There are currently no active references in this article.
A small tree to 20 ft in the wild state, or a many-stemmed shrub. Young shoots grey-green or yellowish but ultimately becoming striped after the fashion of the snake-bark group. Leaves roundish-ovate, 2 to 21⁄2 in. long, 11⁄2 to 2 in. wide, heart-shaped at the base, palmately three-veined, triangular-ovate in outline, usually with two small, spreading, sharply acuminate lobes; margins sharply saw-toothed; undersides rusty-pubescent near the base but soon glabrous. Flowers in pendulous racemes. Wings of fruit curved, spreading at an obtuse angle or almost horizontally.
Native of China; discovered by the missionary Giraldi in Shensi and introduced to Kew from the Arnold Arboretum in 1927. In some of its forms A. grosseri has almost unlobed leaves, and is then difficult to distinguish from A. davidii. However, the toothing of the leaves is always sharper than in that species, and the leaves smaller and proportionately wider.
This is placed under A. tegmentosum by Edward Murray, as A. tegmentosum subsp. grosseri (Pax) E. Murray. But de Jong (op. cit., p. 144) considers that it is better grouped with A. davidii.
The example at Kew in the Maple Collection was raised from seeds collected by Joseph Rock under his number 15053.
var. hersii - specimens: Kew, Maple Collection, from the original introduction by Hers, 33 × 31⁄4 ft (1981); R.H.S. Garden, Wisley, Surrey, on Battleston Hill, 52 × 4 ft (1975); Wakehurst Place, Sussex, Golf Ground Extension, pl. 1936, 52 × 4 ft (1981); Westonbirt, Glos., two trees pl. 1942, 46 × 33⁄4 ft at 2 ft and 42 × 31⁄4 ft at 2 ft (1981); Talbot Manor, Norfolk, pl. 1948, 39 × 4 ft (1978).
A. hersii Rehd