KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 51. N:o |0. 19 
SzaAJNOcHA, L. 1888. Uber fossile Pflanzenreste aus Cacheuta in der argentinischen Republik. Sitzber. K. 
Akad. Wiss. Wien. Math.-nat. Cl. Bd. 98. Abt. 1. 
THomas, H. H., & N. BANcRoFT. 1913. On the Cuticles of some Recent and Fossil Cycadean Fronds. Transact. 
Linn. Soc. of London. 2nd Ser. Bot. Vol. 8. Part 5. 
ZEILLER, R. 1900. Elément de paléobotanique. 
——. 1903. Flore fossile des gites de charbon du Tonkin. 
Explanation of Plates. 
(All figures are in natural size, if not otherwise stated.) 
Plate I. 
Figs. 1—7. Piilozamites Nilssomi NATH. 
ING, De Upper portion of fig. 4, magnified, ”/i. 
SAR Portion of epidermis with a stoma, 250/,, 
AES: Ptilozamites fallax NATH. 
Figs. 9,10. Ptilozamites Blasii (BRAUNS) NATH. 
Plate 2. 
EROS Ptilozamites Blasii (BrRAUNs) NATH. 
RED, Ptilozamites Heeri NATH. 
Re Ptilozamites sp. 
Figs. 4, 5. Ptilozamites Carlssomi NATE. 
> 6, 7. Piilogamites fallax NATH. S 
IDR Wo Portion of epidermis with a stoma, "0/1. 
Figs. 8, 9. Piilogamites Nilssomi NATH. 
Fig. 9. Portion of cuticle with a stoma seen from below, "19/,. 
Plate 3. 
Figs. 1—3, 12. Piilogamites Heeri NATH. 
SL SAS Photographs of the cuticles. 
Fr 9 Ptilozamites Nilssomi NATH. 
Bios Portion of the lower cuticle with a hole, /1. 
SIS The same with a vein, 29/1. 
rang Lower epidermis; showing the distribution of the stomata, ??/1. 
DR 0) Ptilozamites Blasii (Brauns) Nate. Upper portion of a pinna; photo of the cuticle. 
0! Ptilozamites Carlssoni NarH. Upper epidermis; regenerated cutiele at the site of a former 
hole, 99/1. 
Tryckt den 27 juni 1914. 
Uppsala 1914. Almqvist & Wikeells Boktryckeri-A.-B. 
