Forsythia Vahl

Forsythia (en), Forsythia (fr)

Genus

Angiosperms > Lamiales > Oleaceae

Characteristics

Fls perfect; cal deeply 4-lobed; cor deeply 4-parted, the short tube campanulate, the lobes oblong, widely spreading; stamens 2, very short, borne on the short cor-tube; fr a bilocular, many-seeded capsule; much branched shrubs with simple, entire or toothed lvs. 7, Eurasia.Several spp. are commonly cult. and sometimes persist, but apparently do not become naturalized. The most common, with many cultivars, are F. viridissima Lindl., suberect, with cross-chambered pith, merely toothed lvs, and rather light yellow or greenish-yellow fls; F. suspensa (Thunb.) Vahl, more arching, with hollow branches solid at the nodes, toothed or often 3-parted lvs, and golden yellow fls; and their hybrid, F. ×intermedia Zabel.
More
Shrubs deciduous. Branches hollow or with lamellate pith; branchlets ± 4-angled. Leaves opposite, simple, rarely 3-parted to 3-foliolate, petiolate; leaf blade serrate or entire. Flowers appearing before leaves, bisexual, heterostylous, 1 to several fascicled in leaf axils, pedicellate. Calyx deeply 4-lobed, persistent. Corolla yellow, 4-parted; tube campanulate; lobes longer than tube, imbricate in bud. Stamens 2, inserted at base of corolla tube, scarcely exserted. Ovules many in each locule, pendulous. Style slender; stigma 2-cleft. Fruit a loculicidal capsule. Seeds numerous in each locule, slightly winged; endosperm absent; radicle erect.
Life form perennial
Growth form shrub
Growth support -
Foliage retention
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) -
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) 4-9

Usage

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

Cultivation

Mode -
Germination duration (days) 30 - 90
Germination temperacture (C°) 12 - 18
Germination luminosity -
Germination treatment -
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -