NIGERIA * 197 
Lecuminos: Tetrapleura Thonningii, Piptadenia Africana, Ery- 
throphlaum Guineense, Cynometra Vogelii, Pterocarpus esculentus, 
Dialium Guineense, Millettia sp. near M. Sanagana and other species 
of Millettia, Cordyla Africana, Berlinia Heudelotit, Cesalpinia 
Bonducella, Lonchocarpus cyanescens, Baphia pubescens and B. nitida. 
Rosacea: Parinarium subcordatum. 
CoMBRETACE#: several species of scarlet-flowered Combretum of 
climbing habit—C. racemosum, C. constrictum, etc. 
Myrtacez: Napoleona Vogelii. 
Rupiracez: Morinda citrifolia, Cuviera acutiflora, Canthium 
Vanguerioides, Ixora radiata, Uncaria Africana, Oxryanthus unilocularis, 
some species of Mussenda, etc. 
RHIZOPHORACEE: Weithea Africana. 
SapoTtacez: Mimusops sp. 
ApocynackE#: Voacanga obtusa and V. Africana, Landolphia 
Owariensis and other spp., Carpodinus hirsuta, Plenisceras Barteri 
and the tree Wadda, Rauwolfia sp. near R. Welwitschit. 
Locantacez: Anthocleista Vogelit. 
CONVOLVULACEE : Calonyction speciosum, Merremia umbellata, etc. 
Bienontacez: Spathodea campanulata. 
ACANTHACEZ : Acanthus montanus, Asystasia Coromandeliana, ete. 
VERBENACEE : Vitex chrysocarpa and V. Angolensis. 
PIPERACEE : Piper umbellatum and Piperomia pellucida. 
GEsNERACEE: Streptocarpus nobilis. 
EvprHorBiace®: Alchornea cordate, Mallotus oppositifolius. 
Moracez: Chlorophora excelsa, Ficus Vogeliti and other spp., 
Myrianthus serratus. 
Uitmacez : Trema Guineensis. 
AMPELIDER : Leea Guineensis. 
PoLyGALAcEz#: the cultivated Polygala butyracea and the dwarf 
species, P. Clarkeana. 
BaLANOPHORACEZ: the root-parasite Thonningia sanguinea. 
Amongst Monocotyledonous Orders the Scitaminee are more in 
evidence, Palisota thyrsiflora (Commelinacee) appears (along with a 
Begonia on moist rocks—B. rostrata), and the water-loving Aroid, 
Cyrtosperma Senegalense. 
The Oil Palm, Eleis Guineensis, becomes locally common, ferns 
become epiphytic, and the Elk’s-horn fern, Platycerium Aithiopicum, 
appears. 
Northwards the savannah forests, with plenty of broad-leaved trees 
and shrubs, or the open park-like formations with surface well covered 
with grasses and herbs, give way in some places to still drier Acacia 
forests, and in others to open areas of scrub, nearly treeless, the soil 
