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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 common parlance, underground storage organs may be generically called roots, tubers, or bulbs, but to the botanist there is more specific technical nomenclature: A harvested ginger rhizome. True roots: Storage taproot – e.g. carrot; Tuberous root or root tuber – e.g. Dahlia [4] Modified stems:
Ornamental bulbous plants, often called ornamental bulbs or just bulbs in gardening and horticulture, are herbaceous perennials grown for ornamental purposes, which have underground or near ground storage organs. Botanists distinguish between true bulbs, corms, rhizomes, stem tubers and tuberous roots, any of which may be termed "bulbs" in ...
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 to grow upwards. [4] A rhizome is the main stem of the plant that runs typically underground and horizontally to the soil surface.
Yam tubers. Tuberous stem. Apios americana (hog potato or groundnut) Cyperus esculentus (tigernut or chufa) Helianthus tuberosus (Jerusalem artichoke or sunchoke) Hemerocallis spp. (daylily) Lathyrus tuberosus (earthnut pea) Oxalis tuberosa (oca or New Zealand yam) Plectranthus edulis and P. esculentus (kembili, dazo, and others) Solanum ...
Stem tubers manifest as thickened rhizomes (underground stems) or stolons (horizontal connections between organisms); examples include the potato and yam. The term root tuber describes modified lateral roots , as in sweet potatoes , cassava , and dahlias .
Tubers develop from either the stem or the root. Stem tubers grow from rhizomes or runners that swell from storing nutrients while root tubers propagate from roots that are modified to store nutrients and get too large and produce a new plant. [22] Examples of stem tubers are potatoes and yams and examples of root tubers are sweet potatoes and ...
bulb A thick storage organ, usually underground, consisting of a stem and leaf bases (the inner ones fleshy). bulbel A bulb arising from another bulb. See bulblet. bulbil A small, deciduous bulb or tuber formed in the axil of a leaf or pinna; a means of vegetative propagation. bulblet A bulb arising from another bulb; a bulbel. bullate 1.
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