Skotoperiod |
(skoe-toe-peer-i-od)
The period of darkness, or absence of daylight, experienced by a plant (or animal). |
Last Updated: 06-21-2014 @ 02:39 PM Submitted By: Oscarman
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Species |
Linnaean unit of plant classification; group of populations of similar morphology and constant distinctive characters, thought to be capable of interbreeding and producing offspring. |
Last Updated: 06-21-2014 @ 02:52 PM Submitted By: Oscarman
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Specimen |
A single plant of unusual size and number of flowers for the variety, exhibiting fine culture. |
Last Updated: 01-26-2008 @ 04:59 PM Submitted By: Oscarman
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Spur |
A slender hollow projection from one of the floral segments, usually the labellum. Generally contains nectar to entice pollinating moths and other insects to the flower.
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Last Updated: 05-08-2006 @ 11:53 PM Submitted By: Oscarman
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Staminoide |
(STAM-in-ohd)
An often rudimentary, sterile or abortive stamen
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Last Updated: 06-28-2006 @ 12:13 PM Submitted By: Oscarman
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Stem Propagation |
A method of vegetative reproduction used to produce identical plants of a particular variety or cultivar. It consists of taking sections of a flower stem which has with live nodes and culturing them in a nutrient agar mixture. This must be completed under sterile conditions and treated in the same manner as flasks sown with seed. |
Last Updated: 05-20-2006 @ 12:42 AM Submitted By: Oscarman
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Stigma |
That portion of the pistil that receives the pollen. |
Last Updated: 04-29-2006 @ 07:28 PM Submitted By: Oscarman
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Stipe |
The stalk connecting pollinia and viscidium in a pollinarium. |
Last Updated: 04-29-2006 @ 07:29 PM Submitted By: Oscarman
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Stolon |
A shoot that bends to the ground and takes root; more commonly, a horizontal stem at or below surface of the ground that gives rise to a new plant at its tip.
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Last Updated: 06-28-2006 @ 10:48 AM Submitted By: Oscarman
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Stoma |
pl: Stomata
Natural openings in the epidermis of the stem or leaf of a plant, which are surrounded by specialized guard cells and allow gaseous exchange with the air. |
Last Updated: 06-28-2006 @ 09:48 AM Submitted By: Oscarman
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Sympodial |
(sim-POH-dee-al)
One of the two forms of orchid growth (the other is Monopodial), wherein each new lateral growth arises from the Rhizome of a previous growth, such as in the growth of a Cattleya orchid. |
Last Updated: 04-29-2006 @ 07:30 PM Submitted By: Oscarman
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Synsepalum |
A floral part formed by the partial or complete fusion of two or more sepals. |
Last Updated: 04-29-2006 @ 07:30 PM Submitted By: Oscarman
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Tepal |
In a general sense, a tepal is an element of the perianth of a flower, such as a petal or sepal. The perianth comprises the outer, sterile whorls of a flower. The term tepal is usually used when all segments of a perianth are of similar shape and color (that is, undifferentiated) |
Last Updated: 07-07-2006 @ 09:59 AM Submitted By: Oscarman
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Terete |
Cylindrical and slightly tapering; columnar, as some stems of plants. |
Last Updated: 05-28-2006 @ 10:00 PM Submitted By: Oscarman
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Terrestrial |
A plant which grows in the ground. |
Last Updated: 04-29-2006 @ 07:31 PM Submitted By: Oscarman
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Tetraploid |
Cells have four copies of each chromosome. |
Last Updated: 04-29-2006 @ 07:33 PM Submitted By: Oscarman
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Tissue Culture |
Also called micropropagation, is a practice used to propagate plants under sterile conditions, often to produce clones of a plant. |
Last Updated: 05-14-2006 @ 01:29 PM Submitted By: Oscarman
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Transpiration |
The process by which water absorbed by plants, usually through the roots, is evaporated into the atmosphere from the plant surface, principally from the leaves. |
Last Updated: 04-29-2006 @ 07:34 PM Submitted By: Oscarman
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Triploid |
Cells having three copies of each chromosome. |
Last Updated: 04-29-2006 @ 07:34 PM Submitted By: Oscarman
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