16 HALLE, ON THE SWEDISH SPEOIES OP SAGENOPTERIS PRESL AND ON HYDROPTERANGIUM NOV. GEN. 



Figs. 15 — 23. Sagenopteris Nilssoniana Brgn sp., from Hoer. 



Fig. 15. Petiole and two pinna', spread out horizontally. 



Figs. 16 — 18. Small leaves with broad pinnae and indistinct itiidi-ibs. 



Fig. 19. Three pinnae of typical shape. 



» 20. Type-specimen of Nilsson (1. pl. 5, tig. 3) and Brongniart 11. pl. Il', lig. 1 1. 



Figs. 21, 22. Typical specimens, showing midrib and lateral veins. 



Fig. 23. Portion ni' specimen fig. 22. f. 



Pl. 3. 



Figs. 1—5. Sagenopteris undulata Nath., from Bjuf. 



Fig. 1. Lower cuticle, showing anastomosing rows of elongated cells. ^ . 



» 2. Portion of the same cuticle, with stomata. 1 f°. 



3. Another specimen, to the riglit a broad zone of rectangular cells covering the midrib. ■y. 



» 4. One of t lie stomata, 2 f°. 



5. Lower cuticle of the petiole of the specimen pl. 1. tig. .">. 



l 8 



l ■ 



Figs. 6 — 11. Sagenopteris Nilssoniana Brgn. sp., from Pålsjö. 



Figs. 6", 7. Lower cuticle, showing dark cells (bases of epidermal hairs) and stomata. Fig. 6: -1 -i°. P^ig. 7 : 'y. 



» 8, 9. Stomata. 2 f°. 



Fig. 10. One of the dark cells of the cuticle tigs. (i and 7, with projecting remains of a hair. 2 f°. 



» 10 a. Somewliat schematic drawing of d:o. a y°. 



Fig. 11. Sagenopteris Nilssoniana Brgn. sp., from Hoer. -- Upper cuticle. 



Figs. 12-15. Hydropterangium marsilioides nov. gen. et sp. from Hyllinge (from the specimen 



pl. - J , hg. 12). 



Figs. 12—13. Surface-view of epidermis. Fig. 12: V'- Fi g- 1;5: 1 f°- 

 » 14, 15. Pores. 2 f°. 



» lti and 17. Spores of unknown kind. Fig. 16 from the specimen pl. 1. tig. 2. -f°. - Fig. 17 from 

 an isolated spore. 5 ^°. 



IVyekl <lcn 22 april 1910. 



Uppsala 1910 llmqvlst <S Wiksells Boktryckeri-A B 



