A hybrid, F. suspensa × F. viridissima, growing to 3 m tall. Branches yellow-green, arching to erect and with compartmented pith except at the nodes, where it is solid. Leaves more or less lanceolate and toothed, sometimes 3-lobed on stronger shoots. Flowers 3 per leaf axil, petals deep yellow, spreading, twisted; spring.
F. suspensa (Thunb.) Vahl from China and flowering in spring is occasionally offered; it has hollow branches with solid pith at the nodes.
Source: (2002). Oleaceae. In: . Horticultural Flora of South-eastern Australia. Volume 4. Flowering plants. Dicotyledons. Part 3. The identification of garden and cultivated plants. University of New South Wales Press.
Forsythia ×intermedia 'Beatrix Farrand'
Erect shrub with single flowers. Leaves blue-green with large triangular teeth. Flowers pale yellow, fruits numerous.
A tetraploid plant.
A cultivar of uncertain origin and name of uncertain application.
Forsythia ×intermedia 'Lynwood'
Semi-erect shrub. Leaves with fewer teeth than those of F. 'Spectabilis'. Flowers along the branches, petals not spreading.
A bud sport of F. 'Spectabilis' from the garden of Miss Adair, Cookstown, County Tyrone, Ireland, introduced Slieve Donard Nursery in 1935.