XXVl] SAGENOPTERIS 481 



Frond ijetiolate, in some forms the petiole bears four linear or oval- 

 lanceolate leaflets having a distinct midrib and oblique anastomosing 

 veins. In others a shorter winged petiole bears one or two shorter and 

 broader, somewhat obcuneate, leaflets without a midrib. 



It is probable that Bunbury' was correct in his opinion that 

 the specimen figured by Lindley and Hutton^ as Otopteris 

 cuneata, characterised by two leaflets (fig. 328), is not specifically 

 distinct from the normal form with four leaflets (fig. 327). 



Similarly, such specimens as that represented in PL xviii., 

 fig. 3 of the first part of my Jurassic Flora, in which a short 

 stalk bears only one leaflet may, provisionally at least, be 

 included in Brongniart's species. Yabe' describes a form with 

 two leaflets from Jurassic rocks of Korea as Sagenopteris 



Fig. 328. Sagenopteris Phillipsi. From a specimen in the Manchester Uni- 

 versity Museum. Nat. size. 



bilobata which resembles 8. Phillipsi; and Moeller'' records 

 a specimen similar to that represented in fig. 328 from 

 Bornholm as S. cuneata (Lind. and Hutt.). 



The leaf shown in fig. 327, A, in which the longest segments 

 are 4'5 cm. in length, represents the most abundant form and 

 illustrates the very close agreement between S. Phillipsi and 

 the Rhaetic species S. rhoifolia. Fig. 327, B, which is dravm 

 fi:om a specimen figured by Lindley and Hutton^, shows a leaf 

 with longer (6'5 cm.) and much narrower segments. Broader 

 leaflets are occasionally met with in which the lamina reaches 

 a length of 11 cm.^ 



Leaves with leaflets narrower (3 mm. broad) than those 



^ Bunbury (51) A. ^ Lindley and Hutton (35) A. Pi. clv. 



3 Yabe (05) PI. iii. fig. 16. * Moeller (02) PL vi. fig. 10. 



s Lindley and Hutton (33) A. PI. lxiii. fig. 2. « Seward (00) p. 169, fig. 26. 



