Mackinlaya confusa Hemsl.

Hemsley, W.B. (1909) Kew Bulletin : 259. Type: Queensland, Dunk Is., 5 June 1848, J. McGillivray; holo: K.

Usually flowers and fruits as a slender single-stemmed shrub about 1-3 m tall.

Compound leaf petiole much longer than the leaflet stalks. Leaflet stalks variable in length even on the one compound leaf. Leaflet blades about 10-21 x 5-10 cm.

Flowers borne in cymes or umbels which are arranged in umbels which are also arranged in umbels. Male and hermaphrodite flowers produced on each plant. Flowers about 2.5 mm diam. Ovary laterally compressed and bilobed. Styles short.

Fruit surface glaucous or blue-grey. Fruits borne in cymes or umbels which are arranged in umbels which are also arranged in umbels. Fruit laterally compressed and usually +/- 2-lobed, wider than long, about 10 x 15 mm, usually with the style and calyx remnants at the apex. Testa finely reticulate or minutely tuberculate. Embryo very small (about 0.6-0.8 mm long). Cotyledons about as wide as the radicle.

Cotyledons about 17-25 x 11-20 mm. First pair of leaves alternate, lanceolate, margins toothed. Petiole bases clasping the stem. At the tenth leaf stage: leaves may be either simple or trifoliolate, leaf or leaflet blades elliptic, apex apiculate, base attenuate. Margin coarsely toothed with 1-3 teeth on each side. Base of the petiole +/- winged and clasping the stem. Stipules fused to the petiole. Crushed leaves emit an odour like that of celery. Seed germination time 35 to 143 days.

Endemic to Queensland, occurs in CYP and NEQ. Altitudinal range from near sea level to 1000 m. Grows as an understory shrub in and on the margins of a variety of different types of well developed rain forest.