Dm. Johnson et Na. Murray, SYNOPSIS OF THE TRIBE BOCAGEEAE (ANNONACEAE), WITH REVISIONS OF CARDIOPETALUM, FROESIODENDRON, TRIGYNAEA, BOCAGEA, AND HORNSCHUCHIA, Brittonia, 47(3), 1995, pp. 248-319
The tribal name Bocageeae Endlicher is reestablished and the tribe is
circumscribed on the basis of solitary internodal ebracteate pedicels
that are articulated at the base, and pollen shed in polyads of eight
or more grains. Septate anther locules, large pollen size, and seed ap
pendages are prevalent in the tribe. Intectate pollen with free-standi
ng columellae, rare in Annonaceae, occurs not only in the genus Trigyn
aea but also in some species of Bocagea and Hornschuchia. As defined h
ere, the Bocageeae include seven neotropical genera: Cymbopetalum, Por
celia, Bocagea, Cardiopetalum, Froesiodendron, Hornschuchia, and Trigy
naea. The latter five genera are revised and the treatments include te
n new species: Cardiopetalum plicatum, Froesiodendron urceocalyx, Horn
schuchia lianarum, H. santosii, H. leptandra, Tripynaea cinnamomea, T.
lanceipetala, T. triplinervis, T. lagaropoda, and T. axilliflora, all
from tropical South America. A new combination, Froesiodendron longic
uspe, changes the rank of that taxon from subspecies to species. Cardi
opetalum surinamense is removed from Froesiodendron on and reassigned
to Cardiopetalum on the basis of its connate petals, dehiscent monocar
ps, and seeds with bilobed arils, A cladogram provides an explicit hyp
othesis of intergeneric relationships in the tribe. The new combinatio
n Onychopetalum periquino, based on Trigynaea periquino, is made.