Rhododendron cumberlandense E.L.Braun

Cumberland rhododendron (en)

Species

Angiosperms > Ericales > Ericaceae > Rhododendron

Characteristics

Shrubs, to 2 m, usually rhizomatous. Stems: bark smooth to vertically furrowed, shredding; twigs very sparsely to conspicuously multicellular eglandular-hairy (hairs un-branched), otherwise glabrous or densely unicellular-hairy. Leaves deciduous; petiole usually multicellular eglandular-hairy and usually unicellular-hairy; blade ovate to obovate, 3.1-8.1 × 1.3-3.5 cm, thin, membranous to chartaceous, margins entire, plane, unicellular-ciliate, apex acute to obtuse, often mucronate, abaxial surface glabrous or very sparsely eglandular-hairy, (usually glaucous), adaxial surface glabrous or sparsely scattered eglandular-hairy. Floral bud scales glabrous abaxially, margins usually ciliate distally, glandular proximally. Inflorescences 3-7-flowered; bracts similar to bud scales. Pedicels 4-9 mm, eglandular-hairy, rarely stipitate-glandular-hairy (then sepals eglandular), otherwise sparsely to densely unicellular-hairy. Flowers opening after leaves have expanded, erect to horizontal, acrid-scented; calyx lobes 1-3 mm, scattered, long-stipitate, usually eglandular-hairy, and unicellular-hairy, margins extremely long stipitate-eglandular-hairy (rarely long stipitate-glandular-hairy, then pedicels eglandular); corolla red, with indistinct blotch or darker-colored region on upper lobe, funnelform, 27-45 mm, scattered stipitate-glandular-hairy, otherwise ± densely unicellular-hairy on outer surface, petals connate, lobes 14-30 mm, tube abruptly expanding into lobes, 14-24 mm (equaling or much longer than lobes); stamens 5, much exserted, ± unequal, 42-62 mm. Capsules borne on erect pedicels, 12-28 × 5-8 mm, sparsely to densely long stipitate-eglandular-hairy and sparsely to moderately unicellular-hairy. Seeds without distinct tails, flattened portion of testa may be 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) -
Mature height (meter) 1.5 - 2.0
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 -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 5-8

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 -

Distribution

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

Identifiers

LSID urn:lsid:ipni.org:names:219473-2
WFO ID wfo-0001047634
COL ID 6X73R
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Rhododendron cumberlandense