Rosa sect. Laevigatae

Thory

Prodr. Monogr. Rosier, 37. 1820.

Introduced
Synonyms: Rosa sect. Sinicae Crépin
Treatment appears in FNA Volume 9. Treatment on page 87. Mentioned on page 78.

Shrubs, evergreen, forming dense thickets; rhizomatous, rhizomes relatively long. Stems climbing, 20–75 (–100) dm; distal branches glabrous, eglandular; infrastipular and internodal prickles paired or single, curved or hooked, ± flattened, stout. Leaves persistent, 4–8 cm, leathery; stipules caducous, ± free from petiole, margins fimbriate, some teeth gland-tipped; leaflets 3 (–5), terminal: petiolule 9–13 mm, blade ovate-elliptic or lanceolate, 40–65 × 30–40 mm, abaxial surfaces glabrous, eglandular, adaxial lustrous. Inflorescences 1 (or 2) -flowered. Pedicels erect, stout, 12–30 mm, glabrous, eglandular, setae apical or absent; bracts caducous, 0 or 1 (or 2), margins serrate, most teeth gland-tipped. Flowers 5.5–8 (–10) cm diam.; hypanthium cupulate, densely setose, eglandular; sepals ± persistent, erect, lanceolate or ovatelanceolate, 18–35 × 4 mm, margins entire, abaxial surfaces glabrous or sparsely pubescent, stipitate-glandular; petals single, usually white, rarely rose; carpels 45–50, styles free, glabrous or pilose, hypanthium orifice 1.5–2 mm diam., hypanthial disc conic, 6–8 mm diam. Hips dark red, ovoid to oblong, 20–35 × 9–20 mm, glabrous, densely setose (with age only setae remnants), eglandular; sepals tardily deciduous, spreading to reflexed. Achenes basiparietal.

Distribution

Introduced; Asia, also in West Indies, s Africa, Atlantic Islands, Pacific Islands

Discussion

Species 1.

Selected References

None.

Lower Taxa

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

... more about "Rosa sect. Laevigatae"
stipitate-glandular +, pubescent +  and glabrous +
Walter H. Lewis +, Barbara Ertter +  and Anne Bruneau +
gray +, red +  and brown +
exfoliating +
compound +  and simple +
opposite +  and alternate +
not cuneate +
4 cm40 mm <br />0.04 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
lustrous +  and dull +
smooth +  and rugose +
lanceolate +  and ovate-elliptic +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
? (?) +  and ? (?) +
30mm +  and 40mm +
free +  and distinct +
1-16(-50)-flowered +
Asia +, also in West Indies +, s Africa +, Atlantic Islands +  and Pacific Islands +
not +  and aggregated +
5.5 cm55 mm <br />0.055 m <br /> (8 cm80 mm <br />0.08 m <br />) +
not +  and aggregated +
eglandular +  and glandular +
urceolate +, pyriform +, oblong +, ellipsoid +, ovoid-obovoid +  and globose +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
setose +  and glabrous +
ovoid +  and oblong +
leathery +  and fleshy +
0.9 cm9 mm <br />0.009 m <br /> (2 cm20 mm <br />0.02 m <br />) +
0.6 cm6 mm <br />0.006 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
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 +
crassinucellate +
flattened +  and hooked +
3-foliate +  and compound +
15 cm150 mm <br />0.15 m <br /> (18 cm180 mm <br />0.18 m <br />) +
persistent +
4 cm40 mm <br />0.04 m <br /> (8 cm80 mm <br />0.08 m <br />) +
leathery +
petiolulate +  and subsessile +
elliptic +  and obovate more or less oblong obovate-elliptic lanceolate-elliptic or obovate-oblong +
entire +  and serrate +
fimbriate +
distinct +
inferior +  and superior +
clustered +, biseriate +  and superposed +
1-16(-50)-flowered +
1.2 cm12 mm <br />0.012 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Rose (?) +  and White (?) +
free +  and distinct +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
adnate +, free +, connate +  and distinct +
Prodr. Monogr. Rosier, +
0.5 cm5 mm <br />0.005 m <br /> (?) +
not arillate +
deciduous +  and persistent +
free +  and distinct +
spreading +  and reflexed +
ovatelanceolate +  and lanceolate +
4 cm40 mm <br />0.04 m <br /> (?) +
rarely densely puberulent +  and tomentose +
Introduced +
free +  and distinct +
branched +  and simple +
arching +, erect +  and spreading +
1 +  and 20 +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
persistent +
pilose +  and glabrous +
not elongate +
glandular +  and eglandular +
tomentose +, pubescent +, puberulent +  and glabrous +
Rosa sect. Sinicae +
Rosa sect. Laevigatae +
Rosa subg. Rosa +
section +
prolonged +
gland-tipped +
inconspicuous +
enlarged +  and small +