(1896)  Page(s) 12.  
 
Rosa blanda Ait.
R. blanda, which often has pubescent leaves, sometimes displays leaves perfectly glabrous; the teeth are almost always simple, and very rarely do they become glandular-compound. Rarely, also, are the leaves a little glandular beneath, and the receptacles hispid-glandular. Different ages may give rise to various series of variations.

(1896)  Page(s) 30.  
 
Rosa Gymnocarpa Nutt. presents an appearance and distinctive characters which never permit it to be confused with any other American species....Its stem, branches, and floriferous branchlets are habitually clothed with scattered prickles that are very slender..and very numerous; only in rare cases....entirely unarmed....Its leaflets are remarkably thin, with teeth richly glandular-compound, the lower surface glabrous and the midrib with quite large lands...Watson has described, under the name of vareity pubescens, some specimens....It is really that form with finely pubescent leaves...In R. gymnocarpa the inflorescences are habitually one-flowered, rarely many-flowered....As yet I have always seen the receptacles smooth, but they may be expected to be sometimes glandular-hispid. The fructiferous ones....produce a very small number of akenes.

This species presents a character peculiar to it, at least in America. The receptacles, before complete maturity, are cut off by an articulation toward the summit, permitting the calyx to detach itself in one piece, leaving the receptacular cavity open. This singular articulation, which is constant, also occurs in two Asiatic species of the section of CINNAMOMEAE, R. Beggeriana Schrenck and R.Alberti Regel.

(1896)  Page(s) 14-15.  
 
Rosa pisocarpa A. Gray In its habitual form, such as Asa Gray described and figured in the Botanical Magazine (pl. 6857), R. pisocarpa cannot be confounded with any other species. Its prickles regularly paired, and its leaflets more or less conspicuously rounded at base, distinguish it from R. blanda. Its slender and straight prickles, and its inflorescence with small and usually numerous flowers, separate it from R. Nutkana. Lastly, the form of its prickles, which are straight and not curved or hooked at the tip, permits no confusion with R. Californica.
Despite these differences, there is more or less confusion....