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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

Maculate
Spotted or blotched.
Last Updated: 01-31-2013 @ 01:50 AM 
Submitted By: Oscarman

Marmoration
(Mar-mo-ra-tion)
A covering or incrusting with marble; a casing of marble; a variegating so as to resemble marble.
Last Updated: 10-25-2008 @ 02:51 AM 
Submitted By: Oscarman

Maudiae
A color type often used to describe paphiopedilum orchids which display flowers of green and white.
Last Updated: 01-18-2013 @ 11:28 AM 
Submitted By: Oscarman

Mericlone
(mer-i-KLOHN)
A plant derived from tissue culture that is identical to its parent.
Last Updated: 10-12-2008 @ 01:41 AM 
Submitted By: Oscarman

Meristem
(MER-i-stem)
Undifferentiated tissue, usually from a growing point, which is capable of developing into specialized tissue, used in mass propagation of orchids.
Last Updated: 10-12-2008 @ 02:09 AM 
Submitted By: Oscarman

MH (Metal Halide)
A high intensity discharge (HID) lamp in which the light is produced by arcing electricity through a mixture of metal halides. The light produced by metal halide lamps is in the white-blue spectrum, which encourages vegetative growth and bushiness, while discouraging upward growth.
Last Updated: 07-20-2006 @ 11:11 PM 
Submitted By: Oscarman

Microclimate
A climate created in a small area to suit specific plant needs such as elevated humidity or lowered temperatures.
Last Updated: 04-27-2006 @ 11:01 PM 
Submitted By: Oscarman

Monopodial
(mon-oh-POH-dee-al)
One of the two forms of orchid vegetative growth (the other is Sympodial), wherein a single vegetative shoot grows continually upward from the crown, such as in the growth of Phalaenopsis orchids.
Last Updated: 04-27-2006 @ 11:01 PM 
Submitted By: Oscarman

Mule Ear
Term used to describe a type of growth habit common in the Oncidium alliance.

Orchids which are characterized by the presence of thick, fleshy leaves and which is suited to growth in areas of high light. There may be a small pseudobulb at the base of the leaf.

The thick fleshy leaves of a "mule ear" oncidium serve the function of pseudobulbs.
Last Updated: 06-21-2014 @ 02:47 PM 
Submitted By: Oscarman

MV (Mercury Vapour)
The oldest member of the HID family, mercury vapour lamps work by arcing electricity through mercury vapour. While more efficient than incandescent, halogen and fluorescent lamps, mercury vapour lamps are the least effective of the entire HID family. This, combined with an improper colour spectrum for horticultural applications, makes mercury vapour lamps a poor choice for a grow light.
Last Updated: 07-20-2006 @ 11:13 PM 
Submitted By: Oscarman

Mycorrhiza
(plural: mycorrhizae, Greek for fungus roots)
The result of a symbiotic association between a fungus and a plant. This symbiosis takes place at the root level, where individual hyphae extending from the mycelium of a fungus colonize the roots of a host plant.
Last Updated: 04-27-2006 @ 11:02 PM 
Submitted By: Oscarman

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