Marasmius heinemannianus Antonin is described as a new species from the Ata
cora province in the north-west Benin, West Africa. It belongs to the sect,
Globulares, and is characterized in having rather large, fleshy carpophore
s of the habitus of M. oreades, brightly orange-brown, reddish-brown to yel
low-orange pileus, yellowish white spore print, by the presence of cheilocy
stidia, pleurocystidia, as well as caulocystidia, rather large spores, and
it grows on open grassy places. Moreover, the presence of the thick-walled
dextrinoid 'resting' spores and sclerobasidia is rather unique in the genus
Marasmius. It represents an edible species known under the name 'bawafobi'
to local people.