276 Anatomie, 



Sanio's first law cannot be applied to conifers. For a certain pe- 

 riod the length of the tracheids increases, at the end of this period 

 there is a marked falling off in the length of the tracheids. Subse- 

 quently the tracheids again increase in length. In one case (long 

 leaf-pine) the tracheid length reaches a maximum at 160 years and 

 decreases, with one marked period of recovery, during succeeding 

 rings. Jongmans. 



Briquet, J., Sur la structure foliaire et les affinites des 

 Saxifraga moschata Wulf, et exarata Vill. (Annuaire Cons. et 

 Jard. bot. Geneve. XVIII/XIX. p. 207—214. 1915.) 



Mit Cavillier ist der Verf. dafür, die genannten zwei Sippen 

 als Unterarten (ssp. eu exarata und ssp. moschata [Wulf.] Cav.) einer 

 und derselben Art (5. exarata s. lat.) unterzuordnen. Denn den 

 morphologischen Unterschieden im Laubblatt entsprechen wohl 

 auch solche im anatomischen Bau, aber nur bei recht typischen 

 Stücken. Sonst herrscht auch da eine intermediäre Ausbildung. 



Matouschek (Wien). 



Chrysler, M. A., The medullär y rays of Cedrus. (The Bot. 

 Gazette. LIX. p. 387—396. 7 Fig. 1915.) 



The meduUary rays of Cedrus are provided with a margin which 

 varies greatly in composition, being made up of tracheids and pa- 

 renchyma in varying proportion, or devoid of marginal cells for 

 considerable Stretches. 



Marginal parenchyma when present occurs at the limit of an- 

 nual rings, and may also extend beyond this point so as to be 

 more plentiful than ray tracheids. 



The constant occurrence of marginal parenchyma cells at the 

 limit of annual rings, and their close connection with resin cells, 

 indicates that parenchyma has replaced tracheids in connection with 

 secretion of the so-called resin. 



The marginal cells in Cedrus show distincl evidence of being 

 in a degenerating condition. 



The medullary ray structure confirms the view that Cedrus 

 Stands intermediate between Pinus and Ahies. Jongmans. 



Holden, R., On the cuticles ofsome indian conifers. (The 

 Bot. Gazette. LX. p. 212-227. PI. 11. 1915.) 



A comparative study of living and fossil conifers indicates that 

 epidermal structures are of great value for accurate specific diagno- 

 ses, but of relatively little importance for indicating affinities. 



On account of the character of its cuticle, the so-called Palissya 

 indica of Feistmantel cannot properly be referred to that or any 

 other fossil genus; and to point out its resemblance to the living 

 Retinospora, it is suggested that it be called Retinosporites indica. 



Echinostrobus expansus closely resembles many living members 

 of the Cupressineae , both in epidermis and in phyllotaxy; accordingly 

 it would seem better to retain the old name of Lindley and 

 Hutton, Thuyites expansus. 



Taxites tenerrimus has a type of cuticle common to many extant 

 conifers, and its affinities cannot be decided. 



The epidermal structure of Podosamites lanceolaius constitutes 



