A Grammatical Dictionary of Botanical Latin

Erysiphe R. Hedw. ex DeCandolle 1805(Erysiphaceae; Erysiphales; Ascomycetes), fungus, the cause of powdery mildew, posing problems on cucurbit family and bean; occurs on species in Malvaceae, Manispermaceae, Moraceae, Nyctaginaceae, Polygonaceae, Solanaceae, Urticaceae. “The name given to mildew by the Greeks. Helvellaceae. Very minute, mostly whitish species, found most commonly in autumn, on a great variety of plants, shrubs, and trees” (Paxton).

Erysiphe R. Hedw. Ex DC.; dim. Erysiphella Peck, 1876.

NOTE: cf. Gk. erysibE (s.f.I), “rust,’ in corn [i.e. wheat]” (Liddell & Scott); Erysibe was later described under genus Erysibe Wallr. 1833.

Erysiphe,-es (s.f.I); also Erysibe,-es (s.f.I).

NOTE: ‘rust,’ occurs in cereal crops, esp. wheat; fungus species in the genus Puccinia; powdery mildew is also a disease of wheat due to the fungus Blumeria graminis.

Erysiphe,-es (s.f.I), rust or mildew of wheat.

      singular     plural      
Nom.	erysiphē	erysiphae
Gen.	erysiphēs	erysiphārum
Dat.	erysiphae	erysiphīs
Acc.	erysiphēn	erysiphās
Abl.	erysiphē	erysiphīs

Astragalus erysiphe Eig; an unresolved name(Fabaceae) [The Plant List Oct. 2024]

NOTE: Erysiphe astragali, causing disease of Astragalus spp.