Orchid Board - Most Complete Orchid Forum on the web ! > Glossary Orchid Glossary

Search Glossary
Search Word: Search in: Search Glossary Titles Only Search Glossary Text Only Search Glossary Titles & Text

#

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

Page 5 of 8 < 1 2 3 4 5 6 7 8 >

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

Node

Joint on a bloom stalk (spike) or stem from which other stems, leaves, flowers, or roots may emerge.

Last Updated: 09-07-2006 @ 08:37 AM  Submitted By: Oscarman

NOID

Common term used when the parentage or grex of a particular plant is unknown. Refers to a plant with no identification. Noids often result from the loss of the identifying plant tag from the pot.

Last Updated: 01-18-2013 @ 11:33 AM  Submitted By: Blondie

Nothogenus

(plural nothogenera) A genus denoting a hybrid or cross. Example: Aeridovanda (Aerdv.) is the genera name used to identify the result of hybridizing 2 genera (Aerides and Vanda).

Last Updated: 05-19-2015 @ 03:50 PM  Submitted By: Oscarman

Nothospecies

A hybrid which is formed by direct hybridization of two species, not other hybrids. May also be referred to as a Primary Hybrid

Last Updated: 05-19-2015 @ 03:50 PM  Submitted By: Oscarman

Osmophore

Secretory tissue, which produces fragrances that attract pollinators.

Last Updated: 04-27-2006 @ 11:03 PM  Submitted By: Oscarman

Ovary

The part of a flower which contains the ovules and eventually becomes the fruit, containing seed.

Last Updated: 04-27-2006 @ 11:03 PM  Submitted By: Oscarman

Ovule

A group of cells within the ovary that develops into a seed after fertilization.

Last Updated: 04-27-2006 @ 11:04 PM  Submitted By: Oscarman

Panicle

(PAN-ih-kul) A branching raceme.

Last Updated: 01-26-2008 @ 04:54 PM  Submitted By: Oscarman

Peduncle

(PEE-dung-kol) The basal stalk of an inflorescence.

Last Updated: 06-28-2006 @ 12:14 PM  Submitted By: Oscarman

Peloric

A term used to describe an unusual condition where all three petals (instead of just one) have developed to mimic the labellum in shape and/or color. Coined by Darwin to describe a mutant flower that has many planes of reflectional symmetry.

Last Updated: 06-28-2006 @ 10:46 AM  Submitted By: Oscarman

Perianth

(PEAR-ee-anth) The sterile parts of a flower; collectively, the sepals and petals

Last Updated: 07-06-2010 @ 12:52 AM  Submitted By: Oscarman

Petal

The whorl of flower parts just inside the sepals, usually colorful. The median petal of orchids, the labellum, is often differentiated in form and/or function. http://www.orchidboard.com/community/gallery/data/506/medium/Part_of_Flower.jpg][/url]

Last Updated: 07-23-2015 @ 11:56 PM  Submitted By: Oscarman

Photoperiod

(pho-toe-peer-i-od) The interval in a 24-hour period during which a plant (or animal) is exposed to light.

Last Updated: 06-21-2014 @ 02:35 PM  Submitted By: Oscarman

Photosynthesis

The process in green plants and certain other organisms by which carbohydrates are synthesized from carbon dioxide and water using light as an energy source. Most forms of photosynthesis release oxygen as a byproduct.

Last Updated: 04-27-2006 @ 11:09 PM  Submitted By: Oscarman

Phototropism

Phototropism is a growth movement induced by a light stimulus. Growth towards a source of light is called positive phototropism, that away from the source is termed negative phototropism. The tips of shoots are usually positively, that of roots negatively phototropic.

Last Updated: 07-20-2006 @ 10:47 PM  Submitted By: Oscarman

Pilose

Covered with hair, especially soft fine hair; furry.

Last Updated: 01-31-2013 @ 01:52 AM  Submitted By: Oscarman

Pod

See Capsule.

Last Updated: 05-08-2006 @ 11:48 PM  Submitted By: Oscarman

Pollinarium

A functional unit in orchid pollination, consisting of two or more pollinia, stalk or stipe, and viscidium.

Last Updated: 04-27-2006 @ 11:10 PM  Submitted By: Oscarman

Page 5 of 8 < 1 2 3 4 5 6 7 8 >