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Most commonly Cephaleuros virescens is identified by the leaf spots it causes. Theses leaf spots are an orange-brown rust in color and usually occur entirely on the upper leaf surface, although leaf spots on the undersides of infected leaves have been reported. The spots are fuzzy in texture and approximately 2 cm (0.8 in) in diameter. [2]
This species has serrated, dull green leaves and large, bright flower spikes, initially white before opening to a bright orange. Its common name arises from the partly opened inflorescence, which is shaped like an acorn. The tree is a popular garden plant and also of importance to the cut flower industry.
A leaf spot is a limited, discoloured, diseased area of a leaf that is caused by fungal, bacterial or viral plant diseases, or by injuries from nematodes, insects, environmental factors, toxicity or herbicides. These discoloured spots or lesions often have a centre of necrosis (cell death). [1]
Coccinella leonina or as its common name of orange spotted ladybird suggests, has 16 yellow/orange spots on its black body, [1] with a squarish yellow/orange spot on both sides above the pronotum on the thorax [2] and then 14 other spots on its black elytra [3] which are larger and mostly separated by 1 mm diameter of the black background at the most. [2]
The flowers are 2–3 cm (3 ⁄ 4 – 1 + 1 ⁄ 4 in) long, [10] orange (sometimes blood orange or rarely yellow) with a three-lobed corolla; one of the calyx lobes is colored similarly to the corolla and forms a hooked conical spur at the back of the flower. Plants may also produce non-showy cleistogamous flowers, which do not require cross ...
Hard spot lesions on an orange host. Hard spots are the most common lesions. They are small, round, and sunken. The average diameter of hard spot lesions ranges from 3–10 mm (.12-.4 in). [13] [14] They have dark red to chocolate brown margins and often have pycnidia in the gray-colored centers. [15] A green halo may be present around the ...
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Preferring light-coloured blooms and often appearing in plague numbers, flowers are often left looking scarred, warped, and lustreless. [4] Rose slugs (rose sawflies) – Sawflies are non-stinging wasps (Hymenoptera) in the suborder Symphyta, not flies . They lay eggs in plant leaves or stems with a saw-like ovipositor.
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