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# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z


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

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

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

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.
Last Updated: 05-08-2006 @ 11:53 PM 
Submitted By: Oscarman

Staminoide
(STAM-in-ohd)
An often rudimentary, sterile or abortive stamen
Last Updated: 06-28-2006 @ 12:13 PM 
Submitted By: Oscarman

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

Stigma
That portion of the pistil that receives the pollen.
Last Updated: 04-29-2006 @ 07:28 PM 
Submitted By: Oscarman

Stipe
The stalk connecting pollinia and viscidium in a pollinarium.
Last Updated: 04-29-2006 @ 07:29 PM 
Submitted By: Oscarman

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.
Last Updated: 06-28-2006 @ 10:48 AM 
Submitted By: Oscarman

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

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

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

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

Terete
Cylindrical and slightly tapering; columnar, as some stems of plants.
Last Updated: 05-28-2006 @ 10:00 PM 
Submitted By: Oscarman

Terrestrial
A plant which grows in the ground.
Last Updated: 04-29-2006 @ 07:31 PM 
Submitted By: Oscarman

Tessellation
A checkered pattern.
Last Updated: 04-29-2006 @ 07:33 PM 
Submitted By: Oscarman

Tetraploid
Cells have four copies of each chromosome.
Last Updated: 04-29-2006 @ 07:33 PM 
Submitted By: Oscarman

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

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

Triploid
Cells having three copies of each chromosome.
Last Updated: 04-29-2006 @ 07:34 PM 
Submitted By: Oscarman

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