Luokka Kasvitiedebulgariaenglantiespanjaesperantohollantiitaliajapanikreikkalatinalatvialiettuanorjaportugalipuolaranskaruotsisaksasuomitanskaturkkitšekkiunkarivenäjäviro

retrolaminar retroserrate retuse reverse revolute rhamnus rhaphe rheophyte rhexia rhizanthous rhizine rhizocarpous rhizogen rhizoid rhizomatous rhizome rhizophorous rhizotaxis rhytidome rib rigidulous ring romneya rosaceous roseheart radish rosette rosid rostellum rosulate rotundifolious rough-leaved round-leaved rounded rubiginose

rubigo rubus ruderal rugose rumex ruminate ruminated runcinate runner running rupestral rupicolous rutaceous sabine saccate saccus safflower sagittate saintpaulia Sakurajima Sakurajima daikon Sakurajima radish salsola salsolaceous salsuginous samaroid sandarac sandersonia sanguinaria sanicle santalaceous santalum sap ball

sap tube sapindaceous sapotaceous sarcobasis sarcocarp sarcoderm sarment sarmentaceous sarmentose satyrion savine saxifragaceous scab scandent scape scapeless scapiform scapus scarious schizaeaceous schizocarp schizogenesis schlumbergera sciaphilous scilla sciophyte scitamineous sciuroid sclerenchyma sclerogen scleroid sclerosed scoke