Web25 Nov 2024 · Many types of trees have stems with opposite leaves and the leaf shape depends on the species of tree. Leaves that grow opposite … Web24 Mar 2024 · Algal leaf spot is a disease that affects trees and shrubs with thin, leathery leaves. It is a disease that quite severely spoils the appearance of the bright green leaves …
Leaf structures, ecosystems and habitats - BBC Bitesize
WebYou may see the following symptoms: Scales or shell-like bumps on plant stems and the underside of leaves. These are the outer coverings of scale insect Large populations may result in poor growth Some species of scale insect excrete honeydew, which accumulates on the upper leaf surfaces. Web4 Mar 2024 · Removing leaf debris from under the plant, pruning out badly infested branches, and watering from below will help keep this disease in check. Small Black or Brown spots. Small black or brown spots on the underside of leaves or stems could be scale insects. We discuss scale in the pest section of this article. Yellow Leaves tricolored blackbird scientific name
White Bugs on Plants (Tiny and Small): Pictures, Identification, and …
WebThe underside of the leaf is hairy, the top is glossy and mid green in colour. Several weeks after the initial appearance of the bodies, a rust will begin to form on the underside of the … WebLook out for: the underside of the leaves which is paler than the upper side. The stems of the leaves are also distinctly flattened. It is the whitest tree in the landscape, and from a … Webthe underside of the leaf has hairs on it; the underside of the leaf has no hairs; Hairs on upper side of leaf blade the upper side of the leaf is not hairy, or has very few hairs Leaf blade base shape. the base of the leaf blade is cuneate (wedge-shaped, tapers to the base with relatively straight, converging edges), or narrow tri colored boxer