Aspidosperma species

Scudeler, Ana Laura, Castello, Ana Carolina Devides, Pereira, Andreza Stephanie De Souza & Koch, Ingrid, 2018, A new species of Aspidosperma (Apocynaceae) from the Brazilian Cerrado, Phytotaxa 333 (1), pp. 117-123 : 121-122

Key of Aspidosperma species that occur in the Cerrado of Goiás and Tocantins states

1. Plants with red or reddish latex.........................................................................................................................................................2

- Plants with white latex ...................................................................................................................................................................... 3

2. Suberous branches; follicle 11 − 16 cm long, beige to light brown .. ................................................................. Aspidosperma nobile

- Branches not suberous; follicle 5.7 − 8.3 cm long, dark green to blackish .............................................. Aspidosperma melanocalyx

3. Buds not protected by cataphylls; follicles larger than 10 cm in length ........................................................................................... 4

- Buds protected by cataphylls; follicles up to 8 cm in length ............................................................................................................ 5

4. Suberous branches; leaves congested at the apex of the branches, blade usually obovate .. .............. Aspidosperma verbascifolium

- Branches not suberous; lax leaves, blade usually ovate ..................................................................... .. Aspidosperma macrocarpon

5. Sessile and decurrent leaves; follicles without evident midrib. ........................................................... .. Aspidosperma tomentosum

- Petiolate and non-decurrent leaves; follicles with evident midrib. .................................................................................................. 6

6. Leaves with cylindrical petiole, main vein prominent; flowers with pilose ovary; follicles with only one evident midrib................ .................................................................................................................................................................. Aspidosperma subincanum

- Leaves with petiole and main vein flattened; flowers with glabrous ovary; follicles with more than one parallel rib........................ ..................................................................................................................................................................... Aspidosperma rizzoanum