Some Observations on the Genus Rubus. !•>< 



I have every reason to assume, that R. pyramidalis is descended from 

 some form of R. corylifolius, * Balfourianus. In our eountry, certainly, 

 no forms of R. corylifolius are to be found. which can be considered as 

 intermediate forms between this species and R. pyramidalis, which, on the 

 contrary, is the case in the southern part of the Jutlandic peninsula, and pro- 

 bably also, in the north of Germany. 



Gr. 7. Discolores. 



15. R. polyanthemos Lindeb. Herb. Rub. Scand. n. 16; R. Neumanni 



Focke, in Potonié, Fl. v. Kord- und Mitt.-Deutschl. pag. 257; turionibus alte 

 arcuatis, angulatis, lateribus nonnumquam excavatis, raro sulcatis, sparse pilosis, 

 aculeis sparsis, angulis insidentibus, subsequalibus, mediocribus, rectis vel decli- 

 natis, ad basin parum dilatatis, glandulisque sessilibus munitis, dense foliosis; 

 folii> breviter petiolatis, quinato — septenato-digitatis, crassis, subcarnosis, supra 

 obscure viridibus, subtus pallidioribus vel canescentibus, tomento tenui & pilis 

 longioribus obsitis, foliolis omnibus petiolatis, simpliciter serratis, terminali 

 orbiculari vel rotundato-obovato, abrupte acuminato, ad basin rotundato vel 

 leviter cordato; foliis ramorum floriferorum 3-5-7-natis, subtiliter & simpliciter 

 serratis, foliolo terminali orbiculari vel late elliptico, breviter acuto; inflorescentia 

 pra?cipue in ramis longioribus maxime composita, amplissima, inferne foliosa, 

 versus apicem subinenni & glandulis breviter stipitatis obsita; ramis inferioribus 

 inflorescentia' maxime evolutae racemos, ad basin e cymis compositos, gerentibus, 

 ramis superioribus productis, cymis ramosis terminatis; sepalis ovato-laneeolatis, 

 acuminatis, extus canescentibus, aciculis & glandulis subsessilibus munitis, in 

 fructu reflexis; petalis dilute roseis, orbicularibus vel late ellipticis, sepalis vix 

 longioribus, late & breviter unguiculatis; filamentis stylos virescentes longe 

 superantibus; germinibus plerumque sparse pilosis; receptaculo piloso. 



This species, which is the most vigorous of all the scandinavian brambles, 

 grows in the northvvest of Skåne, near Kullen, in rieh, damp soil, between 

 ätones, and in roefey clefts in open spöts, exposed to the sea-breezes. The 

 Rev. J. II. I). Wajllengren has found the same species further inland at 

 Tyringe, also in the northwest of Skåne. 



Turiones crassi, validi & valde ramosi, ad basin rotundato-angulati & acu- 

 leis numerosioi'ibus & iniequalibus, rectis & paulo debilioribns munitis. pilis 

 simplicijbus & ramosis, glandulis nonnumquam stipitatis & aciculis perpaucis 

 muniti, foliis fere tecti. Folia & foliola breviter petiolata, ha?c plerumque con- 



