PIRUS cf. MALUS Linn. 

 PL IX, fig. 7. 



A single specimen resembles P. malus in shape and size, but is much more 

 rugose dorsally. Unfortunately the seed is so curved towards the axis as to make it 

 impossible properly to show the characters in a photograph, and fig. 7 shows the dorsal 

 surface only. The seed cannot be referred to P. Malus, and we can find no other species 

 which closely resembles it. 



Length 8 mm., breadth 3.4 mm. Reuver. 



The dorsal flattening, curvature, and rugosity of this seed suggest a species in 

 which the seeds are normally compressed dorsally, not from side to side. 



MESPILUS MONOGYNA Jacq, 

 PI. IX, figs. 8-10. 



Endocarps belonging to M. (— Crataegus) monogyna occur at Reuver, and a 

 doubtful specimen has been found at Swalmen. They do not appear to be distinguish* 

 able from the living form. 



Length 5.7 mm., breadth 4.3 mm. Reuver, Swalmen? 



MESPILUS Sp. 2. 

 PI. IX, fig. 11. 



A much compressed endocarp suggests a Crataegus with 5 carpels. Its surface is 

 rugose, and it therefore cannot belong to Crataegus cuneata, which we found at Tegelen. 



Length 5.0 mm., breadth 3.2 mm. Brunssum. 



The specimen is badly preserved, the transverse wrinkle, which makes it look 

 like Cotoneaster, being merely an accidental fold. 



RUBUS. 

 Endocarps and prickles belonging to Rubi are fairly common at Reuver, and a 

 few have been found at Brunssum and Swalmen. Nearly all of the specimens belong 

 to a single species, but three others are represented. The most abundant species appears 

 to belong to the Fruticosi, though in some respects its endocarp more resembles the 

 Idaei. The other three species probably represent three other sections of the genus. We 

 have been unable to match any of the four; but in so difficult a genus we do not care 

 to describe new species without more material. 



RUBUS Sp. 1. 

 PI. IX, fig. 13. 

 A single endocarp differs greatly from any of the others, and we are uncertain 

 to what section of the genus it should be referred. It has a curious superficial resemblance 

 to Potentilla. 



99 



