76 PALÉOZOOLOGIE ET PALÉOPHYTOLOGIE 



Though the number of records is small, thèse spécimens are of particular 

 interest as being the oldest (in a geological sensé) terrestrial plants known 

 from England. The occurrence of a cupulate organ, Xenoiheca, whichis proba- 

 bly tbe first to be demonstrated in rocks of Devonian âge, is of importance 

 asending to confirai the conclusion that the Pteridosperms were an impor- 

 tant group even at this early period. 



On the vered question as to whether the higher part of the so-called Devo- 

 nian sequnece in North Devon, to which thèse spécimens belong, should not 

 be refeaed to the hower carboniferous, the known flora of the beds in question 

 sheds hardly any light. Whe should ad any rate not expect to find inthe 

 higher beds of the Devonian in Devonshire a flora markreclly dissimilar 

 from that of the British lower Carboniferous rocks elsewhere, nor in deed 

 is this the case. 



Of the tvvo species deseribed hère, one is a new type and the other is a 

 plant only known from the Devonian. The other gênera recorded and the 

 particular types themselves are similar to those occurring in the lower 

 Carboniferous. On the other hancl there is no plant represented which is 

 particulary claracteristic ot the lower Carboniferous. We there fore conclude 

 thad on the whole this flora is probably of Devonian âge, or ad least that there 

 is no évidence to be gained from the spécimens deseribed hère which is con- 

 trary to this view. 



R.-H. Goode. 



Reid, Clément, Armeria arctica Wallr. Fossil in Britain. Journ. Bot. 

 May, 1914. 



Records the occurence of this species in various glacial deposits in Britain. 



E.-M. Reid. 



Reid, Clément, The plants of the late glacial deposits of the Lea 

 Valley. Quart. Journ. Geol. Soc, vol. LXXI, part. 2 — 1916 — pp. 155- 

 161, pi. XV. 



Describes a fossil flora of 67 species from the Lea Valley, near London. 

 Many of the plants are arctic or alpine, many bave not hitterto been recorded 

 fossil, and two are extinct. 



I! y a lieu de signaler les nouvelles espèces ci-après : Silène eueubalus et 

 S. crclata distinctes de S. maritima, Linum prseeursor comparé à L. usila- 

 tissimum. dont des figures sont reproduites à titre de rapprochement. 



E.-M. Reid. 



Reid, Clément and Proves, James, Preliminary report on the Purbeck 

 ciiARACEiE. Proc. Roi) . Soc, B, vol. LXXXIX — 1916 — pp. 252-256, 

 pi. 8. 



Describes the results obtained by subjecting slices of limestone containing 

 Characeœ to a continued drip of slightly acidulated water. A great wealth 

 of material was accumulated, new types of fruits and végétative organs were 

 discovered, and a new genus Clavator, was deseribed. Its chief characters 



