116 American Midland Naturalist Monograph No. 4 



MOUNTAIN: Poudre Canyon. MESA VERDE: road at head of Morfield Canyon. ISLE 

 ROYALE, abundant: Mott Island; Siskiwit Bay; Washington Island. 



5. NooTKA Rose (Rosa nutk^na Presl.). — Stout erect shrub 3 to 5 

 feet high; stems usually dark brown, armed with large straight prickles and 

 the young stems bristly; leaflets 5 to 9, broadly elliptic to narrowly egg- 

 shaped, 1/2 to 2 inches long, dark green and smooth above, finely hairy and 

 often glandular below; flowers large, 2 to 3 inches across, usually solitary, 

 rose-pink, the flower-stalks smooth or slightly glandular-bristly; fruits globose, 

 smooth, without a neck, large and showy when mature, I/2 to % inch in 

 diameter. This is one of the most showy of the rose species both in flower 

 and fruit. (Syn. R. Spaldmgi Crepin.) 



OccuTTence. — OLYMPIC, abundant, 1,500 to 4,000 feet: Duckabush River; Hoh 

 River; Beaver Creek; Hurricane Ridge; EKvha River; Low Divide; North Fork 

 Quinauit River. MOUNT RAINIER, common, 2,500 to 4,500 feet: Mount Wow; near 

 Ricksecker Point ; Goat Mountain ; Tipsoo Lake. 



6. Mangos Rose {Rosa manca Greene) . — Shrub up to 6 or 8 feet 

 high, the stems armed with curved prickles; leaflets 5 to 7, oval to egg- 

 shaped, % to 1% inches long, smooth on both sides or finely hairy below; 

 flowers solitary or several, 1 to II/2 inches across; fruits globose. (Syns. R. 

 oreophila Greene, R. melina Greene.) 



Occurrence. — MESA verde. bryce canyon : west of canyon road, 8,000 feet. ZION : 

 near northern boundary of park, 5,900 feet. GRAND CANYON, on the North Rim. 



7. California Rose (Rosa calif omica C. &: S.). — Stout shrub up to 9 

 feet high; prickles stout, curved, about ^ inch long, flattened at the broad 

 base, often paired below the leaves, the stems sometimes with bristles also; 

 leaflets 5 to 7, broad-elliptic to narrowly reverse-egg-shaped, about % to ly^ 

 inches long, usually simple-toothed, hairy on both sides, not glandular; 

 flowers few to many in leafy-bracted clusters or sometimes solitary, pink, 

 about fi/^ inches across, the sepals hairy outside; flower-stalks smooth or 

 slightly hairy; fruits globose, with a distinct neck, about ^2 inch across. The 

 bushes often form thickets along streams or on moist flats where they fur- 

 nish good browse for animals. 



Occurrence. — YOSEMITE, in meadows up to 6,500 feet: Hetch Hcichy. SEQUOIA: 

 head of Bennett Creek, 5,900 feet; Dorst Creek. 



8. Peafruit Rose (Rosa pisocarpa Gray). — Slender shrub 2 to 6 feet 

 high, often forming dense thickets; prickles weak, slender, sometimes nearly 

 y^ inch long, or the branches sometimes nearly or entirely unarmed; leaflets 

 5 to 7, elliptic-oblong to narrowly reverse-egg-shaped, 1/3 to 1% inches long, 

 coarsely toothed, smooth or finely hairy below; flowers pink, about 1 to 1% 

 inches across, borne in several-flowered clusters or sometimes solitary; fruits 

 globose, about 1/3 inch across, sometimes with a short neck. (Syns. R. 

 Pringlei Rydb., R. rainierensis Jones, R. ultramontana Hel.). 



Occurrence. — OLYMPIC, at lower elevations. MOUNT rainier: Nisqually Valley; 



