6 ARKIV FOR BOTANIK. BAND 10. w:o 14. 
Explanation of Plates. 
Cloughtonia rugosa n. sp. 
Pleat. 
Fig. 1. Small specimen showing contracted basal portion. 
Figs. 2—3. Petiolar basal portions. 
Figs. 4—5. Typical specimens. 
Fig. 6. Counterpart of the specimen shown in fig. 5. 
Fig. 7. Portion of the specimen shown in fig. 6. 
PIA: 
Fig. 1. The specimen first found by Prof. NATHORST. 
Figs. 2—3. Portions of the same specimen, showing venation. 
Fig. 4. Epidermis of the lower side. 
Fig. 5. Epidermis of the upper side. 
Tryckt den 14 juli 1911. 
Uppsala 1911. Almqvist & Wiksells Boktryckeri-A.-D. 
