Phytocrene

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 : 60

Key to the genus Phytocrene

1. Pits broad, concave ........................................................................................................................... 2 – Pits narrow ........................................................................................................................................ 3

2. Endocarp ca 14 mm in length, endocarp wall thin (114–154 µm thick), pits with a median freely ending ridge or central dimple................................................................................. P. anomala Merr.

– Endocarp ca 26 mm in length, endocarp wall thick (542–591 µm thick), pits without a freely ending ridge .......................................................................................................................... P. oblonga Wall.

3. Endocarp clearly ridged ........................................................................................... P. hirsuta Blume – Endocarp not ridged .......................................................................................................................... 4

4. Pits 60–65 on each face .......................................................................................... P. bracteata Wall. – Pits>90 on each face ........................................................................................................................ 5

5. Endocarp 40–60 mm in length, oblong ............................................. P. macrophylla (Blume) Blume – Endocarp <40 mm in length, not oblong .......................................................................................... 6 6. Endocarp obovoid, 125–130 pits per face ........................................................... P. borneensis Becc. – Endocarp ovoid, 168–178 pits per face .................................................................... P. palmata Wall .