Pteridophyta collected in Northern Nigeria and Northern Cameroon

Abstract

25 species of <em>Pteridophyta</em> were collected in Northern Nigeria (mainly the Lake Chad Basin and the Mandara Mts.) and in the neighbouring parts of Cameroon. 11 of them have not been recorded previously from this area: <em>Isoetes schweinfurthii</em> A. Br. in Bak., <em>Selaginella tenerrima</em> A. Br. ex Kuhn, <em>Ophioglossum gomenzianum</em> Welw. ex A. Br., <em>Marsilea coromandeliana</em> Willd., <em>M. distorta</em> A. Br., <em>M. nubica</em> A. Br., <em>M. subterranea</em> Lepr. ex A. Br., <em>Azolla africana</em> Desv., <em>Ceratopteris richardii</em> Brogn., <em>Adiantum capillus-veneris</em> Linn., and <em>Actiniopleris semiflabellata</em> Pic. Ser.