Bai Djobo
Missouri Botanical Garden
The biodiversity of Bai Djobo
Prepared by
Dr M.E. Leal
Field team:
D. Nguema, E. Mounoumoulossi, P. Bissiemou
Missouri Botanical Garden
Gabon 2007
Prologue
In September 2006 Missouri Botanical Garden was invited to assess the
biodiversity of the Bai Djobo for PPG on the Bateké Plateaux. Very little is
known of the forests on the Bataké Plateaux and this was the first biodiversity
assessment. Hopefully, more will follow because this assessment already had
some very surprising results.
Mig
i uele E
. L
ea
e l
a
February 2007
The biodiversity of Bai Djobo
The forest cover in Gabon and
The vegetation of Bateké NP and study site (outlined in red)
Congo (dark green) and the
and the geographical position of the Bai Djobo (encircled in
flanking savannahs (light
yellow).
brown) source Mayaux et al.
2003
The Bateké Plateaux
Bateké Plateaux in the south-east with its undulating
prairies is an exception to the rule in the heavily forested
Gabon. The Bateké Plateaux is part of the larger forest-
savannah mosaic which stretches all along the south flank of
the Central African rain forest. Typical for these savannah
which wedge into the forest is their superposition on sands
from the Tertiary (40-23Myrs ago).
Bateké Plateaux was then one large dune landscape, like
a large desert. But these sands do not necessarily have to be
associated with desert conditions in the past. Similar dune
landscapes exist within the Amazon. The sand which forms
the beaches along the Ogooué and Gabonese coast may very
Geological formations
well come from the Bateké Plateaux transported and
in the Bateké NP showing the
deposited over millions of years. Although it has not been
sands (light color) which extent
geologically proven, similar situation exist for other regions
further east.
outside central Africa.
▲
Mean rainfall over Gabon,
(gradient from blue-green-
orange= wet to dry) showing
that the SE is among the
wetter parts of the country.
Bateké NP (red line) showing a rainfall gradient over the
Plateaux from wet in the east to drier to the west.
The savannahs on the Plateaux and the forest restricted
along rivers and streams show that this is an arid
ecosystem, but which is not explained by the lack of
rainfall (mean annual). Rainfall over Gabon shows that
the Bateké Plateaux receives more rainfall than most of
northern interior of Gabon (see above) but which is
covered by rainforest whereas the Bateké Plateaux is not.
The dominance of the savannahs is explained by the
Bateké sands which have a low retention capacity and a
large dept. Therefore, the ground water table is beyond
The topography of Bateké NP and
the reach of most trees, accept along rivers and streams.
study site (outlined in red) and the
The only plant life-forms adapted to these dry conditions
geographical position of the Bai
are grasses and some shrubs.
Djobo (encircled in yellow).
One of the reasons why the savannahs dominate is also
because of burning which impedes forest colonization. The large Massif du Chaillu forest is
situated west of the Plateaux and it looks like it is slowly encroaching, comparing the national
maps from the 60’s and 70’s and recent maps (Mayaux et al. 2003). Forest colonization
typically occurs first along rivers and streams and slowly as patches of savannahs become
enclosed by gallery forest it may expand patch wise. In Lopé for instance these patches are
colonized by Okoumé (Aucoumea klaineana). Okoumé also occurs in on the Plateaux, but its
role is not known.
View on Djobo Bai on
the national map (see
left circled in red)
Bai Djobo
Bai Djobo is situated inside the eastern
section of the Massif du Chaillu forest
block close with the western edge of
Bateké savannah. Through the bai there
flows a stream to the south west. A first
preliminary observation is that the
herbs and grasses present in Bai Djobo
are also found in Langoué Bai in
Ivindo NP a few 100 km away.
The forest around the bai is full
grown undisturbed forest. The effect of
Schematic representation of the study site showing
topography determining the species
the location of the bai and the transects
composition of the forest is small as the
area around the bai is basically flat. In hilly or mountainous areas transects are places at
different altitudes along the slope and summit. With this setting general forest ecology
assumes a gradient in species composition from the drier edge of the forest in the west to the
wetter interior in the forest to the east. A second gradient is from the edge of the bai away
from the bai. By placing transects around the bai (Tr48, Tr50), close to the savannah
(Tr51,Tr52) and away from the savannah (Tr47, Tr49) it can be determined which
environmental factors are strongest and if the general assumptions are right altogether.
East of the Bai
West of the Bai
Cladogram showing the relationship (similarity) between the transects, close e.g. Tr49 and Tr47 or
distant e.g. Tr50 and Tr48.
Methods
The transects used to record species composition were 200 m long and 5 m wide. Every individual with a
diameter at breast height (dbh) of 5 cm and greater was recorded and identified or vouchered for identification in
the herbarium of Libreville. Often voucher specimens were without flowers or fruits in which case species were
identified only on sterile e.g. leaf characteristics. Such identifications are less confident and revered to as
morpho-species. Similarity between the transects was calculated by using the Sørensen index.
Sørensen index is S12/[0.5(S1+S2)] where S12 is the number of shared species between two transects and S1 is the
total number of species in transect 1 and similarly S2.
Tr47
Tr48
Tr49
Tr50
Tr51
Tr52
average
spp
49
56
51
46
53
52
51.2
n
121
129
129
113
115
110
119.5
alpha-diversity
30.6
37.6
31.1
28.9
38.1
38.5
34.2
endemism
13
23
17
10
20
24
17.8
%
26.5
41.1
33.3
21.7
37.7
46.2
34.4
Results
General characteristics
The total recorded species was 171 species. On average 52 species were present on a transect
and differences between transects were low. The highest score was 56 species on Tr48 and the
lowest 46 species on Tr47. Species restricted to a single transect (endemic) varied between 10
(21.7%) and 24 (46.2%). The number of trees on a transect was in general lower east of the
bai close to the savannah than west of the bai towards the interior, 113 and 126 on average,
respectively. Alpha-diversity varied between 28.9 and 38.5 with higher values for the
transects closer to the savannah.
Similarity
The cladogram (see above) shows a split in species composition between the transects east
and west of the bai. The transects east of the bai are more similar, and so the transects on the
west side. The two transects most dissimilar are close to the bai, i.e. Tr48 and Tr50. On the
west side the transects furthest away from the bai (Tr49, Tr47) show a higher similarity with
each other than with the transect close to the bai on the same side (Tr48). This is also
observed east side of the bai. Tr51 and Tr52 have a more similar species composition than
Tr50.
90
species richness
80
Other sites
70
60
Djobo Bai
50
40
30
20
10
0
Graph showing species richness in Djobo Bai (yellow bars) and
other sites in Gabon (blue bars).
120
100
Alpha diversity
80
Other sites
60
Djobo Bai
40
20
0
Graph showing Alpha diversity in Djobo Bai (yellow bars) and
other sites in Gabon (blue bars).
Discussion
The cladogram clearly shows that species composition on either side of the Jobo stream is
very different with the largest difference on opposite banks. This was not at all expected from
applying general forest ecology. In the Lopé forest savannah mosaic, for instance, the
riverside or riverine forest has a fairly constant species composition and only changes away
from the stream. The difference in species composition on both sides is clearly illustrated by
the distribution of Okoumé (Aucoumea klaineana) which was near absent the right side of the
stream close to the savannah and clearly present on the right side towards the interior.
The distribution of Okoumé gives insight in to the history of the forest around the bai.
Okoumé does not germinate under a closed canopy and in Lopé it is a typical savannah
colonizer. The forest close the savannah has been colonized some hundred years ago, judging
from the large size of the Okoumé trees. On the national map there is an enclosed patch of
savannah to the north. This patch extended much further south in the past judging from the
presence of old Okoumé trees in the forest close to the bai.
In terms of species richness and (alpha-) diversity the transects around Djobo Bai are
neither exceptionally rich nor poor. For the site it is interesting to observe that this site being
at the very edge of the Gabonese rain forest is still richer than other sites situated within the
forest block. Some of the poorer sites were situated in so-called Pleistocene forest refugia,
these were climatically stable forests during the last ice age. The relative high number of
Caesalpinioideae, like Bikinia pellegrinii (hight lighted in yellow in the appendix) is a strong
indication that some parts of this forest are old, because these species disperse very slowly.
This means that forest so-called micro refugia persisted on the Bateké Plateaux.
General collecting
In between doing the transects plants flowing and fruiting were
collected also to obtain more information on plant biodiversity in
general. Botanically the Plateaux is still fairly unknown, as was
confirmed recently with finds of a few rare grass species and 2 new
records collected by Gretchen Walters. The MBG field team
identified the collected specimens (see Appendix) among the
specimens collected is probably a new species of Calvoa and there is
the pygmy version of Rinorea batesii. For the former flowers need
to be collected to describe it properly.
The pygmy Rinorea batesii
The new Calvoa
Acknowledgements
Nous remercions le conservateur du Parc National d’Plateaux Bateké pour son soutien. A
monsieur Paul Telfer directeur technique du Parc National d’Plateaux Bateké de W.C.S pour
la disponibilité et l’accueil fraternel qu’il nous a accorde tout au long de notre séjour. Nous
remercions madame Liz Pearson Directrice P.P.G et Mousieur Paul Aczel, Coordinateur des
activités anti braconnage de Plateaux Bateké, et l’ensemble de son équipe pour toute la
disponibilité et l’accueil qu’ils nous ont apporté à notre égard Nous remercions également à
Ms Félix Asumu et madame Mireille pour l’appui important qui ils nous ont apporté (from the
fieldteam). This project was funded by Rufford Foundation, USAID’s Central African
Regional Program for the Environment in collaboration with the Wildlife Conservation
Society, the Herbier National du Gabon, IPHAMETRA, and CENAREST.
Appendix
Identifications of the plateaux Bateké specimens
D.Nguema et al.
number
species
Family
729 Memecylon myrianthum Gilg
Melastomataceae
Shrub
730 Memecylon sp
Melastomataceae
Shrub
731 indet
Rubiaceae
Undestory tree
732 indet
indet
Shrub
733 Garcinia sp
Guttiferaceae
Undestory tree
734 Hymenocardia cf acida Tul.
Euphorbiaceae
Undestory tree
735 Oxyanthus speciosus DC.
Rubiaceae
Shrub
736 Canthium sp
Rubiaceae
Shrub
737 Garcinia sp
Guttiferaceae
Undestory tree
738 Campylospermum cf reticulatum (P.Beauv.) Farron
Ochnaceae
Shrub
739 Heterotis sp
Melastomataceae
Herb
740 cf Aneilema sp
Commelinaceae
Herb
741 indet
indet
Liane
742 Coffea sp
Rubiaceae
Shrub
743 Thomandersia cf butayei De Wild.
Acanthaceae
Shrub
744 Hunteria cf oxyantha Omino
Apocynaceae
Shrub
745 Baphia sp
Leguminosae-Pap.
Undestory tree
746 Spathandra sp
Melastomataceae
Shrub
747 Garcinia sp
Guttiferaceae
Undestory tree
748 Psilanthus sp
Rubiaceae
Shrub
749 Tarenna sp
Rubiaceae
Shrub
750 Tricalysia sp
Rubiaceae
Shrub
751 Monanthotaxis sp
Annonaceae
Liane
752 Tricalysia sp
Rubiaceae
Shrub
753 Hymenocoleus cf hirsutus (Benth.) Robbr.
Rubiaceae
Herb
754 Justicia cf laxa T.Anders.
Acanthaceae
Herb
755 Sorindeia sp
Anacardiaceae
Shrub
756 Rinorea sp
Violaceae
Shrub
757 Calvoa sp (novo)
Melastomataceae
Herb
758 Angylocalyx sp
Leguminosae-Pap.
Undestory tree
759 Napoleonaea vogelii Hook. & Planch.
Lecythidaceae
Undestory tree
760 Campylospermum cf reticulatum (P.Beauv.) Farron
Ochnaceae
Shrub
761 Dicellandra cf barteri Hook.f.
Melastomataceae
Herb
762 Rinorea cf batesii Chipp
Violaceae
Shrub
763 Tricalysia sp
Rubiaceae
Undestory tree
764 indet
Rubiaceae
Shrub
765 Tricalysia cf pedunculosa (N.Hallé) Robbr.
Rubiaceae
Shrub
766 Memecylon sp
Melastomataceae
Shrub
767 Chassalia cf kolly (Schum.) Hepper
Rubiaceae
Shrub
768 Rinorea leiophylla M.Brandt
Violaceae
Shrub
769 Coffea sp
Rubiaceae
Shrub
770 indet
Rhizophoraceae
Shrub
771 indet
indet
Liane
772 Synsepalium sp
Sapotaceae
Shrub
773 Octolobus sp
Sterculiaceae
Shrub
774 Tricalysia sp
Rubiaceae
Undestory tree
775 Rinorea angustifolia (Thouars) Grey-Wilson
Violaceae
Shrub
776 Dracaena acutissima Hua
Dracaenaceae
Shrub
777 Oxyanthus formosus Hook.f. ex Planch.
Rubiaceae
Shrub
778 Agelae sp
Conaraceae
Liane
779 Leptaspis cochleata Thwaites
Gramineae
Herb
780 Paraphyadanthe flagelliflora Mildbr.
Flacourtiaceae
Undestory tree
781 Palisota cf thollonii Hua
Commelinaceae
Herb
782 Salacia sp
Celastraceae
Liane
783 Cynometra letestui (Pellegr.) J.Léonard
Leguminosae-Caes.
Undestory tree
784 indet
indet
Liane
785 indet
Annonaceae
Liane
786 Senandrium cf gabonicum (R.Benoist) Vollesen
Acanthaceae
Shrub
787 Mareya micrantha (Benth.) Müll.Arg.
Euphorbiaceae
Shrub
788 Synsepalium sp
Sapotaceae
Shrub
789 Bikinia grisea Wieringa
Leguminosae-Caes. Sub canopy tree
790 Lasiodiscus fasciculiflorus Engl.
Rhamnaceae
Shrub
791 Schefflerodendron sp
Leguminosae-Pap.
Undestory tree
792 Monodora sp
Annonaceae
Shrub
793 Warneckea reygaerti (De Wild.) Jacq.-Fél.
Melastomataceae
Shrub
794 Culcasia sp
Araceae
Herb
795 Palisota cf hirsuta (Thunb.) K.Schum.
Commelinaceae
Herb
796 Chytranthus sp
Sapindaceae
Undestory tree
797 Sorindeia sp
Anacardiaceae
Shrub
798 indet
Rubiaceae
Shrub
799 Ochna sp
Ochnaceae
Shrub
800 Campylospermum cf reticulatum (P.Beauv.) Farron
Ochnaceae
Shrub
801 Pancovia sp
Sapindacaeae
Shrub
802 Campylospermum laeve (De Wild. & T.Durand) Farron Ochnaceae
Shrub
803 Warneckea wildeana Jacq.-Fél.
Melastomataceae
Shrub
804 Grewia sp
Tiliaceae
Shrub
805 Venonia sp
Compositae
Herb
806 Rourea cf coccinea (Thonn. ex Schum.) Benth.
Connaraceae
Liane
807 Sapium cornutum Pax
Euphorbiaceae
Shrub
808 Guarea cf glomerulata Harms
Meliaceae
Shrub
809 indet
Guttiferaceae
Shrub
810 indet
indet
Herb
811 indet
Gramineae
Herb
812 Dialium sp
leguminosae-Caes.
Undestory tree
813 Syziguim sp
Myrtaceae
Undestory tree
814 indet
indet
Liane
815 Cnestis sp
Conaraceae
Liane
816 Allophylus cf africanus P.Beauv.
Sapindaceae
Shrub
817 Laccodiscus cf ferrugineus (Baker) Radlk.
Sapindacaeae
Shrub
818 Maprounea sp
Euphorbiaceae
Undestory tree
819 Phyllanthus sp
Euphorbiaceae
Shrub
820 Oncoba welwitschii Oliv.
Flacourtiaceae
Undestory tree
821 indet
Leguminosae-Pap.
Herb
822 Xyris cf congensis Büttner
Xyridaceae
Herb
823 Cyperus sp
Cyperaceae
Herb
824 Hypolytrum cf purpurascens Cherm.
Cyperaceae
Herb
825 Fimbristylis cf hispidula (Vahl) Kunth
Cyperaceae
Herb
826 Trichopteryx marungensis Chiov.
Gramineae
Herb
827 indet
Gramineae
Herb
828 Tristemma cf littorale Benth.
Melastomataceae
Herb
829 Dissotis sp
Melastomataceae
Herb
830 Dichaetanthera cf strigosa (Cogn.) Jacq.-Fél.
Melastomataceae
Herb
831 Eriocoelum cf petiolare Radlk.
Sapindacaeae
Shrub
832 Dacryodes le-testui (Pellegr.) Lam
Burceraceae
Understory tree
833 Impatiens cf irvingii Hook.f. ex Oliv.
Balsaminaceae
Herb
834 Baphia laurifolia Baill.
Leguminosae-Pap.
Liane
835 Cogniauxia cf podolaena Baill.
Cucurbitaceae
Liane
836 Ruthalicia sp
Cucurbitaceae
Liane
837 Antidesma sp
Euphorbiaceae
Undestory tree
838 Spathandra cf blakeoides (G.Don) Jacq.-Fél.
Melastomataceae
Undestory tree
839 impatiens sp
Balsaminaceae
Herb
840 Rhabdophyllum cf affine (Hook.f.) Tiegh.
Ochnaceae
Undestory tree
841 Vismia rubescens Oliv.
Guttiferaceae
Liane
842 indet
Sapindacaeae
Undestory tree
843 Dalbergia sp
Leguminosae-Pap.
Liane
844 indet
Leguminosae-Pap.
Liane
845 Berlinia sp
leguminosae-Caes.
Sub canopy tree
846 Plagiostyles africana (Müll.Arg.) Prain
Euphorbiaceae
Sub canopy tree
847 Klainedoxa gabonensis Pierre ex Engl.
Irvingiaceae
Canopy tree
848 Milletia sp
Leguminosae-Pap.
Liane
849 Dacryodes igaganga Aubrév. & Pellegr.
Burseraceae
Undestory tree
850 Milletia sp
Leguminosae-Pap.
Sub canopy tree
851 Duvigneaudia sp
Euphorbiaceae
Undestory tree
852 Ochna multiflora DC.
Ochnaceae
Undestory tree
853 Baphia laurifolia Baill.
Leguminosae-Pap.
Liane
854 Milletia sp
Leguminosae-Pap.
Liane
855 Dalbergia cf saxatilis Hook.f.
Leguminosae-Pap.
Liane
856 Sorindeia sp
Anacardiaceae
Shrub
857 Pentadesma grandifolia Baker f.
Guttiferaceae
Canopy tree
858
Sorindeia sp
Anacardiaceae
Shrub
Appendix 1 common species
Tr47
Tr48
Tr49
Tr50
Tr51 Tr52
species
n
n
n
n
n
n
Greenwayodendron suaveolens (Engl. & Diels) Verdc
3
3
5
1
4
3
Dacryodes macrophylla (Oliv.) Laur.
2
4
7
6
1
1
Rhabdophyllum 47d
5
1
2
3
1
Diospyros iturensis (Gürke) Letouzey & F.White
4
4
1
3
1
Aucoumea klaineana Pierre
7
4
3
2
Garcinia mannii Oliv.
3
4
4
2
Syzygium cf congolense Verm. & Amshoff
3
4
3
2
Dialium cf corbisieri Staner
3
3
1
2
Santiria trimera (Oliv.) Aubrév.
5
6
7
2
1
Pentaclethra eetveldeana De Wild. & T.Durand
5
4
2
3
1
Dialium pachyphyllum Harms
5
2
2
1
2
Erismadelphus exsul Mildbr. cf var. platyphyllus Keay & Stafleu
5
2
2
Baphia leptostemma Baill.
5
1
4
3
5
Microdesmis sp Hook.f. ex Hook
5
2
6
Oncoba cf mannii Oliv.
4
5
Pausinystalia macroceras 47b (K.Schum.) Pierre ex Beille
3
1
2
2
Berlinia auriculata Benth.
3
1
Allanblackia sp Oliv. ex Benth.
3
5
1
Greenwayodendron s. var gab. (Pellegr. ex Le Thomas) Verdc.
2
8
9
2
Dialium guineense Willd.
2
5
9
4
6
Chytranthus sp Hook.f.
2
2
2
1
Xylopia le-testui Pellegr. var. longepilosa Le Thomas
2
1
1
1
1
Thomandersia cf hensii De Wild. & T.Durand
2
3
Anonidium mannii (Oliv.) Engl. & Diels
2
1
Dracaena cf laxissima Engl.
1
3
4
1
1
Placodiscus cf glandulosus Radlk.
1
3
1
Trilepisium madagascariense Thouars ex DC.
1
1
5
2
Aphanocalyx microphyllus (Harms) Wieringa
1
1
Diospyros sp L.
1
4
1
Maesobotrya floribunda Benth.
1
2
Dichostemma glaucescens Pierre
1
1
2
10
1
Drypetes sp Vahl
1
1
Garcinia sp
1
3
Appendix 1 (continued) common species Tr47 Tr48 Tr49 Tr50 Tr51 Tr52
species
n
n
n
n
n
n
Coelocaryon preussii Warb
1
1
Cola sp Schott & Endl.
5
2
Sapindaceae 48a
4
1
Plagiostyles africana (Müll.Arg.) Prain
3
3
1
Harungana madagascariensis Lam. ex Poir.
2
2
Diospyros conocarpa Gürke & K.Schum.
1
1
1
Funtumia sp Stapf
1
1
Beilschmiedia cf klainei Robyns & R.Wilczek
1
1
Didelotia africana Baill.
1
2
Isolona hexaloba (Pierre) Engl. & Diels
1
1
1
1
Oncoba 47d
1
1
4
Strombosia pustulata Oliv.
1
3
Tricalysia sp
1
1
Chytranthus edulis Pierre
2
2
2
4
Oddoniodendron micranthum (Harms) Baker f.
11
3
Diospyros cf bipindensis Gürke
8
1
Plagiosiphon emarginatus (Hutch. & Dalziel) J. Léonard
6
2
5
Rutaceae 49c
5
1
Sapindaceae 49b
4
6
4
Synsepalum cf longecuneatum De Wild.
4
4
2
Staudtia stipitata Warb.
3
2
7
Tessmannia sp Harms
2
Strombosiopsis tetrandra Engl.
1
2
1
Carapa cf parviflora
1
2
Cola digitata Mast.
1
2
Bikinia pellegrinii (A.Chev.) Wieringa
1
1
Gilbertiodendron cf stipulaceum (Benth.) J.Léonard
1
6
Tessmannia lescrauwaetii (De Wild.) Harms
1
2
Trichoscypha 51c
1
1
Beilschmiedia sp Nees
2
1
Appendix 2
Tr47
Tr48
species
n
n
Dialium cf angolense Welw. ex Oliv.
5
Spp 47b
5
Dacryodes klaineana (Pierre) H.J.Lam
2
Garcinia smeathmannii (Planch. & Triana) Oliv.
2
Uapaca sp Baill.
2
Baphia cf leptobotrys Harms
1
Cola acuminata (P.Beauv.) Schott & Endl.
1
Cola altissima Engl.
1
Dacryodes 47b2
1
Dacryodes cf igaganga Aubrév. & Pellegr.
1
Grewia cf coriacea Mast.
1
Nauclea pobeguinii (Hua ex Pell.) Merr. ex Petit
1
Pauridiantha cf dewevrei (De Wild. & T.Durand) Bremek.
1
Aneulophus africanus Benth.
7
Diospyros 48a
5
Hallea cf ledermannii (K.Krause) Verdc.
5
Diospyros cf zenkeri (Gürke) F.White
3
Berlinia cf auriculata Benth.
2
Oxyanthus cf speciosus DC.
2
Anisophyllea cf polyneura J.Floret
1
Araliopsis sp Engl.
1
Baphia sp Afzel. ex Lodd.
1
Carapa sp
1
Dacryodes yangambensis
1
Dialium tessmannii Harms
1
Drypetes 48d
1
Maranthes cf glabra (Oliv.) Prance
1
Microdesmis 48b
1
Newtonia leucocarpa (Harms) Gilbert & Boutique
1
Parkia bicolor A.Chev.
1
Pavetta cf corymbosa (DC.) F.M.Williams
1
Sorindeia cf winkleri Engl
1
Swartzia fistuloides Harms
1
Tessmannia lescrauwaetii (De Wild.) Harms
1
Uvariastrum pynaertii De Wild.
1
Xylopia 48c
1
Tr49
Tr50
species
n
n
Dialium cf polyanthum Harms
3
Dialium sp L.
3
Duvigneaudia inopinata (Prain) J.Léonard
3
Rutaceae 48c
3
Calpocalyx dinklagei (Taub.) Harms
1
Carapa cf angustifolia Harms.
1
Ceaesalpiniaceae sp
1
Discoglypremna caloneura (Pax) Prain
1
Irvingia gabonensis (Aubry-Lecomte ex O'Rorke) Baill.
1
Mareya sp Baill.
1
Millettia laurentii De Wild.
1
Pentaclethra macrophylla Benth.
1
Rubiaceae 49b
1
Tessmannia africana Harms
1
Trichilia gilgiana Harms
1
Warneckea cauliflora Jacq.-Fél.
1
Xylopia 49a
1
Sapindaceae 49a
7
Tessmannia sp Harms
2
Berlinia 49a
1
Hallea 49a
1
Napoleonaea cf vogelii Hook. & Planch.
1
Ongokea gore (Hua) Pierre
1
Pleiocarpa cf bicarpellata Stapf
1
Polyceratocarpus parviflorus (Baker f.) Chesq.
1
Rhabdophyllum 45d
1
Appendix 2 (continued)
Tr51
Tr52
species
n
n
Hymenostegia pellegrinii (A.Chev.) J.Léonard
7
Oddoniodendron 50b
4
Gambeya cf subnuda (Baker) Pierre
2
Lecomtedoxa sp
2
Piptostigma cf mortehani De Wild.
2
Rhabdophyllum cf arnoldianum (De Wild. & T.Durand) Tiegh.
2
Angylocalyx pynaertii De Wild.
1
Baphia obanensis Baker f.
1
Barteria fistulosa Mast
1
Chytranthus cf mortehani (De Wild.) De Vold. ex Hauman
1
Heisteria parvifolia Sm.
1
Hymenostegia pellegrinii (A.Chev.) J.Léonard
1
Memecylon cf collinum Jacq.-Fél.
1
Rabdophyllum 47d
1
Sizyguim 51c
1
Strephonema cf sericeum Hook.f
1
Symphonia globulifera L.f.
1
Thomandersia 51a
1
Vangueriopsis rubiginosa Robyns
1
Warneckea cf sapinii (De Wild.) Jacq.-Fél.
1
Cynometra cf sanagaensis Aubrév.
10
Craibia cf atlantica Dunn
8
Ceaesalpiniaceae 52a2
3
Hymenostegia pellegrinii (A.Chev.) J.Léonard
3
Synsepalum cf le-testui Aubrév. & Pellegr
3
Hymenostegia pellegrinii (A.Chev.) J.Léonard
2
Prioria oxyphylla (Harms) Breteler
2
Baphia cf laurifolia Baill.
1
CF Pavetta sp
1
Cleistopholis glauca Pierre ex Engl. & Diels
1
Diospyros barteri Hiern.
1
Diospyros cf boala De Wild.
1
Diospyros hoyleana F.White
1
Drypetes 52c
1
Drypetes gilgiana (Pax) Pax & K.Hoffm.
1
Erythrophleum ivorense A.Chev.
1
Maprounea africana Müll.Arg.
1
Plagiosiphon 52b
1
Polyceratocarpus cf parviflorus (Baker f.) Chesq
1
Rhabdophyllum 51a
1
Rinorea angustifolia (Thouars) Baill. subsp. ardisiiflora (Welw. ex Oliv.) Grey-Wilson
1
Spp 52b
1
Tricalysia soyauxii K.Schum.
1
Xylopia 52d
1
