Rosa gymnocarpa Nuttall in J. Torrey and A. Gray (Q4069)
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Rosa gymnocarpa is a taxon with the rank species within the section Rosa sect. Rosa
| Language | Label | Description | Also known as |
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| English |
Rosa gymnocarpa Nuttall in J. Torrey and A. Gray
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Rosa gymnocarpa is a taxon with the rank species within the section Rosa sect. Rosa
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Statements
taxon/id/Rosa gymnocarpa Nuttall
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Rosa gymnocarpa Nuttall
Rosa gymnocarpa
Nuttall
FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
accepted
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CA-BC
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US-CA
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US-ID
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US-MT
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US-OR
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US-WA
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Shrubs or subshrubs, usually loosely clustered.
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Stems erect, sometimes spreading, slender, (1–) 3–15 (–25) dm, sparsely or densely branched;
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infrastipular prickles 0–2, erect, subulate, 2–8 (–10) × 1.5 mm, terete, internodal prickles similar or smaller, sparse to dense, sometimes absent on distal stems, mixed with aciculi, base terete, eglandular.
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Leaves (2–) 4–10 (–17) cm;
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stipules 5–15 × 2–5 mm, auricles flared, 2–3 mm, margins entire, stipitate-glandular, surfaces glabrous, eglandular;
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petiole and rachis with pricklets, glabrous, rarely finely puberulent, sparsely stipitate-glandular;
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leaflets 5–9 (–11), terminal: petiolule (2–) 5–12 (–20) mm, blade elliptic to obovate or ovate to nearly orbiculate, (4–) 10–40 (–60) × (4–) 10–20 (–40) mm, membranous to ± leathery, margins 2+-serrate, teeth 7–13 per side, obtuse to acute, gland-tipped, apex obtuse, sometimes nearly acute, rounded, or truncate, abaxial surfaces pale green, glabrous, eglandular, adaxial green, dull, glabrous.
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Inflorescences corymbs, usually 1–3-flowered, rarely in multiflowered candelabras.
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Pedicels erect, ± curved as hips mature, slender, 10–25 (–35) mm, glabrous, stipitate-glandular, rarely eglandular (except var. serpentina);
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bracts some early caducous, 1 or 2, attached near pedicel bases, ovate or lanceolate, 4–12 × 2–8 mm, margins entire, short-stipitate-glandular, apex acute or rounded, surfaces glabrous, eglandular.
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Flowers 1.5–3 cm diam.;
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hypanthium narrowly ovoid-urceolate, 2–4 × 1.5–2 mm, glabrous, eglandular, neck 0–1 × 1.5 mm;
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sepals ascending to reflexed, lanceolate, 5–10 × 2–3 mm, tip 0.1–5 × 1 mm, margins entire, abaxial surfaces glabrous, eglandular, sometimes stipitate-glandular;
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petals single, deep pink, 8–15 × 6–13 mm;
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carpels 3–12 (–16), styles exsert 1–1.5 mm beyond stylar orifice (1 mm diam.) of hypanthial disc (2–4 mm diam.).
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Hips scarlet, irregularly ellipsoid or ellipsoid to nearly globose, 7–15 × 5–13 mm, fleshy, glabrous, eglandular, neck 0–2 × 1.5–2.5 mm;
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sepals, styles, and distal receptacle collectively deciduous at fruit maturity along well-defined, circumscissile line, erect to reflexed.
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Achenes basiparietal, (1–) 4–10 (–12), cream to pale-brown, (3–) 4.5–7 × 2–4 mm.
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membranous
more or less leathery
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