Rosa gymnocarpa var. serpentina

Ertter & W. H. Lewis

Madroño 55: 174, fig. 2. 2008.

Common names: Gasquet rose
Conservation concernEndemic
Treatment appears in FNA Volume 9. Treatment on page 117. Mentioned on page 116.

Stems (1–) 3–6 (–13) dm. Leaves 2–6 (–8) × 1.5–3 (–4) cm; stipules 5–11 mm; leaflets 5 (–7), often bluish green or red-tinged, ± leathery, terminal: petiolule 2–10 mm, blade broadly elliptic to obovate or ovate to nearly orbiculate, 4–20 × 4–20 mm, apex usually broadly obtuse to rounded, sometimes nearly truncate. Pedicels 10–15 mm, eglandular or stipitate-glandular (in same inflorescence). Flowers 2 cm diam.; petals 8–10 × 6–10 mm. Hips irregularly ovoid to elongate-ellipsoid. Achenes 1–4.


Phenology: Flowering Apr–Jun.
Habitat: Full sun in roadsides, ridges, and other openings in chaparral and stunted forests on ultramafic substrates
Elevation: 400–1500(–2300) m

Discussion

Of conservation concern.

Variety serpentina is the form that usually occurs in full sun on ultramafic substrates in the Siskiyou Mountains of northwestern California and southwestern Oregon.

Selected References

None.

Lower Taxa

None.

"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 +  and glabrous +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
cream +  and pale-brown +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
basiparietal +  and basal +
2mm +  and 4mm +
usually broadly obtuse;rounded +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Walter H. Lewis +, Barbara Ertter +  and Anne Bruneau +
Ertter & W. H. Lewis +
reddish-brown +
glabrous +  and glaucous +
exfoliating +
compound +  and simple +
opposite +  and alternate +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (2 cm20 mm <br />0.02 m <br />) +
lustrous +  and dull +
broadly elliptic +  and obovate or ovate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
membranous +  and more or less leathery +
0.4 cm4 mm <br />0.004 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
lanceolate +  and ovate +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
free +  and distinct +
Gasquet rose +
1-16(-50)-flowered +
rarely puberulent +  and tomentose +
rarely puberulent +  and tomentose +
Calif. +  and Oreg. +
not +  and aggregated +
400–1500(–2300) m +
2 cm20 mm <br />0.02 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 +
Full sun in roadsides, ridges, and other openings in chaparral and stunted forests on ultramafic substrates +
1.8 cm18 mm <br />0.018 m <br /> (2.4 cm24 mm <br />0.024 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
irregularly ovoid +  and elongate-ellipsoid +
0.5 cm5 mm <br />0.005 m <br /> (1.3 cm13 mm <br />0.013 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 +
ovoid-urceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
leathery +  and fleshy +
1-16(-50)-flowered +
crassinucellate +
sparse +  and dense +
3-foliate +  and compound +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
10 cm100 mm <br />0.1 m <br /> (17 cm170 mm <br />0.17 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
deciduous +
2 cm20 mm <br />0.02 m <br /> (?) +  and 6 cm60 mm <br />0.06 m <br /> (?) +
4 cm40 mm <br />0.04 m <br /> (10 cm100 mm <br />0.1 m <br />) +
leathery +  and membranous +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
petiolulate +  and subsessile +
red-tinged +  and bluish green +
elliptic +  and obovate more or less oblong obovate-elliptic lanceolate-elliptic or obovate-oblong +
circumscissile +
well-defined +
entire +  and 2+-serrate +
short-stipitate-glandular +  and stipitate-glandular +
pinnatifid +, entire +, undulate +, sinuate +  and serrulate +
distinct +
0mm +  and 2mm +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
inferior +  and superior +
clustered +, biseriate +  and superposed +
1-30(-50)-flowered +
2.5 cm25 mm <br />0.025 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
stipitate-glandular +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
free +  and distinct +
8mm;10mm +
obovate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
stipitate-glandular +, puberulent +  and glabrous +
1.2 cm12 mm <br />0.012 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Flowering Apr–Jun. +
adnate +, free +, connate +  and distinct +
mixed +  and paired +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
0 +  and 2 +
terete +  and subulate +
1.5 cm15 mm <br />0.015 m <br /> (?) +
stipitate-glandular +, puberulent +  and glabrous +
not arillate +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
deciduous +  and persistent +
free +  and distinct +
0.5 cm5 mm <br />0.005 m <br /> (1 cm10 mm <br />0.01 m <br />) +
ascending +  and reflexed +
lanceolate +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
rarely densely puberulent +  and tomentose +
Conservation concern +  and Endemic +
free +  and distinct +
flexuous +
procumbent +  and sprawling +
spreading +  and erect +
1 +  and 20 +
slender +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (1.1 cm11 mm <br />0.011 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 /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Rosa sect. Cinnamomeae +
Rosa gymnocarpa var. serpentina +
Rosa gymnocarpa +
variety +
0.1mm +  and 5mm +
1 cm10 mm <br />0.01 m <br /> (?) +
gland-tipped +
7 (?) +  and 13 (?) +
obtuse +  and acute +
inconspicuous +
enlarged +  and small +
rhizomatous +  and open +
subshrub +  and shrub +
small +  and miniature +