Snme Observations on fchfl Genus Rubus. IbJ 



upon by the prevailing outward circumstances, under whose influence the new 

 inner temlencies should by degrees be formed. As soon as the new tendencies 

 liave attained sufficient strength to suppress the old, the new form springs up. 



As h.is been said, R. relatus is r according to my view, an intermediate 

 form, but wliieb differs from so many other less important intermediary forms 

 by being very fertile and thereby having the appearance of stability, while the 

 nianv intermediary corylifolians, especially, seem to be merely ephemeral. 



I liave, with many doubts, referred the norwegian form of R. villicaulis, 

 Koehl., to the same group as these two species. It approaches in several 

 respects the preceding group, in particular one of its species, viz, R. in- 

 sularis, which Focke also has referred to II. villicaulis. I have already 

 pointeil out the great resemblance with R. Lindeyanus which is generally referred 

 to Cordifolii. The norwegian form i s separated from the Discolores, by itsbut 

 slightly hairy flowering shoots and turiones, also by the leaves being palegreen on 

 the under side, even when the plant is exposed to the sun. That the inflores- 

 eence of this form can have one or another stalked glandule, is what it shares 

 with Weihe's original R. cordifolius. Besides Cor this species, as well as for 

 tlie Cordifolii, and Süberecti, sessile glandules are very common, on the 

 turiones, as well as in the inflorescence, more particulally on the latter, and 

 it is not at all uncommon, that one or another of the glandules have a short 

 stalk. I still, bowever, by no means assert, that it therefore stånds in any 

 immediate genetic connection with R. fruticosus, or with the forms of 

 Cordifolii, growing on the east coast of Sweden, but rather think, that it 

 is a somewhat modified form of R. Lindeyanus, which wandered to Norway 

 from England or the northwest of Germany. 



Gr. id. Süberecti. 



2-2. R. sulcatus Vést. in Tratt. Rosac. monogr. III. 42 (see. Focke); 

 Linde!). Heil). Rul>. Sei ml. n. 7 & 21) (f. paniculata); R. affinis (Whe) Anh. 

 1. c. pag. 2'.). Nusira forma praeter alias notas insignis est ramis floriferis 

 glabrescentibus, foliia foliolisque omnibus turionum supra glabris, subtus sparse 

 pubescentilius, longo petiolatis, foliolo ovato vel oblongo-ovato, cuspidato, ad 

 liasin leviter cordato, foliis in ramis floriferis superioribus A: brevioribus 3-natis, 

 foliolo terminali oblongo-obovato, cuspidato vel oblongo-cuneato, breviter acu- 

 minato vel suhohtuso, in ramis inferioribus * & longioribus plerisque 5-natis, 

 folioli terminali ovato, cuspidato, ad liasin subcordato; foliolis omnibus imprimis 



Lund-. Univ. Årsskrift. Tora XXII. 'I 



