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Calathea crotalifera, the rattlesnake plant or rattle shaker or Cascabel, is a species of flowering plant in the family Marantaceae. [2] It is native to central and southern Mexico , Central America , and tropical South America as far south as Ecuador , and it has been introduced to Hawai'i and Puerto Rico . [ 1 ]
Calathea leaves are often large and colorfully patterned. [3] The leaves are often variegated with bright colors such as pink, orange, red, and white. [4] The underside of their leaves are frequently purple. [4] During the night, the leaves fold up. [3] In the morning, the leaves unfurl in search of the morning sun. [3]
Wilting also serves to reduce water loss, as it makes the leaves expose less surface area. [1] The rate of loss of water from the plant is greater than the absorption of water in the plant. The process of wilting modifies the leaf angle distribution of the plant (or canopy) towards more erectophile conditions. Lower water availability may ...
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]
Goeppertia warszewiczii (previously Calathea warscewiczii) is a species of perennial, herbaceous plant in the Marantaceae family, endemic to Costa Rica and Nicaragua.It grows up to 0.5 to 1 meters (20-40 inches) high, by 0.5 to 1 meters (20-40 inches) wide, with patterned lanceolate leaves, and white cone-like inflorescences that fade to yellow or pink.
The pathogen causes a disease originally named yellow spot but now commonly called tan spot, yellow leaf spot, yellow leaf blotch or helminthosporiosis. [2] [3] At least eight races of the pathogen are known to occur based on their virulence on a wheat differential set. [4] The tan (yellow) spot fungus was first described by Nisikado in 1923 in ...
It prefers a brightly-lit spot, but does not tolerate direct sun. The soil should be kept moist throughout the summer, when it cannot tolerate drought . Nutrition can be given every other week during the growing season from spring to fall, but no supplement during the winter.
Water drops on a leaf A water drop falling from a tap. A drop or droplet is a small column of liquid, bounded completely or almost completely by free surfaces.A drop may form when liquid accumulates at the end of a tube or other surface boundary, producing a hanging drop called a pendant drop.