Select Genus

Choose from the Genera below to see a list of species and cultivars.
Email us if the plant you wish to report is not listed on the site, or to report any nomenclature errors.

R

Radiola
Ramonda
Ranunculus
Raoulia
Raphanus
Rapistrum
Ratibida
Rehmannia
Reseda
Rhamnus
Rhaphiolepis
Rhapidophyllum
Rhaponticum
Rheum
Rhexia
Rhinanthus
Rhodiola
Rhododendron
Rhodohypoxis
Rhodotypos
Rhus
Rhynchospora
Ribes
Ricinus
Robinia
Rodgersia
Romanzoffia
Romneya
Rorippa
Rosa
Roscoea
Rosmarinus
Rotala
Rubus
Rudbeckia
Ruellia
Rumex
Rumohra
Rupertia
Ruppia
Ruscus
Ruta