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A common example is the curling of Rhododendron leaves in response to cold temperatures. Mimosa pudica also show thermotropism by the collapsing of leaf petioles leading to the folding of leaflets, when temperature drops. [1] The term "thermotropism" was originated by French botanist Philippe Van Tieghem in his 1884 textbook Traité de ...
The flowers, seeds, stalks, and tender leaves of many species of Brassica can be eaten raw or cooked. [5] Almost all parts of some species have been developed for food, including the root (swede, turnip), stems (), leaves (cabbage, collard greens, kale), flowers (cauliflower, broccoli, romanesco broccoli), buds (Brussels sprouts, cabbage), and seeds (many, including mustard seed, and oil ...
These are included within the species Brassica oleracea, such as kale (Brassica oleracea var. acephala). [1] The name literally means "without a head" in contrast to those varieties known as capitata or "with a head". This group includes a number of species, both wild and cultivated, many of which are grown for their edible leaves and flowers.
Spring greens are a cultivar of Brassica oleracea in the cultivar acephala group, similar to kale, in which the central leaves do not form a head or form only a very loose one. [1] It is considered to be closer to wild cabbage than most other domesticated forms, and is grown primarily in northern Europe , where its tolerance of cold winters is ...
cross section of a curled leaf of Ammophila (plant) (40x magnified); white buliform cells are visible at the base of the grooves. During drought, the loss of water through vacuoles induces the reduced bulliform cells to allow the leaves of many grass species to close and the two edges of the grass blade fold toward each other. Once enough water ...
Brassica fruticulosa has a similar odour to cabbage and broccoli, when crushed. The plant's stem is smooth and erect, varies from grey to green in colour, and can reach a height of 50 centimetres. The upper and lower leaves are stemmed, with the lower leaves being lyre-shaped, lobed near the base, and bristly in parts. The lower leaves measure ...
Temperature Extremes. The ideal temperature range for a prayer plant is between 60 to 80 degrees Fahrenheit, says Langelo. Any temperature that is lower or higher can cause the leaves to curl.
Hirschfeldia incana (formerly Brassica geniculata) is a species of flowering plant in the mustard family known by many common names, including shortpod mustard, buchanweed, hoary mustard [1] and Mediterranean mustard. [2] It is the only species in the monotypic genus Hirschfeldia, which is closely related to Brassica. [3]