THE JURASSIC FLORA OF SUTHERLAND. 



707 



EXPLANATION OF PLATES. 



I gratefully acknowledge a grant of £20 made by the Royal Society of London towards the cost of the 

 Plates. 



With a few exceptions, where the magnification or reduction is stated, the specimens are represented 

 natural size. 



I am indebted to my Wife for giving me much assistance with the drawings. — A. C. S. 



Figs 



. 1-4. 



)> 



5-' 



13. 



!> 



14- 



-17. 



Figs 



.18, 



18A. 



Fig. 



19. 





>> 



19a 





Fig. 



20. 





)> 



21. 





Figs 



. 22- 



-24. 



!) 



25, 



26. 



>> 



27, 



27A. 



)) 



28, 



29. 



Fig. 



30. 





>) 



31. 





Figs 



. 32- 



-36. 



!> 



37, 



37A. 



Fig. 



38. 





Figs 



.39, 



39A. 



Fig. 



40. 





Figs 



• 41, 



41A. 



Plate I. 

 Sagenopteris Phillipsi Brongn. 

 Laccopteris Dunkeri Schenk. Fig. 12, x 6. 

 Hausmannia dichotoma Dunk. 

 Hausmannia Rlclrteri sp. now 

 Hausmannia dichotoma Dunk. var. linearis Richt. 

 Spiropteris (1 Gleichenites). 



Plate II. 

 Hausmannia dichotoma Dunk. 

 Hausmannia Buchii (And.) ( x 6). 

 Sphenopteris onychiopsoides sp. now 

 Matonidium Goepperti (Ett.). 

 Todites Williamsoni (Brongn.). 

 Marattiopsis Bmoeri sp. nov. 



Cladophlehis sp. cf. C. haiburnensis (Lind. and Hutt.). 

 Cladophlehis denticulata (Brongn.) ( x 2). 

 Cladophlehis denticulata (Brongn.). Fig. 32, x 7. 

 Thinnfeldia arctica Heer. 

 Cladophlehis denticulata (Brongn.). 

 Txniopteris sp. 

 Bhizomopteris Gunni sp. nov. 



Gunn collection (British Museum). 



Gunn. coll. 



Fig. 28, Gunn coll. 

 Fig. 29, Arber coll., Sedgwick 

 Museum, Cambridge (525). 

 Gunn coll. 

 Arber coll. (517). 

 Gunn coll. 



Peach coll. (Brit. Mus.). 

 Arber coll. (523). 

 Gunn coll. 



Plate III. 

 Bhizomopteris Gunni sp. nov. Gunn. coll. 



A', A, B, ground-tissue S, stele. 



Fig. 41, xl2; fig. 41A, part of fig. 40 enclosed by line a, 

 enlarged. 

 ,, 42, 42A, 43, 43A. Gleichenites Boodlei sp. nov. ,, 



Fig. 42. a-b, plane in which the section shown in 42A, 43, 



43 A was cut. 

 Fig. 43. One of the arms of fig. 42 maguified 19 diameters. 

 X, xylem ; P, phloem and pericycle ; c, c", c", zones of 

 cortex. The line a encloses the portion enlarged in fig, 43 A. 

 Fig. 43A. Portion of stele of fig. 43 enlarged. Mx, meta- 

 xylem ; Px, protoxylem ; P, phloem. 

 ,, 44, 45, 46, 46A. Coniopteris hymenophylloides (Brongn.). Fig. 46«, x 4, Figs. 44, 45, Gunn coll. 



Figs. 46, 46A, Peach coll. 

 Fig. 47. Cladophlehis sp. Peach coll. 



Figs. 48-54. Gleichenites cycadina (Schenk). Fig. 49, x 7. Figs. 48, 49, 51, 53, 54, 



Gunn coll. 

 Fig?. 50, 52, Arber coll. (505, 496). 

 ,, 55, 55A. Dichopteris Pomelii (Sap.). Gunn coll. 



TRANS. ROY. SOC. EDIN., VOL. XLVII. PART IV. (NO. 23). 104 



