Iodes, Blume, 1825

Rio, Cédric Del, Stull, Gregory W. & Franceschi, Dario De, 2020, Survey of the fruits and endocarps of Icacinaceae (Lamiids, Icacinales), European Journal of Taxonomy 645, pp. 1-130 : 31-32

Key to the genus Iodes

1. Endocarp with pores or horn-like protrusions at the apex ................................................................ 2 – Endocarp lacking pores or horn-like protrusions .............................................................................. 3

2. Endocarp with pores ......................................................................................................................... 4 – Endocarp with horn-like protrusions ................................................................................................ 5

3. Outer surface of the endocarp smooth ..................................................... I. seguinii (H.Lév.) Rehder – Outer surface of the endocarp ridged ................................................................................................ 6

4. Endocarp globose in lateral view, endocarp length <12 mm ............................... I. perrieri Sleumer – Endocarp elliptical in lateral view, endocarp length> 30 mm ..................................... I. yatesii Merr. 5. Endocarp base cleft on one side ........................................................................................................ 7 – Endocarp base symmetrical .............................................................................................................. 8

6. Pattern of ridges not reticulate ................................................................................... I. liberica Stapf – Pattern of ridges reticulate ................................................................................................................ 9

7. Pattern of ridges delimiting a few areoles, endocarp length> 12.6 mm ..................... I. ovalis Blume – Pattern of ridges diffuse, endocarp length <12.6 mm .................................................................... 10

8. Endocarp ca 32 mm in length ............................................................................. I. balansae Gagnep. – Endocarp ca 15 mm in length ................................................ I. scandens (Becc.) Utteridge & Byng

9. Fruit pilose, endocarp wall 222–245 µm thick excluding ridges ......... I. seretii (De Wild.) Boutique – Fruit glabrous, puberulent, endocarp wall <200 µm thick excluding ridges ..................................11

10. Endocarp ornamentation rugose, secondary ridges absent ..................................... I. cirrhosa Turcz. – Rugose ornamentation absent, secondary ridges present ............................... I. philippinensis Merr.

11. Areoles few in number, ca 1 to 3 .................................................................... I. kamerunensis Engl. – Areoles numerous (>13) ................................................................................................................. 12

12. Fruit glabrous, endocarp with numerous areoles, ridges faintly distinct, freely ending ridgelets absent, endocarp length <8 mm ......................................................................................................... ................................................................................................................... I. madagascariensis Baill.

– Fruit puberulent, endocarp with (at most) 25 areoles, freely ending ridgelets present, ridges distinct, endocarp length> 10 mm ................................................................................................................ 13

13. Areoles 13–15 on each face, surface rugose ......................................................... I. klaineana Pierre – Areoles 21–25 on each face, surface not rugose ....................................... I. africana Welw. ex Oliv.