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Small water-soaked lesions, maturing into sunken and brown spots with or without a yellow halo. May show concentric rings with purple margins. Necrotic tissue may fall out to appear shot-holed. Leaf spot on many plants and crops. Septoria: Small brown spots, that turns light tan to white in the centre. Leaf spot on many crops Bipolaris
Clathrus ruber is a species of fungus in the family Phallaceae, and the type species of the genus Clathrus.It is commonly known as the latticed stinkhorn, the basket stinkhorn, or the red cage, alluding to the striking fruit bodies that are shaped somewhat like a round or oval hollow sphere with interlaced or latticed branches.
These lesions first appear as small purple spots which turn red to brown and then black. Most spots are circular but can amalgamate to form large, irregular dead patches. [6] These spots tend to enlarge and separate from healthy tissue. Lastly, they drop out of the leaf giving a "shot-hole" appearance.
Alternaria does no direct damage to plants but surface cover of leaves will reduce the plants capacity to photosynthesise and may create an unsatisfactory plant appearance. [8] Canker Leptosphaeria coniothyrium and Cryptosporella umbrina – Cankers present as small yellowish or reddish spots on bark slowly increasing in size.
Snow mold is a type of fungus and a turf disease that damages or kills grass after snow melts, typically in late winter. [1] Its damage is usually concentrated in circles three to twelve inches in diameter, although yards may have many of these circles, sometimes to the point at which it becomes hard to differentiate between different circles.
Dianthus armeria is a species of open and periodically disturbed sites. It is normally an annual but can be biennial or a short-lived perennial. New leaf rosettes form at the base of old plants from buds located on their roots, demonstrating that this species is in fact a short-lived perennial and has a life-span of less than two and a half years. [6]
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Perforate leaves, sometimes called fenestrate, occur naturally in some species of plants. Holes develop as a leaf grows. Holes develop as a leaf grows. The size, shape, and quantity of holes in each leaf can vary greatly depending on the species and can even vary greatly within a given species.