any of various plant diseases in which the leaves form a radial cluster on the stem; cf. sense 5d.

any of various virus diseases of plants, characterized by a mottled pattern of discoloration on the leaves.

In scientific and technical use. = mosaic disease n. at compounds 2. Also: the mottled discoloration characteristic of mosaic disease.

a virus disease of plants (esp. bananas) in which the leaves are crowded at the tip of the stem.

a virus disease of herbaceous plants, esp. tomatoes, in which it causes curling and necrotic spotting of the leaves.

= sense 7 above.

Any of various virus diseases of plants which cause discoloured stripes to appear on their leaves; = streak disease n. at compounds 2 below.

a virus causing a streak disease in plants.

A local name for the spotted wilt virus disease of tomato; also, a similar disease of tobacco.

a plant disease marked by tumours on roots, stems, or leaves and enlargement of veins and caused by the wound-tumour virus, Aureogenus magnivena…

A viroid disease of certain citrus plants, esp. of the trifoliate orange (Poncirus trifoliata), the symptoms of which include exfoliation, scaling…