R

R

• Ramonda
• Ranunculus
• Ranzania
• Raoulia
• Raphia
• Ratibida
• Ravenala
• Rebutia
• Rehderodendron
• Rehmannia
• Reineckia
• Reinwardtia
• Reseda
• Retama
• Rhamnus
• Rhaphidophora
• Rhaphiolepis
• Rhapidophyllum
• Rhapis
• Rheum
• Rhexia
• Rhipsalis
• Rhodanthe
• Rhodanthemum
• Rhodiola
• Rhodochiton
• Rhododendron
• Rhodohypoxis
• Rhodophiala
• Rhodothamnus
• Rhodotypos
• Rhoeo
• Rhoicissus
• Rhombophyllum
• Rhus
• Rhynchelytrum
• Rhynchostylis
• Ribes
• Richea
• Ricinus
• Rigidella
• Robinia
• Rochea
• Rodgersia
• Rodriguezia
• Rohdea
• Romanzoffia
• Romneya
• Romulea
• Rondeletia
• Rose
• Roscoea
• Rosmarinus
• Rossioglossum
• Rothmannia
• Roystonea
• Rubus
• Rudbeckia
• Ruellia
• Rumex
• Rumohra
• Rupicapnos
• Ruschia
• Ruscus
• Russelia
• Ruta (rue)

Isatis

Isatis is a genus of about 30 species of flowering plants in the family Brassicaceae, native to the Mediterranean region east to central Asia.


Selected Species
Isatis tinctoria - Woad (or glastum) is the... more >>>

Welwitschia

Welwitschia is a monotypic genus of gymnosperm plant, comprised solely of the very distinct Welwitschia mirabilis. It is the only genus of the family Welwitschiaceae, in the order Welwitschiales, in the division Gnetophyta. The plant is... more >>>

Calamintha

Calamintha is a genus of plants that belongs to the family Lamiaceae. There are about thirty species in the genus which is native to the northern temperate regions of Europe, Asia and America.

USES
Calamintha... more >>>

Onopordum

Onopordum is a genus of about 40 species of thistles belonging to the family Asteraceae, native to Europe (mainly the Mediterranean region), northern Africa, the Canary Islands, the Caucasus, and southwest and central Asia. They grow on... more >>>

Hedysarum

Hedysarum (Sweetvetch) is a genus of the botanical family Fabaceae, consisting of about 309 species of annual or perennial herbs in Asia, Europe, North Africa, and North America.

Hedysarum leaves are imparipinnate, with leaflets... more >>>