Other  (14 Sep 2019)  
 
United States Department of Agriculture
Natural Resources Conservation Service.  Plant Materials Technical Note No. 97. February 2014. Plant Materials Technical Note 
Acid and Heavy Metal Tolerant Plants for Restoring Plant Communities in the Upper Clark Fork River Basin
by Joe LeFebvre, Project Leader.  Integration of Selected Native Plant Materials for Enhanced Restoration Activities in the UCFRB

General Description
Woods' rose, Rosa woodsii (accession number 9081638), is a spreading to erect, long-lived shrub native to the central and western U.S. and Canada. Woods' rose is a widely adapted species and grows in many habitat types. It is an understory plant in dry and moist forest communities, and also grows in sagebrush, juniper, mountain, plains and desert grasslands, prairie and alpine habitats. It primarily grows on upland sites, but can be found in wetlands, riparian areas, marshes, and along lake shores. Woods’ rose is an excellent plant for re-vegetating disturbed sites because it produces rhizomes, regenerates quickly, and has excellent survivability. It can be used to rehabilitate mine spoils and road cuts, control soil erosion on hillsides, and stabilize eroded stream banks.
NRCS−Montana−Technical Note−Plant Materials−MT-97 16
Origin
The original collection site, with a soil surface pH of 4.53, has an average annual precipitation of 10 to 14 inches, and an elevation of 5,168 feet. In the fall of 2000, Woods' rose was planted at the Mill Creek Woody CEP approximately four miles southwest of Anaconda, Montana. It was selected for its superior adaptation to moderately acidic and heavy metal-laden soils.
https://www.nrcs.usda.gov/Internet/FSE_PLANTMATERIALS/publications/mtpmctn12232.pdf

Website/Catalog  (2018)  
 
Rosa woodsii Lindley subsp. woodsii
Woods’s rose, rosier de Woods
Rosa adenosepala Wooton & Standley; R. demareei E. J. Palmer; R. fendleri Crépin; R. macounii Greene; R. woodsii var. fendleri (Crépin) Rydberg; R. woodsii var. terrens (Lunell) Breitung
Shrubs, forming thickets or ± open stands. Stems erect, slender to stout, 2–20(–50) dm, densely or openly branched; bark dark red, glabrous; infrastipular prickles usually paired, sometimes absent, erect or curved to hooked, declined, or introrse, usually subulate, sometimes terete or flattened, stout, (0.5–)2–7(–13) × 1–5 mm, ˂base glabrous˃, internodal prickles usually sparse to dense, often intermixed with aciculi. Leaves 2.5–8(–12) cm; stipules (6–)9–16(–25) × 2–5 mm, auricles usually flared, 2–6 mm, margins usually entire, sometimes undulate, sparsely serrate, eglandular or glandular, surfaces glabrous, eglandular, rarely glandular; petiole and rachis with pricklets sparse or absent, usually puberulent-velutinous ˂hairs 0.1(–0.5) mm˃, rarely glabrate, eglandular, rarely stipitate-glandular; leaflets 5–7(–9), terminal: petiolule 3–12 mm, blade obovate, elliptic, or ovate, rarely cordate, (6–)12–35(–40) × 6–20(–26) mm, ˂usually widest at or above middle˃, membranous, base cuneate, rarely obtuse, margins 1(–2+)-serrate, teeth (5–)7–14 per side, ˂on distal 1/2–4/5 of margin˃, acute, usually eglandular, apex acute or obtuse, abaxial surfaces pale green, glabrous, sometimes pubescent or puberulent, eglandular, sometimes glandular, adaxial green, rarely glaucous, dull, glabrous. Inflorescences usually panicles, sometimes corymbs or solitary flowers, 1–10(–25+)-flowered. Pedicels erect, slender, 10–20(–33) mm, glabrous, eglandular, rarely stipitate-glandular; bracts 2, ovate or lanceolate, (6–)9–20 × 4–9 mm, margins entire or ciliate, eglandular, sometimes sparsely glandular, surfaces pubescent, eglandular. Flowers (2–)3–3.5(–5) cm diam.; hypanthium ovoid, rarely oblong or globose, 3–6 × 3–5 mm, glabrous, eglandular, rarely stipitate-glandular, neck (0–)0.5–1 × 1.5–3.5 mm; sepals spreading, ovate-lanceolate, 8–15(–21) × 1.5–2.5 mm, tip 4–6 × 0.3–1(–2) mm, margins usually entire, abaxial surfaces glabrous, eglandular, sometimes sessile- or stipitate-glandular; petals single, pink to deep rose, 15–20(–25) × 15–20(–25) mm; ˂stamens 65˃; carpels (16–)20–40(–50), styles exsert 1–2 mm beyond stylar orifice (2–2.5 mm diam.) of hypanthial disc (3–5 mm diam.). Hips red, orange-red, or purplish red, globose, depressed-globose, ovoid, oblong, or urceolate, 6–13(–16) × 5–12(–15) mm, fleshy, usually glabrous, eglandular, neck (0–)1–2 × 3–4(–7) mm; sepals persistent, erect to spreading. Achenes basiparietal, 15–40, tan to dark tan, (3.5–)4–5(–6) × 2–4 mm. Subspecies 6 (6 in the flora): c, w North America, n Mexico.
Rosa woodsii is the most common and most variable rose species in central and western North America (W. H. Lewis and B. Ertter 2007, 2010). Among its diagnostic features are relatively slender prickles, usually 1-serrate, eglandular leaflets, and a finely velutinous indument of 0.2–0.5 mm hairs on petioles and rachises. Its range extends from the prairies of Canada and the United States to inland Alaska and to north-central New Mexico, California east of the Cascade Mountains and Sierra Nevada, and northern Mexico.
At least 25 species names have been proposed to accommodate variation encompassed here within Rosa woodsii; some of these names have been used extensively (for example, R. fendleri Crépin, R. macounii Greene). The six subspecies recognized here represent significant morphological tendencies occurring in well-defined ecogeographic settings (W. H. Lewis and B. Ertter 2007, 2010). Localized varieties are recognized within two of the subspecies. Plants with intermediate characteristics often occur in transitional zones, and occasional anomalous collections display features not otherwise characteristic of a given ecogeographic region.
Leaves of Rosa woodsii inhibit HIV-1 replication in acutely infected cells. Both oleanolic and pomolic acids were identified as anti-HIV agents (Y. Kashiwada et al. 1998). Root decoctions of R. woodsii were drunk by the Shoshoni as a blood tonic for general debility and to treat diarrhea, and also by the Paiute for treating diarrhea (W. H. Lewis and M. P. F. Elvin-Lewis 2003).

Article (magazine)  (10 Sep 2007)  Page(s) 346-347.  Includes photo(s).
 
Rosa woodsii Lindley, Ros. Monogr. 21. 1820....
Key to the subspecies of Rosa woodsii in Central and Western North America:
- Shrubs most frequently short, typically less than 1 m, infrequently to 2 m; fertile branches densely prickly of various sizes, rarely few or unarmed; terminal leaflets obovate, fewer ovate or elliptic; flowers 1 to 3, rarely more; prairies and plains of central North America extending into the Rocky Mtns. and nearby Southwest.
-- Prickles straight, rarely curved; sepals commonly eglandular on outer surfaces or margins; rare or absent in highest elevations of Rocky Mtns. and outlying peaks and ridges....subsp. woodsii.


Rosa woodsii Lindley subsp. woodsii..
Rosa demareei E. J. Palmer, J. Arnold Arbor. 10:26. 1929. Syn. nov...
Rosa deserta Lunell, Amer. Midl. Naturalist 2:156. 1912....
Rosa fendleri Crépin, Bull. Soc. Roy. Bot. Belgique 15:91. 1876. Rosa woodsii var. fendleri (Crépin) Rydberg in Bessey, Fl. Nebr., Rosales 21:22. 1895....
Rosa fimbriatula Greene, Leafl. Bot. Observ. Crit. 2:135. 1912...
Rosa foliolosa (var.) leiocarpa Torrey in Frémont, Rep. 89. 1843...
Rosa hypoleuca Wooton & Standley, Contr. U.S. Natl. Herb. 16:131. 1913...
Rosa macounii Greene, Pittonia 4:10. 1899....
Rosa maximilani Nees in Wied-Neuwied, Reise N. Amer. 2:434. 1841...
Rosa naiadum Lunell, Amer. Midl. Naturalist 3:139. 1913...
Rosa poetica Lunell, Amer. Midl. Naturalist 3:138. 1913....
Rosa sandbergii Greene, Leafl. Bot. Observ. Crit. 2:137. 1911...
Rosa standleyi Rydberg, N. Amer. Fl. 22:527. 1918...
Rosa subnuda Lunell, Amer. Midl. Naturalist 2:153. 1912....
Rosa terrens Lunell, Amer. Midl. Naturalist 2:151. 1912. Rosa woodsii var. terrens (Lunell) Breitung, Canad. Field-Naturalist 68:82. 1954. Syn. nov....

Book  (Sep 2007)  Page(s) 341-353.  Includes photo(s).
 
Rosa woodsii Lindley subspecies woodsii
syn. R. demareei E.J. Palmer, R. deserta Lunnell, R. fendleri Crépin, R. fimbriatula Greene, R. foliolosa var. leicarpa Torrey, R. hypoleuca Wooton & Standley, R. macounii Greene, R. sandbergii Greene, R. standleyi Rydberg, R. subnuda Lunell, R. terrens Lunell

Rosa woodsii Lindley subspecies woodsii
Shrubs most frequently short, typically less than 1 m, infreq. to 2 m. Fertile branches densely prickly of various sizes, rarely few or unarmed...flowers 1 to 3, rarely more.
occurs in the prairies and high plains, often in woodland or riparian habitats, of Central Canada and the United States from east-central Alaska, southern Yukon, and the Northwest Territory, south to northeastern British Columbia, and east to Manitoba. It is rare to western Ontario and Wisconsin, south the western Iowa, northwestern Oklahoma, western Texas and west to New Mexico and eastern Arizona. Also extends into the passes of the Rocky Mountains from Montana to Colorado.

Article (website)  (2007)  Includes photo(s).
 
Rosa woodsii prepared by Guy Nesom
Shrubs growing .2 -2 or 3 m high, sometimes forming impenetrable thickets. Stems reddish-brown to gray, with straight or slightly curved prickles. Leaflets 5-7, ovate or elliptic, finely toothed toward the tip. Flowers on branches lateral from old wood, 5 petals, pink to lilac pink or lavender; sepals lanceolate 1-2 cm long, erect and persistent. Hip is globose. Distinguished from similar species by shrubby, thicket-forming habit, stems with straight prickles and leaves and sepals without glands. Named for Joseph Woods, 1776-1864, English student of roses.
Woodsii forms natural hybrids with R. acicularis, R. arkansana, R. blanda and probably others.
Native from Ontario, Manitoba, Wisconsin, Minnesota, Iowa, south to Texas and northern Mexico, west to California and Alaska.
Produces flowers at 2-5 years of age with a good crop every 2 years. Seed is viable 2-5 years.

Article (misc)  (2005)  Page(s) 110, Table 5.1.  
 
R. macounii : diploid

Book  (2002)  
 
Rosa woodsii. Desert Wild Rose.
Zones: 4-7; sun
Doil: Moist to fairly dry
Native to: Sandy or rocky soils on slopes, woodland margins, washes, roadsides, and ravines; Minnesota to British Columbia south to Arizona, western Texas, and northern Mexico
Size: Height 2-4 feet, width 4-8 feet
Color: Pink; blooms in late spring to early summer
Desert wild rose grows throughout much of the arid West, but it prefers soils that are not extremely dry, especially in the Great Basin. It spreads to form dense thickets of intertwined canes set with long, thin spines, mostly below the nodes. The typical 2-inch-wide flowers are followed by bright red teardrop-shaped fruits. The leaves are divided into 7 to 9 rounded, pointed, or flat-tipped, dull gray leaflets of medium substance. This is certailnyl the best choice for the Great Basin and Rocky Mountains, and the dense colonies help stabilize soil and provide cover for wildlife.

Book  (2000)  Page(s) 60.  Includes photo(s).
 
2 photos = flower + shrub with flowers

Book  (2000)  Page(s) 61.  
 
Rosa woodsii/’Mountain Rose’ = Rosier botanique – rose moyen. De plus d’intérêt pour le botaniste que pour le jardinier, ce rosier est supplanté en culture par sa sous-espèce, Rosa woodsii fendleri, nord-américain comme lui, introduit en 1888. Amérique du Nord, 1820.

Book  (2000)  Page(s) 61.  Includes photo(s).
 
Rosa woodsii fendleri = nord-américain, introduit en 1888. …arbuste érigé aux branches gris pourpré garnies de fins aiguillons, ceux-ce se faisant plus rares sur les rameaux à fleurs, minces et souplement arqués. Ses folioles gris-vert sombre, au nombre de 5 à 7 par feuille, sont en large ovale et dentées. Il se constelle en fin de printemps de fleurs rose lilas, solitaires ou par trois, larges de 4cm, suivies d’une profusion de fruits rouges vif pareils à des cerises, qui font ployer les rameaux sous leurs poids. C’est un très bel arbuste pour jardin sauvage ou pour former des haies. 2 photos = flower + fruit.