from The Century Dictionary and Cyclopedia
- n. A large genus of pyrenomycetous fungi of the family Hypocreaceæ having the perithecia membranous, single, or variously aggregated on a stroma, and usually bright-colored.
- n. pl. nectrias. Any fungus of the genus Nectria. See apple-tree and plum canker, cacao and coral-spot disease, and Tubercularia.
Sorry, no etymologies found.
Blight in chestnuts, nectria canker and blight in black walnuts, blight in filberts (Cryptosporella), scab in pecans, and die-back Melanconium oblongum in butternuts.
A second problem is cottony scale, an insect that taps into tree bark, introducing another fungus, nectria.