Ingham : Sphagna. 397 



f. glaucovirens Schlieph. (Leckby Carr and Askham 



Bog.) 

 f. breviramosum W., sub-f. heterocladum W. (Castleton 



Moor), sub-f. orthocladum W. (Wheeldale). 

 f. compactum W. (Mid. W. Yorks.) Wheldon. 

 5. cymbifolium Ehrh. Very common. 



var. glaucescens W., f. sqnarrosulum Pers. (Near Sheffield) 

 Snelgrove, (N.E. Yorks.) Anderson, 

 sub-f. pycnocladum W. (N.E. Yorks.) Wheldon. 

 f. brachycladum W. (Skipwith Common.) 

 var. pallescens W. (N.E. Yorks.) Anderson, (S.W. Yorks.) 

 Needham, (N.W. Yorks.) Wheldon, (Skipwith Common), 

 f. laxum W. (Saltersgate Beck.) 

 f. confertum Wheld. (Fen Bog.) 

 var. flavescens W. (N.E. Yorks.) Anderson, (N.W. Yorks.) 



Wheldon, (Skipwith Common), 

 var. fuscescens W. (Cronkley pastures) Jones and Horrell, 

 (Fen Bog). 

 S. subbicolor Hampe. (Strensall Common) Wheldon. 

 S. medium Limpr. 



var. flavescens Russ., f. brachyanocladum W. (Cronkley 

 pastures) Jones and Horrell, (Leckby Carr and Farn- 



gill)- 



var. virescens W., f. abbreviatum W. (Mickle Fell) Jones 



and Horrell. 



var. roseum W. (Cronkley Fell and Mickle Fell) Jones and 



Horrell. 



f. squarrosulum W. (Mickle Fell) Jones and Horrell. 



f. abbreviatum W. (N.W. Yorks.) Jones and Horrell. 



var. purpurascens W. (Mickle Fell) Jones and Horrell 



(Fen Bog), 

 var. versicolor W. (Cronkley and Mickle Fells) Jones and 

 Horrell (Fen Bog). 



: o : 



Plant Materials of Decorative Gardening : Woody Plants, by William 

 Trelease. pp. 204, Urbana, 1917. In this little work Prof. Trelease has 

 attempted a very useful task in providing a means of identifying the 

 very miscellaneous garden material now used so largely in Botany Schools. 

 Only the woody plants are here dealt with, but over 1,150 species and 

 forms are described, which may be found in cultivation in the Eastern 

 United States and in Northern Europe. The plants are dealt with first, 

 by means of keys, in four sections viz.,, trees, shrubs, undershrubs and 

 climbers ; then follows a systematic arrangement with keys to the species 

 under each genus. There is a useful glossary and an index. The nomen- 

 clature adopted is that of Bailey's ' Standard Cyclopedia of Horticulture.' 

 The British botanist will find many inequalities and omissions, but these 

 are inevitable. Only three species of Erica are given, but he includes no 

 fewer than seven forms of Calluna vulgaris ! 



1917 Dec. 1. 



