list of figures - Terry Sunderland

Notes
O. wrightianus is distinct from all the other species in this genus by its slender nature
and relatively broad, sigmoid leaflets. This species was recently reduced to synonymy
by Tuley (1995), who suggested that this species represented a juvenile form of O.
mannii. However, this seems highly unlikely as the juvenile leaves of the members of
this genus are strongly bifid. More extensive field collections, particularly those of
fertile material, are needed to elaborate on this species.
Specimens examined
BENIN: Aufsess 430, Adjarra (06.32N:05.52E) sterile, December 6, 1988 (K!); NIGERIA: Barter
2220, Lagos (06.28N:03.20E) sterile, s.d. (K!); Jones & Onochie 17416, Sunmoge to Oshu road
(06.40N:04.18E) sterile, April 10, 1946 (K!); Miller 18, Lagos (06.28N:03.20E) sterile, s.d., (K!)
Imperfectly-known taxon
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O. djodu De Wild.
De Wild. in Bull. Jar. Bot. Brux. V: 146 (1916); Type: DR Congo, Nannan, 65 (BR!).
This species was described by de Wildeman from, by his own admission, very scanty
material. The majority of the collections held in BR are mostly of juvenile material
and the type specimen contains little more than a section of inflorescence and one
complete leaflet. Although de Wildeman’s original description states that this species
is characterised by the possession of 3 central pistillate flowers, this is hard to qualify
give the poor nature of the material. Nonetheless, it is certainly distinct from O.
macrospathus. Further collections in the central and coastal regions of DR Congo
would elaborate on this taxon further.
Indet. Oncocalamus
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NIGERIA: Commonwealth Imperial Institute, s.n., Benin district (05.59N:06.07E) seedling, March 21,
1906 (K!); Tuley 603, Ojo road (08.19N:04.14E) juvenile, May 4, 1964 (K!); CAMEROON: Harris
147