fumaginen.
/ˈfjuːmədʒɪn//ˈfjuːmədʒiːn/ Botany.
A black superficial mould on plants, caused by fungi once grouped under the name Fumago, and associated with the honey-dew produced by certain insect pests.
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fenOE
mildew1340
moulda1400
moul1440
vinny1538
hoar1548
mouldingc1610
vinegar-plant1797
moulder1817
mucor1818
vinegar mother1839
leaf rust1859
wood-mould1869
Isaria1874
grease mould1882
brown mould1883
pourriture noble1911
fumagine1913
1879 G. B. Buckton Monogr. Brit. Aphides II. 20 Passerini remarks that Rhopalosiphum dianthi is one of the most destructive Aphides in foreign greenhouses. They there give rise to a kind of mould on the plants they infest, to which the French give the name Fumagine.]
1913 D. Grant tr. E. Bourcart Insecticides, Fungicides & Weedkillers 393 Fumagine is the term applied to the black coating which appears on certain plants infested by plant lice or cochineals (scale insects). This coating is formed by the black mycelium of a fungus which lives solely on the saccharine liquid, the honey-dew, which the insects project on the leaves.
This entry has not yet been fully updated (first published 1933; most recently modified version published online June 2018).
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n.1913