234 



DE. AGNES AEBEE ON THE 



Fig. 3. General view of the same oblique section reproduced in fig. 1 after it had been further 



ground down to render it more transparent. Sedgwick Mus. Coll, Slide 281. ( x 7\ circa.) 

 The sporophyll and ligule shown in fig. 2 were destroyed in the grinding. 



(a». = apex of cone ; ?. = sporophyll; 5p. = spores ; s??m.w. = sporangium wall; s.a.p. = &\x\i- 



archesporial pad ; st.p. 



) 



Lepidostrobus Binneyanus, sp. nov. Fig. 4. 



Fig. 4. Transverse section of central part of cone axis. Binney Coll., Q. a. I. (x 45 circa.) The 



24. fiff. 23, and that marked 



t 



vascular cylinder ; p. = pith ; mx. = metaxylem ; px. = protoxylem ; i.e. = inner 

 cortex; «.c.5. = inner cortical sheath surrounding the sporophyll trace; /.;. = sporophyll 

 trace.) 



Plate 22. 



r 

 } 



Lepidostrobus Binneyanus, sp. nov. Figs. 5-8. 

 Fig. 5. Radial longitudinal section through vascular cylinder of cone axis. Binney Coll., Q. a. 6. 



( 



metaxylem; ^a?. = protoxylem ; ;?. = pith.) 



Fig. 6. Part of a transverse section of a cone passing through two sporophylls near the base of their 



upturned lobes and through sporangia. Binney Coll., Q. /3. 2. ( x 35 circa.) The cellular 

 outgrowth marked /.o.* is shown on a larger scale in PI. 25. fig. 30. 



{I. = sporophyll ; U. = vascular bundle of sporophyll ; spm.w. = sporangium wall ; 

 5j9. = spores ; j9C?.= periderm; ?.o. = cellular outgrowth from sporophyll.) 

 Fig. 7. Two sporophylls seen in tangential section. Binney Coll., Q. a. 4. ( x 47 circa.) 



{p.w. = wing of pedicel; *e.c.=lateral sclerised cushion of pedicel ; 6/.r. = median ridge of 

 tissue by which the sporangium is attached; k.p. = keel of pedicel; gp. = epidermis ; 

 %.=hypoderma; Z./. = vascular bundle of pedicel ; «pw.w. = sporangium wall.) 

 Fig. 8. Tangential section of the keel of another sporophyll from the same preparation as fig. 7, m 



which the conducting tissue is better shown. Binney Coll.^ Q. a. 4. ( X 47 circa.) 



(it .^. = keel of pedicel; sec. =lateral sclerised cushion of pedicel ; a?. = xylem ; /.^=trans- 

 fusion tracheides ; ep. = epidermis ; Ay. = hypoderma.) 



Lepidostrobus gracilis, sp. nov. Fig. 9. 



Fig. 9. A single sporophyll, cut almost radially, incomplete at the proximal end. 



Slide 276. ( 



Mus 



(/. = sporophyll lamina; se.^. = dorsal sclerised tissue of sporophyll; ;.A.=heel of sporo- 

 phyll; /.^.= pedicel of sporophyll.) 



Plate 23. 



Lepidostrobus gracilis, sp. nov. Figs. 10-12. 

 Fig. 10. General view of a longitudinal section through a cone, which is tangential in the middle an 



approximately radial at the sides. Sedgwick Mus 



) 



(/. = sporophyll; /.A,=lieel of sporophyll ; /X = sporophyll trace; ^.;?.=keel of pedicel; 

 p.w. = wing of pedicel ; sc c. = lateral sclerised cushion of pedicel ; spm.w. = sporaugmm 

 wall.) 



