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Aglaonema costatum, called the spotted evergreen, is a species of flowering plant in the genus Aglaonema, native to Bangladesh, Thailand, Peninsular Malaysia, Laos, Cambodia and Vietnam. [2] In these areas, the plant is typically found growing in the understory of tropical rain forests. [ 3 ]
Western white pine is a large tree, regularly growing to 30–50 metres (98–164 ft) tall. It is a member of the white pine group, Pinus subgenus Strobus, and like all members of that group, the leaves ('needles') are in fascicles (bundles) of five, [5] with a deciduous sheath. The needles are finely serrated, [5] and 5
Bidens alba is a species of flowering plant in the family Asteraceae, commonly known as shepherd's needles, beggarticks, Spanish needles, or butterfly needles. [1] Bidens means two- toothed, describing the two projections found at the top of the seeds, and alba refers to the white ray florets. [ 2 ]
Symptoms include needles developing yellow spots, horizontal brown bands around the needles, swelling of needles, and off-white fruiting bodies formed on infected needles. [ 2 ] [ 3 ] Because Cyclaneusma is an ascomycete it produces two spore types, an asexual ( conidiomata ) and sexual ( ascomycota ) spore.
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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]
The variegation of the leaves arises from the distinct white veins contrasted with the dark green of the leaf. The stems emerge from creeping rhizomes, growing 10–25 cm (4–10 in) tall. The nearly round flowers, which appear in early summer, are found on top of tall stalks. They are white or pinkish and are insect pollinated. The flowers ...
The leaves are evergreen, 2–4 cm (3 ⁄ 4 – 1 + 1 ⁄ 2 in) long and 2–5 mm (1 ⁄ 16 – 3 ⁄ 16 in) broad, green above, and white below, with dense, short, woolly hair. [ 7 ] The plant flowers in spring and summer in temperate climates , but the plants can be in constant bloom in warm climates; flowers are white, pink, purple or deep ...
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