Diploglottis alaticarpa

Diploglottis alaticarpa is a plant in the maple and lychee family Sapindaceae which is endemic to northeast Queensland, Australia. It was first recognised as a distinct species in 1994 and was formally described in 2014.

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Diploglottis alaticarpa is an evergreen medium-sized tree up to 22 m (72 ft) tall with a trunk diameter (DBH) up to 40 cm (16 in). The new growth is sericeous (silky) and silvery pink. The compound leaves are arranged alternately on the branches and may reach up to 41 cm (16 in) long including the petiole. They have between 9 and 19 stiff, glabrous (hairless) leaflets measuring up to 18 cm (7.1 in) long by 6 cm (2.4 in) wide and generally oblong to oblong-elliptic in shape. The inflorescence is a sericeous panicle produced in the leaf axils measuring up to 24 cm (9.4 in) long. The flowers are either staminate (functionally male) or bisexual, up to 5 mm (0.20 in) long and held on 2 mm (0.08 in) long pedicels. The calyx is 5-lobed, each of which is about 2 mm (0.08 in) long and wide. The fruit is a yellow/green capsule with 3 segments, 1 or 2 of which may be aborted. It is sparsely covered in minute hairs on the outside, the junctions of the segments are winged in the basal half (i.e. the end attached to the tree). The walls of the capsule are thick and fleshy, and on the inside they are orange and silky hairy. There is 1 seed per matured segment, brown, up to 26 mm × 22 mm (1.02 in × 0.87 in), and fully enclosed in an orange/red aril. Similar species Diploglottis alaticarpa can be distinguished from the similar species D. bracteata by its silvery pink new growth (versus silvery green for D. bracteata), the midvein of the leaf flush with the blade (vs. flush in a deep groove), and the winged fruit (vs. not winged). Phenology Flowering has been observed in October and November, while fruit have been seen in December and January.