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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.
In botany and dendrology, a rhizome (/ ˈ r aɪ z oʊ m / RY-zohm) [note 1] is a modified subterranean plant stem that sends out roots and shoots from its nodes. Rhizomes are also called creeping rootstalks or just rootstalks. [3] Rhizomes develop from axillary buds and grow horizontally. The rhizome also retains the ability to allow new shoots ...
Corms can form many small cormlets called cormels, from the basal areas of the new growing corms, especially when the main growing point is damaged. These propagate corm-forming plants. A number of species replace corms every year by growing a new corm. This process starts after the shoot develops fully expanded leaves.
Taro corms. Corm. Amorphophallus konjac (konjac) Colocasia esculenta (taro) Eleocharis dulcis (Chinese water chestnut) Ensete spp. (enset) Nymphaea spp. (waterlily) Pteridium esculentum; Sagittaria spp. (arrowhead or wapatoo) Typha spp. Xanthosoma spp. (malanga, cocoyam, tannia, yautia and other names) Colocasia antiquorum (eddoe or Japanese ...
A number of plants have soil-level or above-ground rhizomes, including Iris species and many orchid species. T. Holm (1929) restricted the term rhizome to a horizontal, usually subterranean, stem that produces roots from its lower surface and green leaves from its apex, developed directly from the plumule of the embryo.
Jointed; separating freely, leaving a clean scar; e.g. the frond s of certain ferns where they join the rhizome. ascending 1. (of a stem) Spreading horizontally, then directed upward; an ascending stem is more or less prostrate near its base, then erect. 2. (of an ovule) Attached somewhat above the base. ascidiate
A rhizome is a horizontal stem that often grows underground, usually sending out roots and shoots from its nodes. Some plants have rhizomes that grow above ground or that lie at the soil surface, including some Iris species. Usually, rhizomes have short internodes; they send out roots from the bottom of the nodes and new upward-growing shoots ...
A harvested ginger rhizome. True roots: Storage taproot – e.g. carrot; Tuberous root or root tuber – e.g. Dahlia [4] Modified stems: Bulb (a short stem that produces fleshy scale leaves or modified leaf bases) – e.g. Lilium, Narcissus, onion; Caudex – e.g. Adenium (desert-rose) Corm – e.g. Crocus; Pseudobulb – e.g. Pleione ...
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