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As the new corm grows, short stolons appear that end with the newly growing small cormels. As the plants grow and flower, they use up the old corm, which shrivels away. The new corm that replaces the old corm grows in size, especially after flowering ends. The old corm produces the greatest number of cormels when close to the soil surface.
It is left to grow for years and signs that it has enough corms when the mother stems have fewer leaves and it has reached a sizable size with tubers. The harvested corms are cooked for food which is starchy. Unlike taro and eddo, it is not purposely cultivated for its starchy corm for food. It usually grows in the wild in swampy areas and marshes.
Crocus is an acaulescent (lacking a visible lower stem above ground) diminutive seasonal cormous (growing from corms) herbaceous perennial geophytic genus. [3] The corms are symmetrical and globose or oblate (round in shape with flatted tops and bottoms), and are covered with tunic leaves that are fibrous, membranous or coriaceous (leathery).
A geophyte (earth+plant) is a plant with an underground storage organ including true bulbs, corms, tubers, tuberous roots, enlarged hypocotyls, and rhizomes. Most plants with underground stems are geophytes but not all plants that are geophytes have underground stems. Geophytes are often physiologically active even when they lack leaves.
Under short-daylength conditions, the rhizomes grow downward and produce a corm at the tip. [9] [7] The photoperiod also significantly influences how fast the corms grow. Corms begin to develop much more slowly if the photoperiod exceeds 12 hours. [11] The corms are also the propagating material. [7] Alternatively, transplants can be used. [8]
Colocasia esculenta is a perennial, tropical plant primarily grown as a root vegetable for its edible, starchy corm. The plant has rhizomes of different shapes and sizes. Leaves are up to 40 by 25 centimetres (15 + 1 ⁄ 2 by 10 inches) and sprout from the rhizome. They are dark green above and light green beneath.
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