20.') 



frequently orientatcd transvcrscly. Tlicy gcncrally possicss G noii- 

 papillatc subsidiary cells, 2 polar and \ lalcial ones. 



Occunciue: Kome and l^kkoiial, Ciieenlaiui. 



Geological agc: Lowcr Cretaceous. 



Sciadopitytes Hallei, sp. no v. 



Discovercd among douhle nocdles ol' Sciddopiliilcs ('nnneri. The 

 double needles of S\ Hallei are ;}() mm long and ca .*{ mm hroad. 

 On the under (?) side we lind a broad median slomalilerous groove, 

 which lacks papillae and whose margins are not so very conspi- 

 cuoiis. The non-slomatilerons groove of tlie iipper (?) side of the 

 symphyllodium or double ncedle is very distinct. The stomata 

 occur in longitudinal rows. The number of subsidiary cells is 

 4 — () (always 2 polar ones). 



Occurrence: Ekkorfat, Greenland. 



Geological age: Lower Cretaceous. 



Sciadopitytes Olafiana (Heer), coml). nov. 



This species was erronously described by Heer (1874) under the 

 generic name Pinus. The double needles of vS. Olafiana are ca 

 34 mm long and 3 mm broad. On the one side thcre is a median 

 stomatiferous and papillate groove. The stomata occur in longi- 

 ^dinal rows and the number of subsidiary cells is 6. 



Occurrence: Ekkorfat, Greenland. 



Geological age: Lower Cretaceous. 



Sciadopitytes Nathorsti Halle. 



Halle (1915) has given a detailed description of this species 

 from Atanekerdluk. Låter on (1920) Johansson discovered it in a 

 collection of jurassic plants from Andö, Norway. Furthcr I have 

 found the same species at Kome. 



Occurrence: Atanekerdluk and Kome, Greenland; Andö, Norway. 



Geological age: Middle (hetaceous — Upper Jurassic. 



Sciadopitytes? Staratschini (Heer), comb. nov. 



Heer (1874) has described this species as Pimis. It is, however, 

 probably a species of Sciadopihjles. The state of prcservation un- 



