key, Radlk.

Buerki, Sven, Munzinger, Jérôme, Lowry Ii, Porter P. & Callmander, Martin W., 2020, Two new genera of Sapindaceae (Cupanieae) from the southern Pacific: Lepidocupania and Neoarytera, Candollea 75 (2), pp. 269-284 : 273

A key to the newly circumscribed Arytera , Cupaniopsis and allied genera

The following key is adapted from REYNOLDS (1985b).

1. Calyx lobes free (sometimes sepals basally united), orbicular, elliptic or obovate, concave .................................... 2

1a. Calyx shortly cupular, the lobes toothed or partite, usually ovate ............................................................................ 4

2. Scales absent from petals ............................ Lepiderema

2a. Scales present on petals ............................................... 3

3. Scales present on vegetative and fertile organs ............... ............................................................... Lepidocupania

3a. Scales absent from vegetative and fertile organs ............. ................................................................... Cupaniopsis

4. Petal scales crested ............................................. Synima

4a. Petal scales not crested ................................................ 5

5. Petal scales adnate to the petal margin or free from the petals; central axis of fruit not thickened .......... Arytera

5a. Petal scales comprising minute enations; central axis of fruit distinctly thickened ............................. Neoarytera