Raceme
Influoresence having the oldest flowers opening first at the base whilst more are produced towards the growing tip or apex.
Radiate
Term to describe flowers with many petals that radiate from the reproductive centre. Not to be confused with daisies and members of the Asteraceae family where each flower is an inflorescence, the centre consisting of many flowers. An example of radiate flowers would be those of the Mesembryanthemum.
Ramose
Having many branches
Receptacle
Point where the flower head joins the stem. The petals, sepals, stamen and ovary all attach to the receptacle.
Respiration
Cellular respiration within the plant. The plant creates energy by breaking down the stored sugars in the presence of Oxygen the by products are Carbon Dioxide and Water.
Rhizome
A thick underground horizontal stem from which buds and roots develop. Usually persistent from year to year. An example of this would be Irises
Rotate
Term to describe flowers that have a short tube at the base the opens into petals that are free from each other as seen in flowers of the Tibucina.