Rhododendron prunifolium (Small) Millais

Plumleaf azalea (en)

Species

Angiosperms > Ericales > Ericaceae > Rhododendron

Characteristics

Shrubs or trees, to 5(-6) m, usually not rhizomatous. Stems: bark smooth to vertically furrowed, shredding; twigs glabrous. Leaves deciduous; petiole usually multicellular eglandular-hairy and unicellular-hairy; blade ovate to obovate, 3-11(-15.2) × 1-4(-5) cm, thin, membranous to chartaceous, margins entire, plane, ciliate, eglandular-hairy, apex acute to obtuse, often mucronate, abaxial surface glabrous, adaxial surface glabrous or, rarely, sparsely scattered eglandular-hairy. Floral bud scales glabrous abaxially, margins unicellular-ciliate. Inflorescences 4-7-flowered; bracts similar to bud scales. Pedicels 5-12 mm, eglandular-hairy. Flowers opening after development of leaves, erect to horizontal, not fragrant; calyx lobes 1-3(-4) mm, glabrous or sparsely unicellular-hairy, margins eglandular-hairy; corolla red to orange-red or orange, with indistinct darker blotch on upper lobe, funnelform, 36-53 mm, glabrous or very sparsely long stipitate-glandular-hairy, sometimes also sparsely unicellular-hairy on outer surface, petals connate, lobes 11-22 mm, tube abruptly expanded into lobes, 23-35 mm (± equaling or much longer than lobes); stamens 5, much exserted, ± unequal, 64-84 mm. Capsules borne on erect pedicels, 15-22 × 4.5-7 mm, densely, stiffly eglandular-hairy and sparsely unicellular-hairy. Seeds without distinct tails, flattened portion of testa well developed at each end; testa expanded, dorsiventrally flattened, ± loose. 2n = 26.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) 1.0
Mature height (meter) 5.0
Root system -
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 4-6
Soil humidity 4-7
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 7-7

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 50 - 90
Germination temperacture (C°) 12 - 15
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Rhododendron prunifolium unspecified picture

Distribution

Rhododendron prunifolium world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:219520-2
WFO ID wfo-0001047081
COL ID 4SGN5
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Rhododendron prunifolium