Dictionary
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WordDescription
Recommended amount  The amount that will give the effect as described. 
Recurved  Curved backwards or downwards. 
Reflexed  Abruptly recurved. 
Rembrandt group  Tulip cultivars with broken flowers, striped or marked brown, bronze, black, red, pink or purple on red, white or yellow ground, caused by virus infection. Long stemmed. This tulip was often depicted during Rembrandt's era, whence the name. 
Rhizome  A thick horizontal underground stem from which buds and roots develop. Usually persistent from year to year. 
Rim  Edge. 
Rosette  Leaves clustered together in circular pattern most commonly being close to the ground or touching the ground.