148 JOURNAL OF THE ARNOLD ARBORETUM [vol. i 



ern British Columbia which looks to me like a new species and has been 

 provided with a name by the collector. Unfortunately this name has been 

 used before and cannot be used again. Therefore, I think it best not to 

 describe it as a new species as long as I have not had an opportunity to study 

 more copious materiah I shall speak of this form under S. Barclayi. 



S, orestera is in some respects rather intermediate between *S. Eastwoodiae 

 and S. Lemmonii but the relationship of this species seems to lie with S. 

 Geycriana which belongs to another section with which I shall deal later. 



Wolji 



monticola. 



first 



believe it represents a group of its own of which I shall speak later, A 

 very uncertain form is S. latiuscula mentioned later under S. Barclayi, 



As to the name of this section, 1 wish to say that in 1904 1 took S. adeno- 

 pkylla for the type of a new section, and I referred S. Barclayi to the Has- 

 tatae, a section I now believe not represented in the New World, In 

 1909, Ball created the section Commutatae, probably not knowing my older 

 name, therefore the synonymy of the group is as follows: Sect. Adenophyllae 

 Schneider, 111. Ilandb. Laubholzk. i. 52 (1904). — Sect, fl'a^fa^a^' Schneider, 

 I.e. 51, quoad S. Barclayi, — Sect. Commiitatae Ball apud Coulter & Nel- 



Wolfi 



be 



if< 



species shows a closer relationship with S, Candida of which I shall speak in 



anotlier note. 



Before I take up the discussion of the different species and varieties I 

 wish to state that I base my investigations on the same collections men- 

 tioned in note 3, on p. 1 of this journal, and I beg leave to oflFer my very best 

 thanks to the gentlemen in charge of all these herbaria, and also to Miss A. 

 Eastwood, San Francisco, Professor J. K. Henry, Vancouver, and Mr, J. 

 C. Nelson, Salem, Ore. 



CLAVIS SPECIERUM 



Planta prostrata; folia parva, vix ad 3.5: 1.5-2.1 cm. magna, late obovata (fere 

 suborbicularia) ad obovato-oblonga, basi cimeata, apice plus minusve rotundata, 

 margine dense (saltern infima) et acute glanduloso-serrulata, subtus vix vel satis 

 pallidiora; amenta coetapea; filamenta glabra, fructus plus minusve breviter griseo- 



villosuli, subsessiles 1. S. Chamissonis. 



Plantae erectae et aliis signis diversae. 



Folia matura normalia subtus discoloria, glaucescentia vel albcscentla; filamenta 

 semper glabra; ovaria pedicellique glabri (si pedicelli sunt pilosi vide *S. mon- 

 ticolam, si ovaria fructusve sunt sparse villosi vide S. Barclayi var. hebecarpam). 

 Folia novella et saepe matura laxe vel densius (saltem superne) pubesccntia, in 

 epidermide pleraque estomatifera; ramuli novelli et saepe annotini laxe vel 

 densius villosi; amenta pleraque coetanca et pedunculis distinctis foliolatis 

 suffulta; bracteae saepissime lanceolatae et satis acutae, atrofuscae, longe 

 scriceae; fructus 6-9 mm. longi. pedicello 1-2 mm. longo excluso; styli 1-2 mm. 

 long! (in formis S. glaucophylloidis ramuli sunt plus minusve tomentosi sed 

 folia costa excepta cito glaberrima) 2. iS. Barclayi. 



