Rosa pisocarpa A. Gray (Q4091)

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Rosa pisocarpa is a taxon with the rank species within the section Rosa sect. Rosa
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English
Rosa pisocarpa A. Gray
Rosa pisocarpa is a taxon with the rank species within the section Rosa sect. Rosa

    Statements

    taxon/id/Rosa pisocarpa A. Gray
    0 references
    Rosa pisocarpa A. Gray
    Rosa pisocarpa
    A. Gray
    FNA Editorial Committee. 2014. Flora of North America north of Mexico. Volume 9: Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York.
    accepted
    clustered wild rose (English)
    cluster rose (English)
    pea rose (English)
    pea-fruit rose (English)
    rosier pisocarpe (French)
    Shrubs, loosely clustered or in dense thickets.
    Stems ascending to erect, (2–) 4–20 (–25) dm, openly branched;
    bark ± glaucous when young, dark reddish-brown or dull red with age outer layer may exfoliate as thin ash gray peel, glabrous;
    infrastipular prickles usually paired, erect, rarely curved, usually subulate, 2–10 × 2–4 mm, base glabrous, internodal prickles rare or absent.
    Leaves 5–10 (–13) cm;
    stipules 8–22 × 2–5 mm, auricles flared, 2–5 mm, margins usually entire, sometimes erose or lobed, finely ciliolate to ciliate, eglandular, surfaces glabrous or sparsely pubescent, sparsely stipitate-glandular or eglandular;
    petiole and rachis sometimes with pricklets, glabrous or hairy hairs to 1 mm, sometimes stipitate-glandular;
    leaflets 5–7 (–9), terminal: petiolule 8–12 mm, blade elliptic-ovate, (15–) 20–45 (–60) × 9–16 (–20) mm, widest at or below middle, membranous, base cuneate to obtuse, margins 1 (–2) -serrate, teeth 12–22 per side, on distal 3/4–4/5 of margin, acute, eglandular, apex acute, sometimes obtuse, abaxial surfaces pale green, usually sparsely pubescent, eglandular, adaxial green, dull, glabrous, rarely puberulent.
    Inflorescences corymbs, sometimes panicles or solitary flowers, 1–12-flowered.
    Pedicels erect, sometimes recurved, slender, 10–22 mm, usually glabrous, sometimes finely puberulent, eglandular, rarely stipulate-glandular;
    bracts 2–3, lanceolate, 8–14 × 3–6 mm, margins entire, sometimes serrate, irregularly stipitate-glandular and/or erose, surfaces glabrous or pubescent, eglandular.
    Flowers 2.4–3.8 cm diam.;
    hypanthium ovoid-urceolate, 3–5 × 2.5–3.5 mm, glabrous, rarely setose, eglandular, neck (0–) 0.5–1 × 2 mm;
    sepals spreading, ovatelanceolate, 10–17 × 1.5–3 mm, tip 3–7 (–10) × 1.5–2.5 mm, margins entire, abaxial surfaces sometimes puberulent, densely or sparsely stipitate-glandular, rarely eglandular;
    petals single, pink to deep pink, 12–18 × 10–18 mm;
    carpels 22–35, styles exsert 1–2 mm beyond stylar orifice (1 mm diam.) of hypanthial disc (3.5 mm diam.).
    Hips scarlet, globose, sometimes subglobose or ovoid, 7–15 × 7–13 mm, fleshy, glabrous, eglandular, rarely setose or stipitate-glandular, neck (0–) 1–1.5 × 1.5–3.5 mm;
    sepals persistent, erect.
    Achenes basiparietal, 5–35, tan, 3–4 × 1.5–2.5 mm. 2n = 14, 28.