1918] SCHNEIDER—AMERICAN WILLOWS 343 
River, July 25, 1904, W. Spreadborough (no. 62618, fr.; O.; magis ad groen- 
landicam spectat); Bathurst Inlet, Katur Point, lat. 67° to 68° N., long. 109° 
to 111° W., August 22, 1915, R. M. Anderson (no. 456 or 93775 O., f.; specimen 
mancum). 
7. 5S. CORDIFOLIA Pursh, Fl. Am. Sept. 2:611. 1814; TRaut- 
VETTER in Nouv. Mém. Soc. Imp. Nat. Mosc. 2:208. pl. 9 (De Salic. 
frig. Kochii). 1832; Hooxer, FI. Bor.-Am. 2:152. 1839, exclud. 
specim. Drummond.—S. callicarpaea Trautv., Ic. 295, pl. 7; 
RypBERG in Bull. N.Y. Bot. Gard. 1:270. 1899, quoad specim. 
labrad.—S. planifolia Hook., l.c. 150, quoad specim. labrad. 
saltem ex parte, probabiliter non Pursh.—S. alpestris c) americana 
Andersson in Ofv. K. Vet.-Akad. Foérh. 15:129. 1858.—S. arctica 
8 Brownei 3° fumosa And. in DC. Prodr. 167:287. 1868, quoad pl. 
labr.—S. glauca Rydbg. in Bull. /.c. 271, quoad pl. labr.—S. Wag- 
hornet Rydbg., l.c., pro parte; Britton and Browy, IIl. FI. ed. 2. 
1:604. fig. 1486. 1913.—S. labradorica Rydbg., l.c. 274, pro parte 
max.—PuRsH’s description of this species is very short and runs 
as follows: “S. depressa; foliis ovalibus subacutis basi cordatis 
integerrimis reticulato-venosis supra glabris, subtus pallidis nervo 
margineque pilosis, stipulis semicordatis.’’ It was taken from a 
sterile plant cultivated ‘‘in Hort. Andersson.” PursH adds “in 
general habit it resembles S. myrsinites.”’ Unfortunately there is 
.no type left by Pursu, but a specimen from ANDERSSON’S garden 
is preserved at Kew, of which I have not yet seen a photograph, 
but only a rough outline sketch in herb. G. The plant is next 
mentioned by Fores (Salict. Wob. 277. fig. 143. 1829), who only 
translated PursH’s diagnosis. The leaf represented in fig. 143 
clearly shows a finely denticulate margin, and it looks much more 
like a leaf of S. calcicola Fern. Iam unable to ascertain its identity. 
HOOKER said: ‘‘The plant named for me by Mr. Borrer, who is 
probably acquainted with the original plant cultivated by ANDERS- 
SON, little deserves the appellation of cordifolia, its leaves being 
more frequently acute than retuse at the base. Many of the speci- 
mens approach very near the following” (S. arctica R. Br.). Ihave 
not yet seen the Labrador type of HookEr’s cordifolia collected by 
KOHLMEISTER. Hooker also referred to this species specimens 
collected in the Rockies by DrumMonp which represent S. arctica 
