part 2] PRECLACIAL FLORAS FROM CASTLE EDEN. 131 



GUTTIFERJE. 



Hypericum sp. ( = Eeuverian sp. 3, pi. xiii, fig. 22). (PI. IX„ 

 fig. 15.) 



Seed oblong, sharply contracted at both ends, terete ; outer- 

 coat of small cells arranged in irregular rows ; inner coat (seen at 

 the burst end) of interlocking digitate cells. 



Length = 1 mm.; breadth = *65 mm. 



The surface of the specimen is not well preserved. In shape 

 and size it corresponds closely with the Reuverian species, though 

 this appears rather broader from being crushed fiat, whereas the 

 Castle-Eden specimen is inflated. The interlocking digitate cells 

 are identical with those seen in the Reuverian species, and I feel 

 little doubt that the species are the same. 



A second specimen also occurs at Castle Eden. It agi'ees with 

 the last in size and shape ; but the surface is better preserved, and 

 the outer coats obscure the characteristic interlocking cells. The 

 outer coat of this species is formed of fiat hexagonal cells arranged 

 in longitudinal rows showing pitting underneath. 



From the fact that the only two specimens found at Castle Eden 

 are identical in shape and size, even though the surfaces of the two- 

 do not appear to correspond, I am inclined to think that they 

 belong to the same species. The combined size and form of this 

 seed are peculiar : I have not been able to match the combination 

 among living species ; consequently, the evidence that they offer 

 points to both specimens belonging to the same species and 

 belonging also to the lieuverian species. The discrepancy seen in 

 the characters of the coats of the three is of less importance, for 

 the outer coats of Hypericum are thin and, as one or another is 

 removed, in part or wholly, so do the external characters of the 

 seed change. 



VIOLACE^l. 



Viola, palustris Linnaeus. (PI. IX, fig. 16.) 



Seed obovate, circular in section, closely pitted. 



Length = 1 "8 mm. ; breadth = T75 mm. 



A complete seed and several fragments agree in size and shape 

 with the seeds of V. palustris, and must be referred to the species. 



V. palustris is an inhabitant of the northern temperate regions. 



Viola silvestrts Peiehenbach. (PI. IX, fig. 17.) 



Length=2 mm. ; breadth uncertain (broken). 



The remains of three germinated large seeds agree in length and 

 curvature with this species. The surface shows shallow pits with 

 thick walls, wherefore the pits appear farther apart than in any 

 other species known to me. The characters are all in complete 

 agreement with V. silvestris, and the seeds, though broken, must 

 be referred to it. The species is found throughout Europe and 

 temperate Asia. 



