Category: R

Distribution restricted but formerly much more widespread.  

Remnant.  

Name or epithet that has been rejected by a decision of an official committee under the International Code of Botanical Nomenclature.  

(In palms) a narrow marginal strip on a pinnate leaf that is usually shed when the leaf unfolds.    

Radially symmetrical, actinomorphic. When the parts are all similar. Flowers that are radially symmetrical. Describes a flower with petals or sepals all of equal size and shape; radially symmetrical. Taking place again and again after the same period of time. Happening at the same time each day.  

Capsular fruit with three or more cells that breaks open when ripe (specialist term usually restricted to Euphorbiaceae).  

A region where the climate was relatively stable in a time of climatological changes elsewhere, so that many species were able to survive in that specific area while they disappeared elsewhere, allowing species that died out elsewhere to survive.  

(Of cells in surface tissue) refracting light.  

Curved backwards or downwards at a sharp angle. Turned down or curved backwards. Bent outward and downward. Sharply (not in a gradual curve) bent backwards, outwards or downwards. Abruptly bent or curved downward. Bent sharply downwards or backwards.  

(In aestivation) doubled back, the edges valvate and reflexed; (In leaflets of palms), Λ-shaped in cross-section.