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Leaf scorch (also called leaf burn, leaf wilt, and sun scorch) is a browning of plant tissues, including leaf margins and tips, and yellowing or darkening of veins which may lead to eventual wilting and abscission of the leaf.
Although yellowing leaves might indicate that peace lilies are stressed by their environment, peace lily leaves naturally turn yellow as they age. This type of leaf yellowing typically occurs on ...
The natural variance of leaf form has been exploited in the selection of plants for the market. Broader and lobate leaves of some Alyogyne cultivars may have been hybridized with Alyogyne huegelii. The former name of Hibiscus hakeifolia and other synonyms are still given in some sources.
Bacterial leaf spot caused by Pseudomonas cichorii on a hibiscus leaf. Bacterial leaf spots show as necrotic, circular or angular lesions and may have a yellowish outline or halo [7] Early symptoms of bacterial leaf spots show on older leaves and lesions appear water-soaked. [12]
A Liquidambar leaf with interveinal chlorosis Lemon shrub with chlorosis. Chlorosis is typically caused when leaves do not have enough nutrients to synthesise all the chlorophyll they need. It can be brought about by a combination of factors including: a specific mineral deficiency in the soil, such as iron, [3] magnesium or zinc [4]
The hairless leaves are alternate, 8 to 15 centimetres (3 to 6 in) long, divided into 3–5 pointed lobes (cleft) and have serrate or crenate edges. They are simple and pointed at the tip. The leaves with three lobes resemble a medieval halberd because the middle lobe is much larger than the two side lobes. The five-lobed leaves also look like ...
Salvia farinacea, the mealycup sage, [1] or mealy sage, [2] is a herbaceous perennial native to Nuevo León, Mexico and parts of the United States including Texas and Oklahoma. [3] Violet-blue spikes rest on a compact plant of typically narrow salvia-like leaves; however, the shiny leaves are what set this species apart from most other Salvia ...
Hibiscus denudatus (common names: paleface, rock hibiscus) is a perennial shrub of the mallow family, Malvaceae.It is in the rosemallow genus, Hibiscus. It is found in the southwest of North America in the southwestern United States and northern Mexico in the states of extreme southeast California, southern Nevada, southern Arizona and New Mexico, southwest Texas, Baja California-north, Sonora ...