Synima, Radlk.

Callmander, Martin W., Ford, Andrew J. & Buerki, Sven, 2020, New combinations for two species in the genus Synima (Sapindaceae, Cupanieae) from Queensland (Australia), Candollea 75 (2), pp. 241-244 : 242-244

Key to the genus Synima

Adapted from REYNOLDS (1985b) and FORSTER (2006).

1. Leaflet margin uniformly serrate or serrulate; indumentum of crispate hairs; sarcotesta minute or absent ....... 2

1a. Leaflet margin entire or with occasional teeth towards apex; indumentum of straight hairs; sarcotesta larger ..... ..................................................................................... 3

2. Leaflets 3 – 6 pairs, regularly serrate, 2 – 5.5 cm long, 1.2–2.5 cm wide ............................................. S. serrata

2a. Leaflets 2 or 3 pairs, irregularly and apically serrate or serrulate, 5.5–12 cm long, 2.5–4.2 cm wide ..................... ................................................................ S. heterophylla

3. Branchlets 6–10 mm in diam.; inflorescences unbranched, or with only 1 to 3 side branches; cymules subsessile; sarcotesta covering only base of seed ........... S. macrophylla

3a. Branchlets less than 5 mm diameter; inflorescences paniculate; cymules pedunculate; sarcotesta covering lower third or nearly whole of seed ....................................... 4

4. Petals slightly keeled, with scattered to localised sparse indumentum externally, with uncrested scales; fruit obovoid, valve sutures white; leaflet midvein raised adaxially ......................................................... S. cordieri

4a. Petals not keeled, with dense indumentum externally with crested scales; fruit subglobose, valve sutures yellowish; leaflet midvein flush adaxially .................. S. reynoldsiae