OP ARTS AND SCIENCES. 351 



Boundary TJeport to have been collected at San Diego by Parry, and the speci- 

 mens are so labelled in Herb. Turrey, but this is probably a mistake. Parry's 

 specimen in Herb. Gray is labelled from "Monterey," and is a nearly exact 

 counterpart, and perhaps the original, of the figure given by Dr. Torrey. 



The flowers are pale rose-color, sometimes white, usually about an inch 

 broad. The sepals are always entire and rarely with more than a slender 

 acumination, the flower-bud being globose to broadly ovate. An unusual form 

 was collected by me in Northwestern Montana, on the descent from the Pocky 

 Mountains into Ross's Hole at the head of the Bitter-Root River, with larger 

 flowers (2 inches broad), and the sepals as long as the petals. The leaflets vary 

 much in form and size (the terminal o to 18 lines long), and frequently have 

 man}' of the teeth entire. The var. pubescens, Watson, is the rare tomentose 

 high-mountain form. Resinous pubescence on tiie under side of the leaves is 

 more frequent, but still rare. 



Naturalized Species. 

 * Deciduous Roses, introduced from Europe ; flowers pink. 

 R. CANiNA, Linn. Doff Hose. Stems armed with stout recurved 

 spines, without prickles, the branches sometimes unarmed : stipules 

 often dilated ; leaflets 5 or 7, elliptical or oblong-ovate, often rounded 

 at base, usually an inch long or less, glabrous or somewhat pubescent, 

 simply toothed : flowers solitary (or 2 to 4) on usually naked pedicels ; 

 sepals pinnatifid, deciduous : fruit naked, oblong-ovate, rarely nearly 

 globular. — it. Jlexuosa, Raf. H. Montezumce, HBK., Nov. Gen. & 

 Spec. 6. 222; Thory in Redout. Ros. 1. 55, t. 16. 



Hab. Roadsides ; Eastern Pennsylvania, Tennessee, and probably elsewhere ; 

 Mexico. 



Readily distinguished from native species by the naked receptacles and pedi- 

 cels, the small leaves usually obtuse at base, the ovoid fruit, etc. The very 

 slender styles, also, are little exserted beyond the \evy contracted elevated 

 opening of the receptacle. There can be little doubt that R. Montezumce is only 

 a naturalized form of this species. The specimens from Mexico in our herba- 

 riums that have been so named (from highlands west of the city of Mexico, 

 Gre(]g, Monterey, Coulter, and Toliica, Andrieux) are not distinguishable from 

 R. ranina. It was referred to R. caninii as var. Moutezuma; hy Seringe, and the 

 same reference is made by Crepin after examining specimens from several other 

 collectors and localities. 



R, RL'BIGINOSA, Linn. Sioeethriei\ Eglantine. Resembling the 

 last, but of more compact habit, the leaflets densely resinous beneath 

 and aromatic, and doubly serrate; the short pedicels and pinnatifid 

 sepals hispid ; fruit subglobose to oblong-ovate. — R. suaveolens, 

 Pursh, Fl. 346. H. micrantha, Smith. 



Hab. From Nova Scotia to Ontario and southward to S. Carolina and Ten- 

 nessee ; Oregon. 



R. micrantlia, "midway between ruhifjinosa and canina" (Hooker), is less 

 strongly scented, the branches longer, fruit narrower, and the styles glabrous. 



