Rhododendron exasperatum Tagg

Species

Angiosperms > Ericales > Ericaceae > Rhododendron

Characteristics

Shrubs or small trees, 2–5 m tall; young shoots ca. 7 mm in diam. below inflorescence, densely glandular-setose. Petiole short and stout, 10–15 mm, usually setose, occasionally without setae; leaf blade leathery, broadly ovate or subobovate, 10–18 × 4–10 cm; base rounded; margin with caducous setae; apex rounded, acuminate; abaxial surface greenish, sparse brownish glandular-hairy, midrib setose, mainly at base; adaxial surface deep green, nearly smooth, with scattered setae, base of midrib with or without brownish setae; midrib narrow, raised abaxially, impressed adaxially; lateral veins 12–15-paired, slightly raised abaxially, slightly impressed adaxially, net veins inconspicuous. Inflorescence densely umbellate, 10–15-flowered; rachis ca. 5 mm. Pedicel 1(–1.5) cm, slightly glandular; calyx lobes 5, 4–5 mm, subovate, glabrous; corolla tubular-campanulate, fleshy, deep red, 3.5–4.5 × ca. 3.5 cm, with small deep red nectar pouches at base, glabrous inside; lobes 5, slightly unequal, ca. 1 × 1.8 cm, apex emarginate; stamens 10, unequal, 1.3–2.2 cm, filaments glabrous; anthers oblong, brown, 1.6–2 × 1–1.2 mm; ovary broadly cone-shaped, apex truncate, ca. 6 × 3 mm, densely glandular-hairy; style slender, ca. 2.2 cm, glabrous, stigma flattened, truncate, ca. 1 mm wide. Young fruits with dense persistent hair bases; calyx persistent.
Life form perennial
Growth form shrub
Growth support free-standing
Foliage retention evergreen
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 2.0 - 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 -
Soil humidity -
Soil texture -
Soil acidity -
Soil nutriment -
Hardiness (USDA) 7-10

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 exasperatum world distribution map, present in China, India, and Myanmar

Identifiers

LSID urn:lsid:ipni.org:names:332398-1
WFO ID wfo-0001048812
COL ID 78V48
BDTFX ID -
INPN ID -
Wikipedia (EN)
Wikipedia (FR)

Synonyms

Rhododendron exasperatum