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Leaf spot. 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] Symptoms can overlap across causal ...
As it feeds, the hibiscus mealybug injects into the plant a toxic saliva that results in malformed leaf and shoot growth, stunting, and occasional death. Leaves show a characteristic curling, similar to damage caused by viruses. Heavily infested plants have shortened internodes leading to resetting or a "bunchy top" appearance.
Powdery mildew is a fungal disease that affects a wide range of plants. Powdery mildew diseases are caused by many different species of ascomycete fungi in the order Erysiphales. Powdery mildew is one of the easier plant diseases to identify, as the signs of the causal pathogen are quite distinctive. Infected plants display white powdery spots ...
Hibiscus [2] [3] is a genus of flowering plants in the mallow family, Malvaceae. The genus is quite large, comprising several hundred species that are native to warm temperate, subtropical and tropical regions throughout the world. Member species are renowned for their large, showy flowers and those species are commonly known simply as ...
Hibiscus aculeatus is a flowering plant. Hibiscus aculeatus is described by Weakley as having harshly scabrous stems and leaves [ 2] with three lobes. The flower can be identified by a dark red inner circle surrounded by a cream to white outer circle pattern on the petals. The perennial shrub is known to flower at any point from late spring to ...
Spilocaea oleaginea. Spilocaea oleaginea is a deuteromycete fungal plant pathogen, the cause of the disease olive peacock spot, also known as olive leaf spot and bird's eye spot. This plant disease commonly affects the leaves of olive trees worldwide. The disease affects trees throughout the growing season and can cause significant losses in yield.
Tectocoris diophthalmus, commonly known as the hibiscus harlequin bug or cotton harlequin bug, is the sole member of the genus Tectocoris [1] and subfamily Tectocorinae. It is a brightly coloured convex and rounded shield-shaped bug with a metallic sheen that grows to about 20 mm. Adult females are mostly orange and males are both blue and red ...
Hibiscus. Species: H. heterophyllus. Binomial name. Hibiscus heterophyllus. Vent. [1] Hibiscus heterophyllus, commonly known as native rosella or toilet paper bush, [2] is a flowering plant in the family Malvaceae. It a shrub or small tree with white, pale pink or yellow flowers with a dark red centre and grows in New South Wales and Queensland.