358 Rydberg: Notes on Rosaceae 



my monograph admitted five species and one variety, and my 

 treatment in the North American Flora admits seven species. 

 Fragaria canadensis and F. Terrae-novae are both reduced to forms 

 of F. virginiana. Concerning F. canadensis the following remarks 

 are found: "A form with the pubescence generally more sparing, 

 the hairs on the scape being subappressed, is sometimes dis- 

 tinguished. (F. canadensis Michx., in part.)" The first one who 

 in later years took up the name F. canadensis Michx. was Dr. 

 N. L. Britton. He was followed by myself. I do not know of any- 

 body else who in print has "distinguished" F. canadensis from F. 

 virginiana, i. e., pointed out the differences between the two. 

 The plant characterized by us is not a plant with appressed or 

 subappressed pubescence on the scape but one with spreading 

 pubescence. The distinguishing characters given by us are the 

 oblong-conic fruit and the narrower leaflets with shorter petiolules. 

 It is a rare plant and could be a hybrid between F. virginiana and 

 F. americana, but the well-developed fruit, which is even longer and 

 narrower than in F. americana, speaks against it. Besides, Pro- 

 fessor Fernald has collected in the lower part of Quebec an entirely 

 different plant, which looks much more like a hybrid between 

 those two species. This plant is intermediate between the two 

 but more like F. americana and is apparently sterile, a fact that 

 speaks for a hybrid origin. In the Gray's New Manual the fol- 

 lowing remark is also found: "Another scarcely separable form 

 has the hairs on both scapes and petioles sparse and subappressed. 

 (F. terrae-novae Rydb.)" These characters are true but they are 

 not the only ones. F. Terrae-novae has the large flowers of the 

 western F. platypetala, the petals being almost twice the length 

 of the sepals, while in F. virginiana they are usually about half 

 longer than the sepals. F. Terrae-novae is about as distinct from 

 F. virginiana as is Fernald's own F. multicipita. The difference 

 between F. Terrae-novae and F. multicipita is that in the former . 

 the leaflets are short-petioluled while in the latter they are 

 sessile. The petals of F. multicipita are unknown. F. Gray ana 

 and F. americana are regarded as varieties of F. virginiana and 

 F. vesca respectively. So they were regarded by Dr. S. Watson. 



The treatment in the New Manual of the Central Rocky 

 Mountains is rather less satisfactory. Fragaria bracteata Heller 



