Cultivars resistant to downy mildew have been developed for cucumber and cantaloupe and to a lesser extent for squash and pumpkin.
A characteristic useful for identification is that the young leaves emerge downy on the underside.
There is a crest of short downy feathers on the forehead and crown and the throat and lower neck have a scattering of downy feathers.
Leaves are very large (4090 cm), with 1119 broad leaflets, softly downy, margins serrated.
Each leaflet is long, with a finely toothed margin and (particularly in spring) downy surfaces.
Downy young are silvery grey above and white below.
The juvenile vulture has a dark bill and eyes, and a downy, gray neck that soon begins to turn the orange of an adult.
Chicks have downy brown and buff plumage, and the fledged young are similar in appearance to the adult female.
