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The following terms are used to describe leaf morphology in the description and taxonomy of plants. Leaves may be simple (that is, the leaf blade or 'lamina' is undivided) or compound (that is, the leaf blade is divided into two or more leaflets). [1] The edge of the leaf may be regular or irregular, and may be smooth or have hair, bristles, or ...
While the virulence of P. cannabina pv. cannabina has not yet been studied extensively, a single square foot of marijuana plants can yield up to 6 ounces of sellable material which translates to a market value of roughly US$1800/sq ft, depending on strain and local market prices, [citation needed] so even a small overall yield loss due to ...
Puccinia thaliae is the causal agent of canna rust, a fungal disease of Canna. Symptoms include yellow to tan spots on the plant's leaves and stems. Initial disease symptoms will result in scattered sori (clustered sporangia), eventually covering the entirety of the leaf with coalescing postulates.
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Duration of leaves: Deciduous – leaves are shed after the growing season. Evergreen – leaves are retained throughout the year, sometimes for several years. Fugacious – lasting for a short time: soon falling away from the parent plant. Marcescent – dead leaves, calyx, or petals are persistent and retained. Persistent – see Marcescence ...
A host species for Schiffnerula cannabis has yet to be named. [4] However, a variety of signs are present with Schiffnerula cannabis.Respectively as black mildew are, flat, gray-black, and film like areas throughout the leaf, colonies of conidia on the surface of leaves, as well as ascomata and ascii are present on hosts as Schiffnerula cannabis runs its course. [4]
Leaf spots can vary in size, shape, and color depending on the age and type of the cause or pathogen. Plants, shrubs and trees are weakened by the spots on the leaves as they reduce available foliar space for photosynthesis. Other forms of leaf spot diseases include leaf rust, downy mildew and blights. [4]
A tall Foliage Group cultivar; green foliage, very large, broadly oblong shaped, maroon margin, spreading habit; oval stems, coloured green; spikes of flowers are open, red-orange with orange-red spots, staminodes are medium size, edges regular, labellum is gold flecked, stamen is gold with orange markings, style is orange, petals yellow, fully ...