Leaf-primordium
noun, Botany.
1.
a group of cells that will develop into a leaf, seen as small bulges just below the shoot apex.
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noun, Plant Pathology. 1. a viral disease of plants, especially potatoes, characterized by upward rolling of the leaflets, chlorosis, stunting, and necrosis of the phloem.
- Leaf-roller
noun 1. any of several insects, especially moths of the family Tortricidae, the larvae of which form a nest by rolling and tying leaves with spun silk.
- Leaf-rust
noun, Plant Pathology. 1. a disease, especially of cereals and other grasses, characterized by rust-colored pustules of spores on the affected leaf blades and sheaths and caused by any of several rust fungi.
- Leafs
[leef] /lif/ noun, plural leaves [leevz] /livz/ (Show IPA) 1. one of the expanded, usually green organs borne by the stem of a plant. 2. any similar or corresponding lateral outgrowth of a stem. 3. a petal: a rose leaf. 4. leaves collectively; foliage. 5. Bibliography. a unit generally comprising two printed, blank, or illustrated […]
- Leaf-scald
noun, Plant Pathology. 1. a bacterial disease of sugarcane, characterized by irregular, bleached streaks on the leaves and defoliation and caused especially by Bacterium albilineans.