Glossary of Botanical Terms To locate the word in which you are interested: Use the search box below to locate a word - exact spelling is required. Click on a letter in the alphabet below to see all definitions beginning with that letter.   Enter word below - exact spelling

 

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    Q

Quadrangularis - with four angles.

Quadrangulispinus - with four angled spines.

Quadricostatus - with four ribs.

Quadrispinus - with four spines.

Quinine - an alkaloid, found in the bark of the Cinchona tree, is used to treat malaria, a tropical parasitic disease carried by mosquitoes. Quinine is an essential bitter ingredient of certain drinks e.g. Indian tonic water, where it can be recognised by its blue fluorescence under ultra-violet (black) light illumination.
Structure of Quinine