BOTANY 



R. Babingtonii occurs in the Thames district near Seer Green, and the 

 var. phyllothyrsus has been found by Mr. Britton near Beamond End. 

 R. Lejeunei var. ericetorum occurs at Naphill and a closely allied form at 

 Heath in the Ouzel district. The Sub-Eellardiani are represented by R. 

 fuscus var. nutans, which Mr. Benbow records from near Farnh-am 

 Common. R. scaber is found at Alderbourne, etc. R.foliosus occurs at 

 Dropmore and Brickhill. The Kcehleriani include R. rosaceus, which 

 as an aggregate species is widely distributed ; var. Hystrix occurs at 

 Brickhill, the sub-species infecundus at Shalbourn in the Ouse district, and 

 is not uncommon in the heathy parts of the Thames and Colne districts. 



Sub-sp. Purcbasianus is the name suggested for a bramble I gathered 

 at the Chequers in the Thame district, but in England it is a very local 

 form. Sub-sp. R. adornatus was found by the Rev. E. F. Linton at 

 Great Horwood in the Ouse district. R. fuscoater is very local at Elles- 

 borough in the Thame and at Naphill in the Thames districts. R. 

 Kcehleri as the var. cognatus occurs at Dropmore. R. dasyphyllus is the 

 commonest woodland bramble on dry soils, occurring in all the districts ; 

 it is the R.palKdtU of Babington and many English writers, but not of 

 Weihe and Nees. R. Marshalli grows about Black Park in both the 

 Thames and Colne districts. Of the Bellardiani Mr. Benbow records 

 R. viridis from Black Park. R. Bellardi occurs at Burnham. R. serpens 

 has been found by Mr. Britton at Penn Street, and at Black Park by 

 Mr. Benbow. R. birtus as the var. flaccidfolius has been already men- 

 tioned. Of the Ceesii we have R. diver sifolius rather frequently, 

 especially in clayey soils, with a thin stratum of gravel, and it is found in 

 all the districts. The Rev. W. Moyle Rogers finds the var. ferox near 

 Brickhill. R. corylifolius is the commonest bramble on clay soils, and 

 both the var. sublustris and cyclophyllus are found. R. Balfourianus is 

 recorded for Brickhill and Alderbourne. R. ccesius, the dewberry, is very 

 common in clay soils and in ditches and wet woods, and occurs in all the 

 districts. Rubus carpinifolius and R. Salteri have also been found near 

 Brickhill, and R. infestus near Chesham. Many hybrids of the various 

 species occur. Large as is the number of species in the foregoing list it 

 is by no means exhaustive ; a considerable amount of work still remains 

 to be done, and several additional species will certainly be discovered. 



THE ROSES (Rosa) 



This group is not nearly so well represented as the brambles. The 

 burnet rose (Rosa spinosissima) is not recorded, and therefore the invo/uta 

 group, which consists chiefly of hybrids of spinosissima with R. villosa and 

 R. mollissima, Willd. (R. tomentosa, Sm.), are also unrepresented, and R. 

 bibernica, a hybrid of the burnet with the dog rose, for the same reason is 

 absent. The sweetbriar R. rubiginosa is sparingly distributed over the 

 county, but is more frequent on the chalk where, too, R. micrantha is 

 also more common. R. sepium will almost certainly be found on the 

 chalk escarpment, and I have apparently a form of it from near Marsh 



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