(425) 201 



Waldpflanze. Im Hugcllaiide, im Schwarzwald auch in der nlcderen Bcrgregion. In Wcstdculsch- 

 land vom siidhchen Schwarzwald bis an den Niederrhein verbreitet; haufig in den belgischen Ardennen; 

 in England ansclieinend schr zcrstreut (von mir untcr Fiihrung von A. Ley unweit Hercford gesehen). 



F r m a e R. o b s c u r o a f f i n e s v e 1 , s i m a v i s , R u b i o b s c u r i 



(s p e c. c 1 1 e c t.) s u b s p e c i e s. 



Subspeciebus, quae admodum constantes videntur, intercurrunt formae ambiguae omnes limites 

 perturbantes. 



R. rubicundus P. J. Muell. et Wirtg. Hb. Rub. Rhcn. ed. 2 no. 39 (1858), Focke Syn. Rub. Germ. 

 p. 310. (1877). 



Aculei aciculati, vulgo inferne parum dilatali; iuflorescentia brevis saepe patula; setae glanduli- 

 ferae tomentum superantes saepe crebrae; sepala in fructu immaturo patentia, demum erecta. — 

 Rlieingebiet. 



R. crythroskmon Favrat Bullct soc. Vaud. XVII 530 (1881). Forma latifolia verosimile exclu- 

 denda. 



Aculei pauci, robustiores quam in R. rubicundo; foliola subtus tomentoso-canescentia; sepala 

 post anthesin laxe reflexa. 



Siidl. Schweiz (Waadt), Norditalien (Como). 



R. insericatus P. J. Muell. in Fl. (B. Z.) XLI 184. (1858.) XLI 1233. Focke Syn. Rub. Germ. 309. 



Aculei tenues aciculati; foliola saepe ovata vel ovato-oblonga, supra et subtus laete viridia et 

 pihs subsericeis micantia; inflorescentiae angustae ramuli breves saepe uniflori; sepala in fructu 

 reflexa. — Glandulae stipitalac crebrae, plerumque sub indumento villoso occultae. 



Rheingebiet, westlichc Scliweiz. 



F o r m a e h y b r i d a e R. i n s e r i c a t i. 



Describuntur a Schmidely Bull. soc. bot. Geneve formae R. insericati hybridae, scil. : 



R. inscricatus x niacroslemon 1. c. pag. 83. 



R. insericalus x pilocarpus 1. c. pag. 153. 



E speciminibus compluribus, quac vidi, unum ad R. dccorum pertinere suspicor. 



R. insericaius x Villarsianus 1. c. pag. 143. 



Formae multae intcr R. vestilum et R. rosaceum vel R. Lejcunei ambigentes, verosimile liybridae 

 vel liybridogenae, a P. J. Mucller olim sccundum ramos exsiccatos a Lcfevre missos in Pollich. XVI 

 descriptae sunt, intcr quas nominandae: R. excavatus (p. 135 n. 71), cjrijpoaccmtluis (p. 133 n. 69), opulentus 

 (p. 136 n. 72), iremulus (p. 138 no. 73), omnes formae rarae vcl rarissimae; praetera teste Boulay: R. ab- 

 scondilus (p. 167 n. 106), formidahilis (p. 128 n. 65), fulcralus (p. 178 n. 116), Mullcrii (p. 180 n. 118, 

 hic, quamvis in unico loco solum rcpertus, a Boulay seorsim describilur), rctrodcntcdus (p. 168 no. 107), 

 rufescens (p. 152 no. 96, a Boulay descriptus), analogus (p. 232 no. 173), flavescens (p. 195 no. 131), 

 obcuneatus (p. 196 no. 132). His formis addatur R. sericatus P. J.Muell. in Flora (B.Z.)41 p. 184 (1858), 

 an quoque Pollich XVI p. 125? 



Formae R. obscuro affines unico charactere, e. g. inflorescentia angusta vel divaricata, sive 

 foliolis ellipticis vel ovatis, sive sepalis in fructu reflexis vel erectis diversae, in subspecies naturales 

 disponerc non licet, quia omnes gradus intermedii occurrunt. 



R. decorus P. J. Muell. in FI. (B. Z.) XLI 151. (1858). 



R. obscurus D. dccorus, Focke in Aschers, et Graebn. vSyn. mitt. Fl. VI 554. 



R. cruentatus P. J. Muell. Pollich. 16. 294 (1859). Wirtg. Hb. Rub. Rhen. I 136, II 36. Focke 

 Syn. Rub. Germ. 312. 



R. Fuckelii Wirtg. Fl. (B. Z.) XLII 235 (1859); Foclvc Syn. Rub. Germ. 306 haud certe distin- 

 guendus videtur. 



Bibliotheca botanica. Heft 83. 



