Rosa sect. Pimpinellifoliae

de Candolle ex Seringe

Mus. Helv. Bot. 1: 3. 1818.

Introduced
Synonyms: Rosa sect. Luteae Crépin Rosa sect. Sericeae Crépin
Treatment appears in FNA Volume 9. Treatment on page 93. Mentioned on page 78, 82.

Subshrubs, forming dense patches; rhizomatous, rhizomes long. Stems erect, 2–10 (–15) dm; distal branches glabrous, eglandular; infrastipular prickles absent, internodal prickles erect or ± curved, usually intermixed with aciculi. Leaves persistent, 2.5–8 cm, membranous; stipules persistent, adnate to petiole, auricles flared, margins entire or serrate, eglandular or glandular; leaflets (5–) 9–11 (–13), terminal: petiolule 2–4 mm, blade oblong-ovate, suborbiculate, or broadly elliptic, 5–22 × 5–12 mm, abaxial surfaces glabrous, eglandular, adaxial green, dull, glabrous. Inflorescences: flowers solitary. Pedicels erect, slender, 15–35 mm, glabrescent, eglandular, sometimes with aciculi; bracts absent. Flowers 2–4 cm diam.; hypanthium subglobose, glabrous, eglandular; sepals persistent, erect, ovatelanceolate, 10–12 × 2.5–3 mm, margins entire, abaxial surfaces glabrous, eglandular; petals single, white [rarely pink]; carpels 18–23, styles free, lanate, stylar orifice 2.5–3 mm diam., hypanthial disc flat, 4–4.5 mm diam. Hips blackish purple, globose or subglobose, 8–13 × 8–16 mm, lustrous, glabrous, eglandular; sepals persistent, erect. Achenes basiparietal.

Distribution

Introduced; Eurasia, also in Atlantic Islands (Iceland), Pacific Islands (New Zealand)

Discussion

Species ca. 25 (1 in the flora).

In addition to the species treated here, yellow-flowered Rosa hugonis Hemsley has been reported from Ontario.

Selected References

None.

Lower Taxa

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

Walter H. Lewis +, Barbara Ertter +  and Anne Bruneau +
de Candolle ex Seringe +
gray +, red +  and brown +
exfoliating +
compound +  and simple +
opposite +  and alternate +
not cuneate +
0.5 cm5 mm <br />0.005 m <br /> (2.2 cm22 mm <br />0.022 m <br />) +
lustrous +  and dull +
smooth +  and rugose +
elliptic +, suborbiculate +  and oblong-ovate +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
? (?) +  and ? (?) +
5mm +  and 12mm +
free +  and distinct +
1-16(-50)-flowered +
Eurasia +, also in Atlantic Islands (Iceland) +  and Pacific Islands (New Zealand) +
not +  and aggregated +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
not +  and aggregated +
eglandular +  and glandular +
urceolate +, pyriform +, oblong +, ellipsoid +, ovoid-obovoid +  and globose +
blackish purple +
0.8 cm8 mm <br />0.008 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
subglobose +  and globose +
leathery +  and fleshy +
0.8 cm8 mm <br />0.008 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (0.45 cm4.5 mm <br />0.0045 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 +
0.2 cm2 mm <br />0.002 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
leathery +  and fleshy +
1-16(-50)-flowered +
crassinucellate +
3-foliate +  and compound +
15 cm150 mm <br />0.15 m <br /> (18 cm180 mm <br />0.18 m <br />) +
persistent +
2.5 cm25 mm <br />0.025 m <br /> (8 cm80 mm <br />0.08 m <br />) +
membranous +
petiolulate +  and subsessile +
elliptic +  and obovate more or less oblong obovate-elliptic lanceolate-elliptic or obovate-oblong +
glandular +, eglandular +  and serrate +
crenate +, incised +  and serrate +
distinct +
inferior +  and superior +
clustered +, biseriate +  and superposed +
1-16(-50)-flowered +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
free +  and distinct +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
adnate +, free +, connate +  and distinct +
Mus. Helv. Bot. +
0.5 cm5 mm <br />0.005 m <br /> (?) +
not arillate +
persistent +
free +  and distinct +
ovatelanceolate +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
rarely densely puberulent +  and tomentose +
Introduced +
free +  and distinct +
branched +  and simple +
procumbent +  and climbing +
1 +  and 20 +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
persistent +
not elongate +
glandular +  and eglandular +
tomentose +, pubescent +, puberulent +  and glabrous +
Rosa sect. Luteae +  and Rosa sect. Sericeae +
Rosa sect. Pimpinellifoliae +
Rosa subg. Rosa +
section +
prolonged +
inconspicuous +
enlarged +  and small +