URTICACEAE Sp. 4. 

 PI. VI, fig. 5. 



Nut roundly ovate, somewhat truncate at base mucronate at apex, compressed, 

 broadly margined, rough. 



Length 1.2 mm., breadth 1.2 mm. Swalmen. 



This nut, of which we have only seen one specimen, not well preserved, resembles 

 that of the genus Girardinia. 



URTICACEAE Sp. 5. 



PL VI, fig. 6. 



Nut ovate cordate at base pointed at apex, compressed, slightly margined, rough. 

 Length 1.8 mm., breadth 1.4 mm. Reuver. 



The unique nut of this species may belong to the same genus as the nut from 

 Swalmen just described, but they do not belong to the same species. 



URTICACEAE? 



PI. VI, figs. 7, 8. 



The small nuts here shown seem also to belong to Urticaceae, but they are not 

 sufficiently well preserved for description; they do not correspond with any of the 

 species already described. Swalmen, Reuver. 



The small number of specimens belonging to Urticaceae is due largely to the 

 difficulty found in collecting them. In the clay of Tegelen small seeds were abundant, 

 and many species could be found in a small amount of material. In the Reuverian 

 deposits, on the other hand, small seeds are few and far between. So much time was 

 therefore needed to examine a large amount of the finer material, that it was found more 

 profitable to concentrate attention on the coarser material, for this latter contained 

 numerous large fruits and seeds of which the anatomy could be better made out. Except for 

 these Urticaceae, and an occasional seed of Hypericum, there is little in the finer material, 

 Batrachium and other small fruits common at Tegelen being absent. 



PROTEACEAE. 



The occurence or nonoccurrence of the Proteaceae in European Tertiary strata 

 has been so hotly debated, and so many of the leaves so described have proved to 

 belong to other orders, that only with the greatest hesitation do we venture to bring 

 forward a fresh piece of evidence. In this case, however, we are not forced to rely on 

 the somewhat ambiguous pattern taken by the venation of a leaf, which in the Proteaceae 

 happens to be a character of little diagnostic value. In the Pliocene deposits of Brunssum 

 has been found the half of a hard woody fruit, so like that of Hakea, and so unlike 



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