Rosa gymnocarpa Nutt.

Dwarf rose (en)

Species

Angiosperms > Rosales > Rosaceae > Rosa

Characteristics

Shrubs or subshrubs, usually loosely clustered. Stems erect, sometimes spreading, slender, (1–)3–15(–25) dm, sparsely or densely branched; bark sometimes glaucous, reddish brown with age, glabrous; 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. Leaves (2–)4–10(–17) cm; stipules 5–15 × 2–5 mm, auricles flared, 2–3 mm, margins entire, stipitate-glandular, surfaces glabrous, eglandular; petiole and rachis with pricklets, glabrous, rarely finely puberulent, sparsely stipitate-glandular; 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. Inflorescences corymbs, usually 1–3-flowered, rarely in multi-flowered candelabras. Pedicels erect, ± curved as hips mature, slender, 10–25(–35) mm, glabrous, stipitate-glandular, rarely eglandular (except var. serpentina); 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. Flowers 1.5–3 cm diam.; hypanthium narrowly ovoid-urceolate, 2–4 × 1.5–2 mm, glabrous, eglandular, neck 0–1 × 1.5 mm; 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; petals single, deep pink, 8–15 × 6–13 mm; ?stamens 57?; carpels 3–12(–16), styles exsert 1–1.5 mm beyond stylar orifice (1 mm diam.) of hypanthial disc (2–4 mm diam.). 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; sepals, styles, and distal receptacle collectively deciduous at fruit maturity along well-defined, circumscissile line, erect to reflexed. Achenes basiparietal, (1–)4–10(–12), cream to pale brown, (3–)4.5–7 × 2–4 mm.
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A small plant. It grows up to 2 m high. It has many soft prickles. The flowers are in small clusters 2-3 cm wide. The rose hips are 5-10 mm wide.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination entomogamy
Spread -
Mature width (meter) -
Mature height (meter) 2.0
Root system -
Rooting depth (meter) 0.4
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway c3

Environment

Light shade (rarely in full sun) in open woodlands, forest edges, often near streams or rocky sites; at elevations up to 2,000 metres.
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It is a temperate plant. In Canada it grows in open forests.
Light 3-7
Soil humidity 3-5
Soil texture 2-5
Soil acidity 4-7
Soil nutriment -
Hardiness (USDA) 5-8

Usage

The fruit are occasionally used as food. The young leaves and stalks are boiled and drunk as a tea.
Uses beverage fiber forage medicinal smoking spice tea
Edible flowers fruits leaves seeds shoots stems
Therapeutic use Eye Medicine (bark), Ceremonial Medicine (leaf), Dermatological Aid (leaf), Hunting Medicine (unspecified), Poison (unspecified), Tonic (unspecified)
Human toxicity -
Animal toxicity -

Cultivation

Can be grown by cuttings or seedlings. Seeds needs scarification.
Mode cuttings seedlings
Germination duration (days) 30 - 365
Germination temperacture (C°) 12
Germination luminosity -
Germination treatment scarification
Minimum temperature (C°) -19
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Rosa gymnocarpa unspecified picture

Distribution

Rosa gymnocarpa world distribution map, present in Canada and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:30022809-2
WFO ID wfo-0001014400
COL ID 798DC
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Rosa glaucodermis Rosa amplifolia Rosa gymnocarpa Rosa prionota Rosa apiculata Rosa abietorum Rosa piscatoria Rosa gymnocarpa var. gymnocarpa

Lower taxons

Rosa gymnocarpa var. serpentina