Rosa woodsii subsp. arizonica

(Rydberg) W. H. Lewis & Ertter

Novon 17: 350. 2007.

Common names: Arizona rose
Illustrated
Basionym: Rosa arizonica Rydberg in N. L. Britton et al., N. Amer. Fl. 22: 516. 1918
Synonyms: R. granulifera Rydberg R. woodsii var. arizonica (Rydberg) W. H. Lewis
Treatment appears in FNA Volume 9. Treatment on page 108. Mentioned on page 106.
Revision as of 12:52, 30 July 2020 by imported>Volume Importer
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Shrubs, 10–25+ dm, usually forming thickets. Stems openly branched; prickles usually present on distal stems and branches, infrastipular strongly curved or hooked, sometimes introrse, stout, sometimes flattened, 2–8 mm, internodal sparse or absent. Terminal leaflets usually elliptic, rarely cordate or narrowly ovate, 10–30 mm. Inflorescences 1 or 2 (–4) -flowered. Sepals: abaxial surfaces usually stipitate-glandular, sometimes eglandular. 2n = 14.


Phenology: Flowering May–Jun.
Habitat: Sandy soil of oak, juniper, and pine forests, alluvial flats, brushy hillsides, sandstone cliff bases, sunny road banks
Elevation: 1300–2400 m

Distribution

V9 158-distribution-map.jpg

Ariz., Nev., N.Mex., Utah, Mexico (Chihuahua)

Discussion

Subspecies arizonica occurs primarily along streams in forested areas of Arizona, southern Nevada (Spring Mountains), northwestern New Mexico, and southern Utah with extensions into mountainous regions. Tall open habit, strongly curved prickles, and stipitate-glandular sepals are diagnostic, although not always present in combination. Plants with relatively few or no prickles, endemic to the West Fork of Oak Creek Canyon in Coconino County, Arizona, are var. ertterae W. H. Lewis, the Ertter rose; conservation attention to this variety is warranted. The remainder of the subspecies is var. arizonica.

Selected References

None.

Lower Taxa

None.

"widest" is not a number."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property.

stipitate-glandular +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
tan +  and dark tan +
0.4 cm4 mm <br />0.004 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
basiparietal +  and basal +
2mm +  and 4mm +
glabrous +  and glaucous +
pubescent +  and glabrous +
lustrous +  and dull +
obtuse;acute +
0.2 cm2 mm <br />0.002 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Walter H. Lewis +, Barbara Ertter +  and Anne Bruneau +
(Rydberg) W. H. Lewis & Ertter +
exfoliating +
compound +  and simple +
opposite +  and alternate +
obtuse +  and cuneate +
Rosa arizonica +
3.5 cm35 mm <br />0.035 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
lustrous +  and dull +
cordate +, ovate +, elliptic +  and obovate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
membranous +
0.6 cm6 mm <br />0.006 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
persistent +
0.9 cm9 mm <br />0.009 m <br /> (2 cm20 mm <br />0.02 m <br />) +
lanceolate +  and ovate +
0.4 cm4 mm <br />0.004 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
free +  and distinct +
Arizona rose +
1-16(-50)-flowered +
rarely puberulent +  and tomentose +
rarely puberulent +  and tomentose +
Ariz. +, Nev. +, N.Mex. +, Utah +  and Mexico (Chihuahua) +
not +  and aggregated +
1300–2400 m +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
not +  and aggregated +
eglandular +  and glandular +
7 cm70 mm <br />0.07 m <br /> (11 cm110 mm <br />0.11 m <br />) +
urceolate +, pyriform +, oblong +, ellipsoid +, ovoid-obovoid +  and globose +
Sandy soil of oak, juniper, and pine forests, alluvial flats, brushy hillsides, sandstone cliff bases, sunny road banks +
0.01 cm0.1 mm <br />1.0e-4 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
puberulent-velutinous +
0.1 cm1 mm <br />0.001 m <br /> (?) +
1.3 cm13 mm <br />0.013 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
purplish red +, orange-red +  and red +
0.6 cm6 mm <br />0.006 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
urceolate +, oblong +, ovoid +, depressed-globose +  and globose +
0.5 cm5 mm <br />0.005 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
conic +  and flat +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
purplish black +, purplish red +, orange-red +  and red +
stipitate-glandular +  and glabrous +
globose +, oblong +  and ovoid +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
leathery +  and fleshy +
crassinucellate +
usually sparse +  and dense +
3-foliate +  and compound +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
deciduous +
2.5 cm25 mm <br />0.025 m <br /> (8 cm80 mm <br />0.08 m <br />) +
leathery +  and membranous +
petiolulate +  and subsessile +
elliptic +  and obovate more or less oblong obovate-elliptic lanceolate-elliptic or obovate-oblong +
eglandular +, ciliate +  and entire +
entire +, 1(-2+)-serrate +  and serrate +
undulate +
0 cm0 mm <br />0 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
distinct +
1mm +  and 2mm +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
inferior +  and superior +
clustered +, biseriate +  and superposed +
1-30(-50)-flowered +
2 cm20 mm <br />0.02 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
stipitate-glandular +  and glabrous +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
pink +  and deep rose +
free +  and distinct +
15mm;20mm +
obovate +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
stipitate-glandular +  and glabrate +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Flowering May–Jun. +
adnate +, free +, connate +  and distinct +
0.7 cm7 mm <br />0.007 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
declined +  and erect +
flattened +  and hooked +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
stipitate-glandular +  and glabrate +
not arillate +
1.5 cm15 mm <br />0.015 m <br /> (2.1 cm21 mm <br />0.021 m <br />) +
persistent +
free +  and distinct +
erect +  and spreading +
ovatelanceolate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
rarely densely puberulent +  and tomentose +
Illustrated +
free +  and distinct +
flexuous +
procumbent +  and sprawling +
1 +  and 20 +
slender +  and stout +
1.6 cm16 mm <br />0.016 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
persistent +
not elongate +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
pubescent +  and glabrous +
R. granulifera +  and R. woodsii var. arizonica +
Rosa woodsii subsp. arizonica +
Rosa woodsii +
subspecies +
ovate +, cordate +  and elliptic +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
4mm +  and 6mm +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
7 (?) +  and 14 (?) +
inconspicuous +
enlarged +  and small +
rhizomatous +  and open +
small +  and miniature +