upper surface

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Plant Pathology Glossary
... the amount of water vapour lost to the air from plant surfaces, particularly the upper surface of leaves.In zoology, cuticle also refers to the non-cellular outer layer of ... : - Palisade parenchyma: the tissue found beneath the upper epidermis of leaves, composed of elongate, tubular cells aligned perpendicular to the leaf surface. Palisade parenchyma cells generally contain an abundance of ...
bugs.bio.usyd.edu.au

Escobaria sneedii ssp. leii
... 1-2,5 cm in diameter. Tubercles: Cylindrical 5 mm long; On mature stems with upper surface grooved. Spines: 30 to 90 very small radials, typically white often brown at tip, fading ...
cactus-art.biz

Growing Fruit Crops in Containers
... depth which is the depth at which the plant was previously grown. The final soil surface should be 1-4 in. below the rim of the container, in direct proportion to ... , type and size of container, temperature, humidity, potting medium and others. For most plants, the upper surface of the soil should be allowed to become dry to the touch before watering. Then ...
edis.ifas.ufl.edu

African Violets
... of drainage. In general, water should be applied whenever the surface soil feels dry to the touch, but before it becomes ... bottom. When watering from the top, apply sufficient water to surface soil to thoroughly saturate it and discard excess water which ... and petiole rot. Yellowish rings, spots or streaks on the upper surface of leaves are caused by cold water touching relatively warm leaves ...
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Botany for the Beginner
... the ovary with its style on top of it. The style receives pollen on its upper surface (the stigma) the whole female structure being known as the gynoecium or pistil. Pollen is ... flower of the related genus Labichea is similar but with 4 petals (Fig. 3a). The upper one usually has a red basal flare; the sepals behind the petals are not shown ...
farrer.riv.csu.edu.au

Brown patches on potinara leaves - Orchids Forum - GardenWeb
... areas affected are only on the new leaves and appear to be developing on the upper surface but gradually going through to the underside of the leaf the whole of the leaves ...
forums2.gardenweb.com

Lilac Leafminer
... mine) on the underside of the leaf surface. As the larva grow inside the leaf, light green to brown blotches will appear on the leaves' upper surface. The blotches develop in response to ... and become brittle. The larva then exits the inner leaf surface, rolls the leaf up and begins to feed on the upper leaf surface within the curled portion. Description: The adult lilac leafminer ...
gardenline.usask.ca

Powdery Mildew on Vegetable Crops
... affected by the powdery mold. It may be first noticed as discoloured spots on the upper surface of leaves, which eventually turn powdery and enlarges covering the entire leaf. The plant tissue ... may die. Crucifers (Turnips, Broccoli, Cauliflower, Radishes): Spots of the mold first appear on the upper surface of leaves and stems until it covers them completely. Later the leaves may become pale ...
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Mosses and Liverworts in Wales: Pallavicinia lyellii
... bogs. It is readily identified by its very prominent midrib, which is raised from the upper surface of the thallus. It is currently known from only three sites in Wales. This page ...
home.clara.net

Mosses and Liverworts in Wales: Dunes & Duneslacks
... from year to year. Some slacks are merely damp during the winter months, with their surface lying close to the water table. Others can hold standing water (as in the picture ... colour with red-brown or purplish margins, and its branches up to 1cm wide. The upper surface of the thallus has hexagonal markings and at the centre of each hexagon is a ...
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