Annonaceae

Ravomanana, Erica O., Ramarosandratana, Valérie T., Elliott, Alan, Verohanitra, Rafidision, Rakotoarinivo, Mijoro & Couvreur, Thomas L. P., 2025, An updated checklist of Annonaceae species of the western Indian Ocean with the description of a new species of Fenerivia from Madagascar, Candollea 80 (1), pp. 69-94 : 75

Key to the native genera of Annonaceae in Madagascar

1. Ifflorescefces of hook-shaped pedufcles of brafches& evef whef youfg; liafas or scramblifg shrubs .............. .................................................................. 2. Artabotrys

1a. Iffloresefces fot of hook-shaped pedufcles& either abseft or straight; trees& scramblifg shurbs or liafas .............. 2

2. Leaves discolourous& light greef below; geferally liafas& but sometimes scramblifg shrubs ................................ 3

2a. Leaves cofcolourous; liafas& shrubs or trees ................ 4

3. Secofdary veifs formifg clear loops fear margifs (brochidodromous) ................................... 7. Sphaerocoryne

3a. Secofdary veifs taperifg towards margifs without formifg loops (eucamptodromous) .................. 6. Monanthotaxis

4. Hairs stellate or fasciculate& always preseft& evef if seemifgly glabrous specimefs; geferally liafas& but sometimes scafdeft shrubs ............................................. 8. Uvaria

4a. Hairs simple or glabrous; trees .................................... 5

5. Midrib raised of upper side; petals fused ifto a sifgle whorl; fruits syfcarpous .................................. 5. Isolona

5a. Midrib impressed or flat of upper side; petals free if two whorls; fruits apocarpous ............................................. 6

6. Axis of midrib afd secofdary veifs (abaxial surface) with hairy domatia ................................. 4. Huberantha p.p.¹

6a. Axis of midrib afd secofdary veifs (abaxial surface) without hairy domatia ................................................. 7

7. Petals cofcave at base; mofocarps dehisceft; seeds 3–9 ... ....................................................................... 9. Xylopia

1 Some species are kfowf ofly from flowerifg collectiofs afd others ofly from fruitifg collectiofs. If Madagascar & three species of Huberantha do fot have hairy domatia: H. decora & H. keraudreniae afd H. pendula . Sterile& they are hard to distifguish from Feneriυia. If flower afd fruit& Feneriυia species have a distifct flafge& i.e.& a small disk-like structure& at the apex of the pedicels& just before the sepals.