£2 JOURNAL OF THE ARNOLD ARBORETUM [vol. i 



Saskatchewan, northeastern Alberta, Athabasca and the Northwest Ter- 

 ritories as far north as Great Bear Lake. Apparently S. serissima and 

 S. lasiandra have been taken for S. lucida of which the northeasternmost 

 locality from where I have seen material is the Hill (or Hayes) River in 

 Manitoba (R. Bell, August, 1880, No. 24585, fr.; O.). But it seems very 

 rare (or represented by S. serissima) in these regions and in western 

 Ontario, becoming frequent to the east of Lake Huron in southeastern 



Ontario and southern Quebec. 



As Fernald has pointed out the typical S. lucida in the northeastern part 

 of its range is frequently represented by var. intonsa Fernald in Rliodora 

 VI. 2 (1903) (S. lucida var. macrophylla Fernald apud Williams in Rhodora 

 HI. 277 (1901), non Andersson) which chiefly differs by the characters indi- 

 cated in the key, p. 3. In this region occurs besides var. intonsa a narrow- 

 leaved form to which the name f. angustijoUa Andersson has been applied. 

 Andersson published this name in 1858 (in Ofv. Svensk. Vetensk. Akad. 



Forh. XV. 115) as 



(i 



'7' 



cuspidatis," and he did not cite a type but he added as a subforma ' — 

 lasiandra Bth." In Proc. Am. Acad. Sci. iv. 54 (Salic. Bor.-Am. 8) (1858), 

 the arrangement differs in so far that we read " var. angustijoUa. — Forma 

 lasiandra (S. lasiandra, Benth. . . . ) " and there is added a " Forma pilosa' 

 which in (')fv. Svensk. Vetensk. Akad. Forh. xv. 115 (1858) was kept as a 

 variety of the same taxonomic value as angustijoUa. This f. pilosa has 

 nothing to do with the narrow leaved form in question (see p. 10). In 

 1867 (in Svensk. Vetensk. Akad. Ilandl. vi. 32 [Monog. Salic.]) Andersson 

 again kept a variety angustijoUa but here he made the two forms rigida and 

 tenuis. What he called rigida apparently belongs to S. serissima (sec p. 

 13), while f. tenuis can hardly be correctly inter])reted without type ma- 

 terial. Much clearer is Andersson's statement in 1868 (in De Candolle 



Prodr. XVI. ^ 205) where he 



'/' 



anguste lanceolatis, basi subattenuatis, apice vulgo longius attenuatis. 

 Locis alpestribus." We may apply this name to the narrow-leaved north- 

 eastern form, but in many respects it would be better to propose a new njimc 

 for it because the ajjplication of Andersson's name is far from clear. 

 a f. angustijoUa occurs in the typical S. lucida as well as in var. intonsa, 

 judging by the material before me. Its obtuser leaves often resemble those 

 of a young plant or of a seedling of the tyi>e, while the normal up])cr leaves 

 may be described as: e basi obtuse cuneata lanccolata, plus minusve sen- 

 slm longe caudato-acuminata, ad 5:1-10: 1.5 cm. magna. 



Sect. IV. Bonplandianae Schneider. See Bot. Gaz. lxv. 15 (1918). 

 S. Ilarbisonii with brittle-jointed branchlets needs further investigation 

 and is referred to this section only provisionally. 



8. S. jaliscana Jones. — See key, p. 4 and Schneider in Bot. Gaz. lxv. 

 16 (1918). 



