Icacinaceae

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 : 9-10

publication ID

https://doi.org/ 10.5852/ejt.2020.645

DOI

https://doi.org/10.5281/zenodo.3848622

persistent identifier

https://treatment.plazi.org/id/B7038788-FF90-C355-828F-FBC3FAEB010B

treatment provided by

Valdenar

scientific name

Icacinaceae
status

 

Key to genera of Icacinaceae View in CoL s.str.

1. Endocarp wall homogeneous comprised of isodiametric cells .............................. Cassinopsis Sond. View in CoL – Endocarp wall not homogeneous or cells not exclusively isodiametric ........................................... 2

2. Hairs present on the locule surface ................................................................................................... 3 – Hairs absent from the locule surface ................................................................................................ 4

3. Endocarp width ca 40 mm, endocarp wall more than 700 µm thick ........................ Lavigeria Pierre View in CoL – Endocarp width ca 13 mm, endocarp wall less than 400 µm thick ................................ Leretia Vell. View in CoL

4. Locule surface papillate .................................................................................................................... 5 – Locule surface not papillate .............................................................................................................. 6

5. Outer endocarp surface pitted ........................................................................................................... 7 – Outer endocarp surface not pitted ..................................................................................................... 8

6. Hairs-like unit present on the endocarp surface ................................................. Pleurisanthes Baill. View in CoL – Hairs-like unit absent from the endocarp surface ............................................................................. 9

7. Tubercles bullate ....................................................................................................... Miquelia Meisn. View in CoL – Tubercles spiny, cylindrical, peg-shaped or elongate-flattened ........................ Pyrenacantha Hook. View in CoL

8. Endocarp primary vascular bundle embedded within endocarp wall ............................. Iodes Blume View in CoL – Endocarp primary vascular bundle outside endocarp wall or in a channel .................................... 10

9. Outer endocarp surface pitted ..........................................................................................................11 – Outer endocarp surface not pitted ................................................................................................... 12 10. Outer endocarp surface completely smooth ................................................................... Iodes Blume View in CoL – Outer endocarp surface ridged or rugose, irregular ........................................................................ 13

11. Pits within shallow mounds slightly protruding inside the locule .......................... Phytocrene Wall. View in CoL – Pits within tubercles protruding inside the locule ........................................................................... 14

12. Endocarp thickness> 12 mm ..................................................................................... Icacina A.Juss. View in CoL – Endocarp thickness <10 mm .......................................................................................................... 15

13. Endocarp length ca 12 mm .................................................................. Hosiea Hemsl. & E.H.Wilson View in CoL – Endocarp length> 15 mm ............................................................................................................... 16

14. Tubercles bullate ................................................................................................. Stachyanthus Engl. View in CoL – Tubercles spiny, cylindrical, peg-shaped or elongate-flattened ........................ Pyrenacantha Hook. View in CoL

15. Endocarp ridged and reticulate ....................................................................................................... 17 – Endocarp rugose, irregular .............................................................................................................. 18

16. Endocarp almost smooth, irregularly rugose but without clear protuberant structures ...................... .................................................................................................................. Sarcostigma Wight & Arn. View in CoL – Endocarp rugose with clear protuberant structures or ridged ......................................................... 19

17. Endocarp oblong .................................................................................... Alsodeiopsis Oliv. in Benth. View in CoL – Endocarp elliptical .......................................................................................................................... 20

18. Endocarp apex with prominent bulge or pores ............................................................................... 21 – Endocarp apex without ornamentation .......................................................................... Mappia Jacq. View in CoL

19. Endocarp rugose, irregular ....................................................................... Mappianthus Hand. -Mazz. – Endocarp ridged with a reticulate or diffuse ornamentation ................................ Rhyticaryum Becc.

20. Endocarp length ca 9 mm, 4–5 areoles formed by ridges on each face .............................................. ........................................................................................................... Natsiatum Buch. View in CoL -Ham. ex Arn.

– Endocarp length> 11 mm, 20–30 areoles formed by ridges on each face .......................................... .................................................................................................... Vadensea Jongkind & O.Lachenaud View in CoL

21. Endocarp with subapical pores .................................................. Vadensea Jongkind & O.Lachenaud View in CoL – Endocarp with apical bulge ............................................................................................................ 22

22. Ornamentation bullate, occuring in Madagascar............................. Desmostachys Planch. ex Miers View in CoL – Ornamentation more granular, occuring in Asia ............................................... Nothapodytes Blume

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