HYPERICUM Sp. 5. 

 PI. XIII, fig. 24. 



Seed of medium size, cylindricakfusiform; testa with about 18 rows of hexagonal 

 pits elongate transversely in the proportion 2 to 1, giving the rows of pits a ladder#like 

 appearance. 



Length 1.0 mm., breadth 0.5. mm. Reuver. 



Only one seed of this well-marked species has been seen. 



VIOLACEAE. 



VIOLA Sp. 1. 



Three seeds from Swalmen undoubtedly belong to the genus Viola, one appears 

 to be unripe, the other two are broken, probably in germination. The seeds of the different 

 species in this genus, however, so closely resemble one another, that in the absence of 

 better material it would be useless to attempt any specific determination. As the small 

 unripe seed is more coarsely pitted than the other two, it may belong to a different 

 species. We have not figured these seeds. 



Length about 1.3 mm. Swalmen. 



VIOLA Sp. 2. 

 PI. XIII, fig. 26. 



A seed from Brunssum seems different from either of those from Swalmen. It 

 is somewhat crushed ; but we have photographed it side by side with a seed of V. lutea 

 (fig. 25), to which it bears considerable resemblance. 



Length 1.5 mm., breadth 0.9 mm. Brunssum. 



VIOLA Sp. 3 (cf. V. RUPESTRIS). 

 PI. XIII, fig. 27. 



Two seeds from Reuver represent a third species of Viola, larger than either of 

 the others, and of a different shape. It resembles the living V. rupestris more than any 

 other with which we have been able to compare it. 



Length 2.3 mm., breadth 1.4 mm. Reuver. 



GENUS? 



PI. XIII, figs. 28-30. 



Seed broadly ovate or globose, bluntly pointed; chalaza large flat round; raphe 

 external ; surface of testa finely pitted, black. 



Length 2.5 mm., breadth 2.3 mm. Reuver, Swalmen. 



120 



