192 SOUTH ESSEX BRAMBLES. 



and very sparingly, R. dumnoniensis, Bab. forma. This latter 

 plant differs somewhat from the usual British form of this species. 

 It is a beautiful plant with a roundish, deeply cordate terminal 

 leaflet and bright pink flowers (in the type the flowers are milk- 

 white). Mr Rogers remarks that it is almost identical with a 

 form found growing by him in the Channel Islands at Sark and 

 Guernsey. Other brambles seen in this neighbourhood were : 

 R. rhamnifolius" Wh. and N., R. leucostachys, Schleich, and 

 R. leucostachys x rusticanus" in profusion, the hybrid 

 parentage of this being very well marked. Rubus fuscus 

 Wh. and N. var. nutans'''- Rogers, R. foliosus Wh. and N., and 

 R. rhamnifolius Wh. and N., grow on Coombe Green 

 Common. R. coesins, L., near Upminster Station ; R. caesius 

 X rusticanus" towards Tylers Common ; and along the same 

 road R. corylifolius, Sm. var. cyclophyllus (Lindeb.) The most 

 abundant brambles on Warley Common are R. selmeri,. 

 Lindeb., and a form (or forms) which seems to connect R. nitidus 

 Wh. and N., with R. afHnis Wh. and N., var. hriggsiauus Rogers, 

 and, perhaps, R. lentiginosus Lees. Further study is required 

 here, as this Warley Common form may cause the plant known 

 as R. affinis Wh. and N. var hriggsianus, Rogers, to be 

 associated with R. nitidus Wh. and N., rather than wdth 

 R. afflnis Wh. and N. ; a result that w^ould be in accordance 

 with the views of Dr. Focke. 



Danhury Common : R. idceus, L., R. nitidus," Wh. and N.,. 

 R. imbricatus Hort. var. Icndinensis ^^' Rogers. This is 

 identical with the plant growing on the commons on the south- 

 western and south-eastern outskirts of the Metropolis, and dis- 

 tinguished as a new variety in the Journal of Botany, March,. 

 1903. It is apparently very rare at Danbury. R. carpinifolius "' 

 Wh. and N. (this also seems a rarity here), R. rhamnifolius„ 

 Wh. and N., R. pulcherrimus, Neum., R. selmeri Lindeb. (by 

 the road from Bicknacre) ; R. rhombifolius,'^' Weihe. A 

 form or variety of this species growing abundantly here is ver}- 

 similar to a Surrey plant found by Major WoUey Dod, ^vhich 

 seems sufflcientl}' distinct from the type to be regarded as an 

 undescribed variety. Further study is desirable. R. rusticanus 

 Merc, R. sprengelii =■' Weihe, R. pyramidalis,''' Kalt. (a 

 small form identical with the Warley Common plant. A highly 

 glandular form "•' grows by the road from Bicknacre). R» 



