Ruellia macrantha

Ruellia makoyana

Ruellia nudiflora

Rumex acetosa

Rumex hydrolapathum

Rumex sanguineus var. sanguineus

Rumex scutatus

Rumex verticillatus

Ruschia pulvinaris

Ruscus colchicus

Ruta graveolens

Sabal minor

Saccharum ravennae

Sagina subulata

Sagittaria graminea 'Crushed Ice'

Sagittaria latifolia

Saintpaulia difficilis

Saintpaulia rupicola

Salix 'Americana'

Salix 'Americana' x eleagnos

Salix 'Aquatica Gigantea Germany'

Salix 'Flame'

Salix 'Harrison's Brown'

Salix 'Morton'

Salix 'Scarcuzam'