L 36 F. W. C. Avesclioug. 



réctis, versus basin turionura minoribus & insequalibus, rectis. Folia turionum 

 quinato-digitata — pedata, longe petiolata, supra plernmque leete viridia vel 

 flavescenti-virescentia, subtus sericeo-canescentia, stipulis linearibus, petiolis acu- 

 leis falcatis armatis; foliola petiolata, breviter acuta, subduplicato-serrata, serra- 

 tura una alrerave retroflexa; terminale late ellipticum — oblongo-ovatum, ad basin 

 rotundatum vel leviter cordatum, intermedia & infima ovata vel oblongo-ovata. 

 Folia ramorum floriferorum 3- vel infima 5-nata, subduplicato-serrata, foliolo 

 terminali breviter acuto, rhomboideo vel obovato-cuneato. Inüorescentia elongata, 

 pyramidalis, versus apicem angustata & subacuta, inferne foliosa, composita, 

 ramis subdivaricatis, inferioribus elongatis, racemos paucifloros gerentibus, 

 Buperioribus brevibus, 2-1-floris, ramis & pedicellis villosis, glandulosis, aculeis 

 longis, subulatis, rectis vel declinatis munitis. Sepala ovato-lanceolata, appendi- 

 culata, extus cinereo-tomentosa, glandulosa & aculeolata, a fructu reflexa. Petala 

 dilute rosea, mox albicantia, extus pubescentia, obovato-oblonga, anguste ungui- 

 culata. Filamenta alba, stylos virescentes superantia; antherse glabrse. Recep- 

 taculum pilosum; germina glabia. 



Of all the scandinavian brambles, R. pyramidalis i's the most scarce. 

 Only a few bushes bave hitherto been met with, viz, in road side ditches near 

 Våsby, in the northwest of Skåne. 



3i i'ral years ago, when I received some dried specimens of this form, I 

 considered that it could be referred to R. villicaulis, Koehl., although it by 

 no means (Skånes Flora, ed. II, pag. ;>06) escaped my attention that it, in 

 several respects, deviated from the Norwegian form of that species. Later on, 

 Focke has assigned this form to R. pyramidalis. I had the opportunity of 

 eonvincing myself, that, at least, it was identical with the form which at pre- 

 sent is considered Kaltenbacii's species. 



The Swcdish and Danish forms correspond completely. This is also the 

 case with the North German form. Mr. Marsson has had the kindness to send 

 me Bpecimens of R. vulgaris, from Wolgast, in the north of Germany. These 

 specimens correspond in everv lvsji.ct with our R. pyramidalis, so that Maus- 

 son's R. vulgaris is s\ nonymons with this species. In our country, R. pyra- 

 midalis doe> not show any indination to vary, and none of the other species 

 have any tendency to be moditied in the direction of this species. One can, 

 therefore, on good grounds decide, that R. pyramidalis has not arisen here, 

 but has immigrated from Denmark, and that here it has not found such out- 

 ward conditions tlmt could cause it to vary. 



