Tree to 7 m high, glabrous except flowers. Leaf rachis 2.5–14 cm long; leaflets 2 or 3 pairs, rarely 1, broadly elliptic or ovate-elliptic, acute, shortly acuminate or obtuse, oblique at base, 6–12.5 cm long, 2.5–6 cm wide, shining above; lateral veins 5–9 pairs, looping away from margins; petiolules long-pulvinate, 0.8–1.8 cm long; petiole 3–7.5 cm long. Panicles to 26 cm long, openly branched; pedicels 6–9 mm long. Calyx lobes 3–6 mm long, puberulent. Petals 4–5 mm long, with 2 glandular hairy scales, puberulent towards base. Disc glabrous. Filaments 4 mm long. Fruit stipitate, broadly obcordate or obovoid, keeled towards base, 1.2–1.4 cm long, 2–3.2 cm diam.; 2- or 3-lobed, yellow with red flush; valves thinly coriaceous.
Rhysotoechia mortoniana is similar to R. flavescens in its shiny leaves but differs in its fewer lateral veins and open reticulation. The petals also have scales.
Qld: Danbulla via Kairi, Sept. 1948, J. Byrne (BRI); between Kuranda and Barron Falls, L.S. Smith 4273 (BRI); Koolmoon Creek, near Ravenshoe, L.S. Smith 10467 (BRI).
S.T. Reynolds, Austrobaileya 2(1): 43, fig. 3G–H (1984); S.T. Reynolds, Flora of Australia 25: 57, fig. 12K–M (1985), see Gallery.
Cooper, W. & Cooper, W.T. (2004). Fruits of the Australian Tropical Rainforest. (Nokomis Editions: Melbourne).
Reynolds, S.T. (1984). Notes on Sapindaceae, III. Austrobaileya 2(1): 29–64; Rhysotoechia pp. 41–44.
Reynolds, S.T. (1985). Rhysotoechia, in George, A.S. (ed.), Flora of Australia 25: 63–65. (Australian Government Publishing Service: Canberra).
Reynolds, S.T. (1991). New species and changes in Sapindaceae from Queensland. Austrobaileya 3(3): 489–501.
Author - S.T. Reynolds
Contributor - John R. Busby (ed. March 2020); P.G. Kodela (ed. September 2020)
Editor -
Acknowledgements -
Cite this profile as: S.T. Reynolds. Rhysotoechia mortoniana, in (ed.), Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water: Canberra. https://profiles.ala.org.au/opus/foa/profile/Rhysotoechia%20mortoniana [Date Accessed: 13 March 2025]