112 SYLVATICI. 



h. Sylvatici. Aculei caulis mediocres, ssepissime 

 sequales; pubescentia (densa) piloso-villosa, patens. 

 Folia subtus viridia vel raro albo-tomentosa. 



Usually the plants included in this group have neither 

 aciculi nor setse upon their barren stems, but occasionally a 

 few of each may be found. R. leucostachys (3 vestitus,^ R. 

 Salteri (3 calvatus and the form of B. villicaulis, which was 

 considered as R. vulgaris by Lindley, are sometimes fur- 

 nished with them in tolerable abundance. The Sylvatici 

 and Spectahiles do not admit of any satisfactory separation. 



