HOW TO GATHER SPECIMENS OF ROSES. 



25 



Series 2. Subcristatae. 

 Var. Reiiteri, Godet. 



— subcristata, Baker. 



— Hailstoni, Baker. 



— implexa, Gren. 



— coriifolia, Fries ( = R. brae- 

 tescens, Woods). 



— Watsoni, Baker. 



— celerata, Baker. 

 Series 3. Subrubiginosae. 



Var. Borreri, Woods ( = R. dume- 

 torum, E. B., R. inodora, var. 

 o, Borrer), 



Var. Bakeri, Deseglise. 



— margin ata, Wallr. 



Group 5. Systyl^. 



12. R. stylosa, Desv. 



Var. Systyla, Bast. ( = R. collina, 

 E. B.). 



— Desvauxii, Baker. 



— opaca, Baker. 



— gallicoides, Baker. 



— Monsonife, Lindl. 



13. R. arvensis, Huds. 



Var. bibracteata, Bastard. 



In the last edition of Babington's Manual, 17 species are described. 

 Of these, R. Wilsoni, Borr., and R. Sabini, Woods, are reduced by Mr. 

 Baker to varieties of R. involuta. Smith ; R. inodora, Fries, to a variety 

 of R. sepium, Thuill. ; and R. bractescens. Woods, and R. ccesia, Sm., 

 to vars. of R. canina, L. Mr. Baker adds R. pomifera, Herm., but it 

 is not a native species. 



HOW TO GATHER SPECIMENS OE BOSES. 



The care which has been taken in the preparation of specimens has 

 grown Avith the progress of botany. At first the gatherings were gene- 

 rally made in a very parsimonious fashion, and collections contained 

 only small fragments of the plants. In proportion as the species and 

 their forms were better studied, the need h;is been more and more felt 

 for beautiful and numerous specimens. For the genus Rosa, of which 

 the species or forms are numerous and distinguished by subtle cha- 

 racters, it is needful more than in almost any other set of plants, to 

 devote great attention to the gathering and preparation of specimens, 

 and to gather the latter at different stages of the growth of the plant 

 so as to be able to follow the evolution of all the organs. If one makes 

 exchanges, one must not confine one's gatherings to a few branches. 

 The botanist should use scissors rather than a knife ; the first instru- 

 ment is more convenient to use, and saves a good many pricks of his 

 fingers ; with scissors it is easy to take portions of the stem furnislied 

 with two or more flowering or fruit-l)enriiig branches, wliicli is more 

 useful than to take mere brandies without portions of the main stem. 



