622 



MIIS. E. M. RElD AtfD MISS M. E. 3. CHANDLER [vol. lxxix, 



Crataegus reidii sp. nov. (cf. C. pyracantha Medic). 



Carpels 5 in the berry, lunate, broadest at or near the mid die. 

 Ventral margin straight, occasionally facetted below ; dorsal surface 



convex and markedly contracted 



Fig. 2. — Crataegus reidii sp.nov. 

 West Wittering. (Length 

 = 3 mm.; breadth=l'75 

 mm.) 



over the nude area ; junction of 

 the two areas four-fifths of the 

 distance from the apex on the 

 ventral margin and one-third of 

 the distance from the apex on 

 the dorsal face ; style large, 

 patent, somewhat sunk below the 

 sub-gibbous top of the carpel ; 

 surface finely granulate. 



Length = from 4 - 25 to 2 mm.; 

 breadth = from 2 25 to l'O mm. 

 Many carpels have been found 

 which vary greatly in size, but 

 otherwise agree in their charac- 

 ters. The average length is 3 

 mm. and the breadth 1*75 mm. 



The species is almost certainly 

 extinct. It is named after Mr. 

 Clement Keid, who first found 

 and determined it as a Crataegus. 



Locality. — West Wittering. 



For comparison with the above, we give the description of the 

 living C. pyracantha Medic. 



Fig. 3. — Crataegus pyracantha, 

 recent. (Length = 3 mm.; 

 breadth =2 mm.) 



CRATiEGUS PYRACANTHA Medic. 



Carpels o in the berry ; average diameter of united carpels = 



4 mm. Carpels gibbous, broad- 

 est below the middle ; ventral 

 margin straight and facetted at 

 the base ; dorsal surface very con- 

 vex, contracted over the nude 

 area; junction of the two areas 

 four- fifths of the distance from 

 the apex on the ventral margin 

 and half the distance- from the 

 apex on the dorsal face, the nude 

 area being markedly depressed ; 

 style large, patent, completely 

 sunk below the gibbous apex. 



Average length = 2 - 75 mm. ; 

 average breadth = 2 mm. 



The occurrence of these two 

 species of Crataegus at Clacton 

 and West Wittering respectively is of very great interest. 



