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The leaves are grooved (canaliculate), smooth and linear with a white to light green linear midrib on the upper surface, and grow up to 30 centimetres (12 in) long and 8 mm (1 ⁄ 4 in) broad. [ 4 ] O. umbellatum is scapose , with a glabrous flower stem ( scape ) that emerges from the leaf tufts later and is about 10–30 cm (4–12 in) in ...
Nyctinastic movements are associated with diurnal light and temperature changes and controlled by the circadian clock. It has been argued that for plants that display foliar nyctinasty, it is a crucial mechanism for survival; however, most plants do not exhibit any nyctinastic movements. [ 1 ]
Ficus plant grown under a white LED grow light. A grow light is an electric light that can help plants grow. Grow lights either attempt to provide a light spectrum similar to that of the sun, or to provide a spectrum that is more tailored to the needs of the plants being cultivated (typically a varying combination of red and blue light, which generally appears pink to purple to the human eye).
It has fleshy dark green, heart-shaped leaves and distinctive flowers with bright yellow, glossy petals. [ 4 ] [ 5 ] Native to Europe and Western Asia, it is now introduced in North America, where it is known by the common name fig buttercup and considered an invasive species .
Ulva intestinalis is a green alga in the family Ulvaceae, known by the common names sea lettuce, green bait weed, gutweed, [1] and grass kelp. [2] Until they were reclassified by genetic work completed in the early 2000s, the tubular members of the sea lettuce genus Ulva were placed in the genus Enteromorpha .
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Witchweeds are characterized by bright-green stems and leaves and small, brightly colored and attractive flowers. [5] They are obligate hemiparasites of roots and require a living host for germination and initial development, though they can then survive on their own. [6] The number of species is uncertain, but may exceed 40 by some counts. [6] [7]
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