Rosa glauca

Pourret

Hist. & Mém. Acad. Roy. Sci. Toulouse 3: 326. 1788.

Common names: Redleaf rose rosier glauque
Introduced
Synonyms: Rosa rubrifolia Villars
Treatment appears in FNA Volume 9. Treatment on page 98. Mentioned on page 95.

Shrubs, erect and tall. Stems ± flexuous, erect, to 20 dm, sparsely branched, distal branches and leaves glaucous, with purplish bloom; bark becoming redbrown, glabrous; infrastipular prickles absent, internodal prickles sparse or absent, aciculi absent or erect, curved, or declined, subulate, 2–5 × 1.5–4.5 mm, base mostly broad, eglandular. Leaves 6–10.5 cm; stipules 13–16 × 1.5–2 mm, auricles flared, 2.5–5 mm, margins entire, eglandular or sparsely gland-fringed, surfaces glabrous, eglandular; petiole and rachis usually with pricklets, glabrous, eglandular; leaflets 5–7 (–9), terminal: petiolule 10–20 mm, blade narrowly elliptic to ovate, 20–45 × 15–25 mm, leathery, base cuneate, sometimes rounded, margins 1-serrate, eglandular or few gland-tipped, teeth 12–18 per side, eglandular, apex acute, abaxial surfaces pale green, sometimes dull red, glaucous, glabrous, eglandular, adaxial green-red or purplish, glaucous, dull, glabrous. Inflorescences corymbs, rarely panicles, 1–5-flowered. Pedicels erect, slender, (10–) 15–25 mm, glabrous, stipitate-glandular; bracts 1 or 2, narrowly ovatelanceolate, 8–23 × 3–6 mm, margins entire, eglandular, surfaces glabrous, eglandular. Flowers 2–3 cm diam.; hypanthium narrowly ovoid, 5.5–7 × 3.5–5.5 mm, glabrous, eglandular, neck purplish, absent or 1 × 2 mm; sepals spreading, lanceolate, 15–25 × 1.5–2 mm, tip 10–15 × 1 mm, margins entire, sometimes pinnatifid, abaxial surfaces glabrous, mostly stipitate-glandular; petals single, deep pink to crimson-red, sometimes white basally, 8–14 × 5–6 mm; carpels 30–32, styles exsert 1–2 mm beyond stylar orifice (1.5–2 mm diam.) of hypanthial disc (3 mm diam.). Hips dark brownish red to crimson red, globose, ovoid, or obovoid, 10–13 × 9–11 mm, fleshy, glabrous, eglandular, neck absent; sepals deciduous as hips mature, erect to spreading. Achenes basiparietal, 15–23, light tan to tan, 4–4.5 × 2.5–3 mm. 2n = 28.


Phenology: Flowering May–Jul.
Habitat: Roadsides, wastelands, neglected areas
Elevation: 0–2000 m

Distribution

V9 143-distribution-map.jpg

Introduced; N.B., Nfld. and Labr. (Nfld.), N.S., Que., Colo., Ill., Maine, Mass., Minn., N.Y., S.C., c, s Europe, also in n Europe

Discussion

Rosa glauca, included by A. Rehder (1940) in sect. Caninae, belongs in sect. Rosa (I. Klášterský 1968).

Rosa glauca is an infrequent introduction to the flora area from the mountains of Europe. As its garden cultivation increases, the species will continue to spread and become naturalized. The following collection label is a perfect illustration: W. A. Weber 15003 (COLO, NY), 19 June 1973, at Boulder, Colorado, found at the bottom of Gregory Gulch at West end of Baseline Rd., north slopes at base of talus slides, 2000 m, thoroughly naturalized cultivar, probably spread by jays from adjacent city. The shrubs usually produce abundant hips and achenes as well as rhizomatous shoots; once established the plants reproduce vegetatively and sexually.

Rosa glauca consists of erect shrubs reaching 20 dm; more or less flexuous stems and glaucous distal branches have a purplish bloom with sparse or no broad-based internodal prickles. Leaflet blades are glaucous abaxially and often crimson-red; adaxially, blades are purplish-glaucous.

The taxonomic affiliation of the name Rosa ferruginea Villars is uncertain.

Selected References

None.

Lower Taxa

None.

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

... more about "Rosa glauca"
red +  and pale green +
stipitate-glandular +, glabrous +  and glaucous +
light tan +  and tan +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
basiparietal +  and basal +
2.5mm +  and 3mm +
purplish +  and green-red +
glabrous +  and glaucous +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
Walter H. Lewis +, Barbara Ertter +  and Anne Bruneau +
Pourret +
exfoliating +
compound +  and simple +
opposite +  and alternate +
rounded +  and cuneate +
4 cm40 mm <br />0.04 m <br /> (6.3 cm63 mm <br />0.063 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
lustrous +  and dull +
narrowly elliptic +  and ovate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
15mm +  and 25mm +
persistent +
0.8 cm8 mm <br />0.008 m <br /> (2.3 cm23 mm <br />0.023 m <br />) +
ovatelanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
free +  and distinct +
Redleaf rose +  and rosier glauque +
1-16(-50)-flowered +
rarely puberulent +  and tomentose +
N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, Que. +, Colo. +, Ill. +, Maine +, Mass. +, Minn. +, N.Y. +, S.C. +, c +, s Europe +  and also in n Europe +
not +  and aggregated +
0–2000 m +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
not +  and aggregated +
eglandular +  and glandular +
urceolate +, pyriform +, oblong +, ellipsoid +, ovoid-obovoid +  and globose +
Roadsides, wastelands, neglected areas +
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 />) +
red +  and crimson red +
1 cm10 mm <br />0.01 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
obovoid +, ovoid +  and globose +
0.9 cm9 mm <br />0.009 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 />) +
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 +
0.55 cm5.5 mm <br />0.0055 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
leathery +  and fleshy +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.55 cm5.5 mm <br />0.0055 m <br />) +
1-16(-50)-flowered +
crassinucellate +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
declined +  and erect +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
3-foliate +  and compound +
11 cm110 mm <br />0.11 m <br /> (17 cm170 mm <br />0.17 m <br />) +
deciduous +
6 cm60 mm <br />0.06 m <br /> (10.5 cm105 mm <br />0.105 m <br />) +
leathery +  and membranous +
petiolulate +  and subsessile +
elliptic +  and obovate more or less oblong obovate-elliptic lanceolate-elliptic or obovate-oblong +
eglandular +, gland-tipped +, few +  and 1-serrate +
pinnatifid +  and gland-fringed +
distinct +
inferior +  and superior +
clustered +, biseriate +  and superposed +
1-30(-50)-flowered +
setose-glandular +, sessile +, stipitate +  and eglandular +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
stipitate-glandular +  and glabrous +
1.5 cm15 mm <br />0.015 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
free +  and distinct +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Flowering May–Jul. +
adnate +, free +, connate +  and distinct +
mixed +  and paired +
declined +  and erect +
subulate +, deltate +, terete +  and hooked +
Hist. & Mém. Acad. Roy. Sci. Toulouse +
0.5 cm5 mm <br />0.005 m <br /> (?) +
not arillate +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
deciduous +
free +  and distinct +
erect +  and spreading +
lanceolate +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
rarely densely puberulent +  and tomentose +
Introduced +
free +  and distinct +
flexuous +
procumbent +  and sprawling +
1 +  and 20 +
1.3 cm13 mm <br />0.013 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 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 />) +
Rosa rubrifolia +
Rosa glauca +
Rosa sect. Rosa +
species +
10mm +  and 15mm +
1 cm10 mm <br />0.01 m <br /> (?) +
12 +  and 18 +
inconspicuous +
enlarged +  and small +
rhizomatous +  and open +
small +  and miniature +