P. alba suffers much from the ravages of wood-eating larvae, and also from fungoid growths, especially where the branches have been removed by pruning or accident.
The cells in which the fungoid organism is vigorously flourishing are exceedingly active, showing large size, brilliant nuclei, protoplasm and vacuole, all of which give signs of iptense metabolic activity.
" Wilt disease," or " frenching," perhaps the most important of the fungoid disease of cotton in the United States, is due to Neocosmospora vasinfecta.
So far the Hevea plantations in Ceylon and the East have not been seriously troubled by insect or fungoid pests, and those which have occurred have succumbed to proper treatment.
The most destructive form of fungoid disease 1.
The fungoid diseases of tobacco are comparatively unimportant; there are, however, some diseases of obscure origin which at times cause considerable damage.
Among the commoner of the galls of the Cynipidae are the " oak-apple " or " oak-sponge " of Andricus terminalis, Fab.; the " currant " or " berry galls " of Spathegaster baccarum, L., above mentioned; and the " oak-spangles " of Neuroterus lenticularis, 9 Oliv., generally reputed to be fungoid growths, until the discovery of their true nature by Frederick Smith, 10 and the succulent " cherry-galls " of Dryophanta scutellaris, Oliv.
C. Cooke, Fungoid Pests of Cultivated Plants; Thos.