70 JOURNAL OF THE ARNOLD ARBORETUM [vol. m 



Andersson. — S. Austinae Rydberg, pro parte.— See Schneider in Bot. 

 Gaz. lxvi. 329. 



46d. S. glauca var. ovalifolia Lange — S. glauca sericca oralifolia Anders- 

 son. — See Sehneider in Bot. Gaz. lxvi. 3.31. — Lange also enumerated 

 the following varieties: var. sericca, var. avvendiculata* var. annus 



r. sericca, var. append icu lata, var. angustifolia 

 (? S. glauca a sericea var. angustifolia Anderss.) and var. alpina from 

 Greenland of which I have spoken, 1. c. These forms need a very close 

 investigation, and I strongly believe, as I have already said, in Bot. Gaz. 

 lxvi. 353, that the true S. glauca is entirely absent from eastern North 



and by S. anamesa. 



ifol 



47. S. cordifolia Pursh— S. callicarpaea Trautvetter.— S. planifolia 

 Hooker. — S. alpestris c. americana Andersson. — S. arctica ft Brownei 



S°fumosa Andersson. — S. glauca Rydberg, pro parte.— S. Waghornci Ryd- 

 berg, pro parte.— S. labradorica Rydberg, pro parte.— See Schneider in 

 Bot. Gaz. lxvi. 343. 



47a. S. cordifolia f. hypoprionota Schneider in Bot. Gaz. lxvi. 346, 

 471). S. cordifolia f. atra Schneider.— S. atra Rydberg.— See Schneider 

 in Bot. Gaz. lxvi. 346. r 



47c. S. cordifolia var. Macounii Schneider. — S. Macounii Rydberg. 

 S. Rydbergii Heller.— S. vacciniformis Rydberg.— See Schneider in Bot. 

 Gaz. lxvi. 347. 



48. S. anamesa Schneider. — S. glauca Lange, pro parte. — See Schneider 

 in Bot. Gaz. lxvi. 348. 



40. S. lingulata Andersson.— See Schneider in Bot. Gaz. lxvi. 353. 

 Gandoger, (Fl. Eur. xxi. 157-158 [1890]), has proposed as what should 



be called subspecies of S. glauca the following names for forms from 



Greenland: S. eskimorum, S. groenlandica, S. platycarpa, and S. Vahlii. 



His descriptions are very unsatisfactory, and these forms cannot be re- 

 garded as species in our sense. I have not yet seen the types but I sup- 

 pose that these specimens only represent forms of S. anamesa. 



Sect. X. Wolfianae, sect, nov— Sect. Commutatae Ball apud Coulter 

 & Nelson, New Man. Rocky Mts. Bot. 134 (1909), pro parte.— Frutices 

 ut videtur satis parvi, erecti, ramis divaricatis. Folia matura firma 

 sed tenuia, lanceolata, oblanceolata, rhomboideo-oblanceolata and 

 elliptico-lanceolata, saepissime integerrima, utrinque concoloria et sub- 

 aequaliter stomatifera, plusminusve argenteo-sericea. Amenta plus- 



1 This form seems to bear some affinity to S. macrocarpa Andersson in 6fv. Svensk 

 Vet.-Akad. F6rh. xv. 124 (1858), non Nuttall; in Proc. Am. Ac. iv. 64 (Sal. Bor.-Am. 

 19) (1858); m Svensk. Vet.-Akad. Handl. vi. t. 7, f. 76 Cmala) (1867); in DeCandolle, 

 Prodr. xvi. 2 245 (1868), which is based on a specimen collected by Burke, Hudson 

 Bay, and has nothing to do with S. macrocarpa Nuttall ( -5. Geyeriana And.). I 

 have seen a photograph and fragments of the type (Herb. K.). It bears rather old 

 fruiting anient s, and agrees well with Andersson's description. The pedicels are al- 

 most as long as the bracts and densely hairy while the ovaries (fruits) are glabrous or 

 nearly so. A specimen collected by J. M. Macoun, at Churchill, on July 30, 1910 (No. 

 7915C, fr.; A., Cor., O.) has rather similar but entirely pubescent fruits. These forms 

 from the Hudson Bay Region need a caieful study, and I am at present unable to 

 interpret Andersson's form correctly. 



