XLVIl] SEQUOIITES 351 



undivided leaf-trace enters each decurrent leaf-base; there is a 

 central large resin-canal in the leaves and a considerable develop- 

 ment of transfusion- tracheids on each side of the secretory passage. 

 Palisade-cells are a conspicuous feature and one or two layers of 

 hypoderm fibres occur next the lower epidermis. The author of 

 the species points out the close resemblance between the fossil and 

 the leaves and shoot-axis of Sequoia gigantea. 



Sequoiites concinna Heer. 



Heer 1 described several specimens of foliage-shoots and cones 

 from the Patoot beds in West Greenland as Sequoia concinna, the 

 commonest Conifer in these rich Lo\ver Cretaceous strata. The 

 form of the sparsely branched shoots with their long and slender 

 branchlets and straight or slightly curved, decurrent, acuminate, 

 leaves (fig. 765) agree closely with those known as Sphenolepidium 

 Sternbergianum from English and other Wealden rocks, as also with 

 the shoots of Sequoiites Couttsiae. The oval cones, 23 x 20 mm., 

 consist of a few scales with 5 6 angled thick distal ends on which 

 there is a median transverse line and a central scar. 



This species, represented by sterile shoots and cones, has recently 

 been recorded by Berry 2 from Upper Cretaceous beds in Pike 

 County, Arkansas. 



Conites. Conites Gardneri (Carruthers). 



Carruthers 3 described a cone and a piece of vegetative shoot 

 from the Gault of Folkestone as Sequoiites Gardneri but neither 

 specimen affords any satisfactory evidence of relationship with 

 Sequoia. The shoot is of the Pagiophyllum type, and the cone, 

 2-5 x 1-5 cm., consists of spirally disposed scales with four-sided 

 rhomboidal distal ends. There is no information with regard to 

 the seeds : the data being wholly insufficient to serve as a criterion 

 of affinity, the generic name Conites is substituted for Sequoiites. 

 A specimen figured by Lange 4 from the Aachen Sands as Carpolitnes 

 hemlocinus Schloth. and compared by him to a Sequoia cone agrees 

 closely with the English species. 



1 Heer (83) p. 13 ? Pis. LI., LII., etc. 



2 Berry (17) p. 172, PI. vn. figs. 15. 



3 Carruthers (69 2 ) p. 7, PL I. figs. 7, 8. 



4 Lange (90) PI. xxxn. fig. 7. 



