FOSSIL FLORA OF THE STAFFORDSHIRE COAL FIELDS. 189 



Fig. 6. Polypterospermum ornatum Kidston. 



Part of another specimen showing ornamentation on surface between the wings and the narrow 

 wing on the matrix at the right-hand side. Natural size. Same locality and horizon 

 as last. (K. No. 4648.) 

 Fig. 7. Polypterospermum ornatum Kidston. 



Small specimen with wings. Natural size. Locality — Clayscroft Openwork, Coseley. 

 Horizon — Ten-foot Ironstone Measures. 

 Fig. 8. Polypterospermum ornatum Kidston. 



Crushed specimen showing upward prolongation of the wings beyond the apex of the seed. 

 Natural size. Same locality and horizon as last. 

 Fig. 9. Polypterospermum ornatum Kidston. 



Large crushed specimen showing the furrows originally occupied by the wings, and their points 

 projecting past the apex of the seed. Natural size. Same locality and horizon. 



Plate XV. 

 Figs. 1-10. Whittlesey a ? fertilis Kidston. 



Fig. 5a. Enlarged 4 times. 



Fig. 6. Natural size. 



Figs. 6a and 6/;. Enlarged 2 times. 



Figs. 7, 8, and 9. Enlarged 2 times. 



Fig. 10. Microspores enlarged 50 times. 



Fig. 1. Natural size. 



Figs, la and lb. Enlarged 2 times. 



Fig. 2. Natural size. 



Figs. 2a and 2b. Enlarged 2 times. 



Figs. 3 and 4. Natural size. 



Fig. 5. Natural size. 



For description, see text. 

 Fig. 11. Whittlesey a elegans Newberry. 



Leaf natural size. Locality — Doulton's Clay Pit, Netherton. Lent by Mr H. Hamstead 

 Thomas. 



Plate XVI. 



Fig. 1. Samaropsis quadriovata Kidston. 



Seed natural size. Locality — Jubilee Pit, Sandwell Park, West Bromwich. Horizon — Blue 

 Measures, six feet above Brooch Coal. (K. No. 3770.) 

 Fig. la. Samaropsis quadriovata Kidston. 



The same seed, enlarged 2 times. 

 Fig. 2. Samaropsis Gutbieri Geinitz, sp. 



Natural size. Locality — Clayscroft Openwork, Coseley. Horizon — Ten-foot Ironstone Measures. 

 Figs. 3 and 4. Sphenopliyllum tenuissimum Kidston. 



Two halves of nodule. Natural size. Locality — Clayscroft Openwork, Coseley. Horizon — 



Ten-foot Ironstone Measures. 



Fig. 4a. Sphenophyllum tenuissimum Kidston. 



Same specimen, enlarged 2 times. 



Fig. 5a. Sphenophyllum tenuissimum Kidston. 



Group of united sporangia, of which three are shown but the fourth is broken off. Enlarged. 

 From same specimen. 

 Fig. 6. Rhabdocarpus Oliveri Kidston. 



Natural size. Locality — Clayscroft Openwork, Coseley. Horizon — Ten-foot Ironstone Measures. 

 Fig. 6a. Rhabdocarpus Oliveri Kidston. 



The same specimen, enlarged 2 times, a, micropyle ; b, pollen chamber ; c, upper part of 

 nucellus ; d, stony layer of seed (Sclerotesta) ; e, remains of contorted prothallus ; /, cavity 

 left through decay of soft layer of seed (Sarcotesta), now filled with lime. 

 TRANS. ROY. SOG. EDIN., VOL. L. PART I. (NO. 5). 25 



