﻿102 



PEOF. A, C. SEWARD OX 



[Feb. 1908, 



a fairly-close resemblance to the fossil reproduced in fig. 7 in 



the form of the woody axis and 

 ^ig- 7. — Strobilites laxus, sp. in the arrangement and shape of 

 my. : axis of stroUlus the appendages. In the absence 

 iviih appendages, one-half of seeds it is rash to carry the 

 n-P ii.^ ..r.u...r,i o,v. comparison further. Among fossil 



species the reproductive shoots of 

 Voltzia bear a fairly-close re- 

 semblance to the Orange- River 

 specimens: the bracts of Voltzia 

 hrevifoUa figured by Brongniart ^ 

 are similar in their corrugated 

 surface to those shown in the figure. 

 Similarly, V. cobwyensis ^ from the 

 Keuper of Stuttgart (although 

 smaller) is characterized by similar 

 bracts, as also F. Jieterophylla ^ as 

 well as examples of the same 

 genus figured by various authors 

 Irom Triassic and Permian rocks.'' 

 A somewhat similar type is repre- 

 sented by Heer's genus Lepto- 

 strohus from the Jurassic of Siberia.^ 

 Schiltzia anomala, Gein., as figured 

 by Goeppert « from Permian rocks, 

 differs from Strobilites laxus in 

 the form of the appendages; and 

 Kenault's Cycadospadix millery- 

 €/isis,"though presenting a superficial 

 likeness to the African strobilus, 

 probably is generically distinct! 

 Some detached bracts associated 

 with pieces of vegetative twigs 

 from Ehaetic or Jurassic rocks of 

 German East Africa, which Dr. 

 Potonie^ has described under the 

 name Voltziopsis, may also be com- 

 pared with the larger sporopbylls shown in PI. Y, fig. 3. 



1 Brongniart (28) pp. 447, 449 & p]. xvi. 



2 Schenk in Zittel (90) fig. 199, p. 290. 

 ^ Schimper (74) pi. Ixxiv. 

 ^ Schimper & Mougeot (44) pis. Ti-x\ 



pi. vii. 



5 Heer (77) pi. xiii, figs. 10-15. 

 ^ Goeppert (64) j). 161 & pis. xxiii-xxiv. 

 •^ Eenault (93) pp. 329-31 & pi. Ixxiii. 

 ^ Potonie (00) p. 504, fig. 29 



Heer (76) pi. xxii ; Schiitze (01) 



