REVISION OF COMPTONIA 



501 



Durin«: the time that Compfonia microph i/lla Heer was spread- 

 ing southward along the Atlantic coastal ]»lani m Aincnca, a very 

 similarly leaved plant had reached Kurope hv wav ot tlie Scandi- 

 navian peninsula. I'his species is rej)resented l)v the leaf which 

 Nilsson described m \SS2 from the dreensand of Kopmge, Sweden. 

 That this species hecame more wi(les))rea(l m Europe than the 

 fossils which have been discovered show, is indicated l)y its occur- 

 rence at almost the opj)osite end of Kurope in the ( enomanian ar 



It was a small leaf with a tew rounded lobes and wa-> vcrv muh- 

 lar in appearance to its Arctic an<l American conwvncis. In >ize 



panula and nu< >up/n//la paitidilaiK the Litu.uhile \\ lot 

 the tomui 1^ indi>tinuuidial)l( fiom the Ijiiopian leat \e^^- 



pointed lobes, and Ileer's parn flora is aUo -oincwhai laiucr. 



The occurrence ot this same tvj)(^ ot leaf on ilic -cciHinus of the 

 modern plant, and as the earliest known ( ()iiij)roiiia Icavo in tlie 



Comptoma tenera 1 los. \- v. d. Marck 



fnnm antnpm o, ih, nn.l-( Mta'.on. th,-~ ^j-m . .^huU 



IIoMii. and ^nu du Mar.k tonnd n. iIm npp. , non an ot W.m- 

 phaha al llopni^ui tin., and oni halt miK - u.^l ol Mnn^-u 

 The\ (onipaie it to M /nu, <h /<'>^'/>" r'^'<' l^'""- ^ 



thmki. i.hntK.'duith DnKUuha hinn<,nHnh Iauw'^ tioni lining 

 both (>t^^ huh .pMH.fh.N uould uUi to tlu truHi^ ( oniptoina 



