SAGENOPTEEIS 133 



V. 2272. PI. IX. Pig. 4. 



Five leaflets are shown in this specimen, but the middle one 

 of the upper three projects beyond the others, and its median 

 line lies somewhat across those of the four palmately -placed 

 segments. There is a distinct indication of the upper end of the 

 leaf-stalk. In some of the leaflets the venation is feebly indicated, 

 but in all of them there is an obvious median groove which 

 becomes more distinct towards the point of attachment. 



This apparent midrib is not nearly so distinct in V. 2353, PI. IX. 

 Fig. 5, and, indeed, were the latter the only available specimen, 

 one would describe the leaflets as without a median vein. The 

 midrib seems to be best represented in those specimens where 

 there is some carbonaceous material on the surface; it appears as 

 a median depression widening towards the base. Cf. Sagenopteris 

 rhoifolia, Presl, var. elongata, Braun., and 8. rhoifolia, Presl, 

 var. pusilla, Braun., as represented by Schenk in his "Foss. 

 Flor. Grenz.," pi. xii. Ecclesbourne. Rufford Coll. 



V. 2353. PI. IX. Fig. 5. 



In this leaflet the venation is particularly clear; there is no 

 distinct indication of a midrib. Cf. Velenovsky, loc. eit. pi. ii. 

 figs. 1-5; also Zigno, Flor. foss. Oolit. vol. i. pi. xxi. fig. \b. 

 Ecclesbourne. Rufford Coll. 



V. 2300. Ecclesbourne. Rufford Coll. 



V. 23530. Large leaflets. Cf. Schenk, 1 pi. xxxi. fig. 5, and 

 Dunker, 2 pi. ix. fig. 5. 



V. 23533. These leaflets agree in shape and in the form of the 

 venation with V. 2353 (PI. IX. Fig. 5) ; there is a more distinct 

 indication here of a median depression, owing, probably, to the 

 fact that carbonaceous matter is present in this specimen. 



V. 2353(7. Two leaflets ; in the smaller spathulate one very 

 good venation. 



V. 2353</. A small leaflet like the two lowest in Fig. 4, PI. IX. 

 (V. 2272). Ecclesbourne. Rufford Coll. 



1 Palaeontographica, vol. xix. 



2 "Wealdenbildung. 



