad- 

 pareant." I have seen a photograph and fragments of a specimen collected 

 by E. Bourgeau at " Carlton, bord de la riviere, 6 Mai 1858 " (No. 13, m., 

 f. ; K.). The flowers generally agree with those of S. planifolia but the fila- 

 ments are sparsely pilose, and, owing to the absence of leaves, I cannot 

 decide whether it belongs to one of Andersson's forms or to S, pelliia (see 

 later). It certainly does not represent the type of var. pychnocarpa. Of 

 this form Bebb (1889) sj)oke as follows: '* The characters specified by Prof. 

 Andersson as sefving to distinguish his S, chlorophylla from the Old World 

 S. phylicifolia, are most noticeable in the Rocky Mountain S. clilorophylla 

 var. pycnostachya (sic!) . . ." So far as I can judge by Bebb's state- 

 ment he did not see Andersson's type but was entirely guided in his deduc- 

 tions by the description. The type came from Carlton in central Saskatche- 

 wan, and before we can judge its relationship it is necessary to investigate 

 what the typical 5. chlorophylla (var. vcstiia) is. This cannot be done with- 

 out comparing the types of Andersson which, if at all, must be preserved in 

 the Hookerian Herbarium (K.) or in the herbarium at Stockholm or Upsala. 



I have seen material of typical S, planifolia (S. chlorophylla denudata) 

 from Labrador (where the most northern point of its known distribution 

 seems to be Nain), northeastern Quebec (Saguenay County, as far north 

 as Lake Mistassini, Rupert Land, J. M. Macoun, No. 24706, O.; m., f., and 

 the Gaspe Peninsula), Maine (Mt. Katahdin), New Hampshire (White 

 Mountains) and Vermont (Mt. Mansfield). In addition to these I have 

 before me the following specimens from Keewatin and the Northwest Terri- 



tories which come very near S. planifolia. The most typical one is a speci- 

 men collected by J. W. Tyrull at Chesterfield Inlet on the southwestern coast 

 of Hudson Bay, September 11, 1893 (No. 1763, fr.; O.). The twigs arc 

 glabrous, the fruits measure up to 7 mm. in length, and the leaves possess a 

 good many stomata in the upper surface, which seem to be entirely wanting 

 in the leaves of the type. More different is J. M. Macoun's (No, 179153, 

 O.; fr. adult.) from Churchill on Hudson Bay. Here the fruits are up to 

 8 mm. long, and the young twigs are more or less covered with a short. 



