Sydenham Edwards, John Lindley

Red-edged Fig Marigold (Red-edged Fig Marigold)

Red-edged Wood Sorrel (Red-edged Wood Sorrel)

Red-lead-coloured Pentlandia – Commodore Sulivan’s variety

Reflexed Bletia (Reflexed Bletia)

Rhododendron Aprilis (Rhododendron Aprilis)

Rhododendron Rollissonii (Rhododendron Rollissonii)

Rhomb-leaved Palavia (Rhomb-leaved Palavia)

Rhomb-lipped Dendrobium (Rhomb-lipped Dendrobium)

River Lupine (River Lupine)

Rock Abelia (Rock Abelia)

Rod-branched Fuchsia (Rod-branched Fuchsia)

Rooting Fuchsia (Rooting Fuchsia)

Rose Clare (Rose Clare)

Rose-coloured Barnadesia (Rose-coloured Barnadesia)

Rose-coloured Centradenia (Rose-coloured Centradenia)

Rose-coloured changeable Crinum (Rose-coloured changeable Crinum)

Rose-coloured Lissochilus (Rose-coloured Lissochilus)

Rose-coloured Pereskia (Rose-coloured Pereskia)

Rose-coloured Tree Rhododendron (Rose-coloured Tree Rhododendron)

Rosemary-leaved Gromwell (Rosemary-leaved Gromwell)

Rosemary-leaved Pultenaea (Rosemary-leaved Pultenaea)

Ross’s Odontoglossum

Rosy Echeveria (Rosy Echeveria)

Rosy Monkey-flower (Rosy Monkey-flower)

Rosy-armed Corethrostylis (Rosy-armed Corethrostylis)

Rough-barked Thorn – Single-fruited variety

Rough-barked Thorn (Rough-barked Thorn)

Rough-edged Blandfordia (Rough-edged Blandfordia)

Rough-leaved Conehead (Rough-leaved Conehead)

Rough-leaved Deutzia (Rough-leaved Deutzia)

Rough-Lipped Cattleya (Rough-Lipped Cattleya)

Rough-stemmed Tulip (Rough-stemmed Tulip)

Round-leaved Duvaua (Round-leaved Duvaua)

Round-leaved Psoralea (Round-leaved Psoralea)

Royal Purple Gaybine (Royal Purple Gaybine)

Ruddy Godetia (Ruddy Godetia)

Rushy Russelia (Rushy Russelia)

Russell’s Potentilla

Rusty Eria (Rusty Eria)

S. Leone Liparis (S. Leone Liparis)

Sad-coloured Cirrhaea (Sad-coloured Cirrhaea)

Saffron-coloured Eschscholtzia (Saffron-coloured Eschscholtzia)

Saffron-coloured Maxillaria (Saffron-coloured Maxillaria)

Sage-leaved Pear (Sage-leaved Pear)

Sage-leaved Slipper-flower (Sage-leaved Slipper-flower)

Sage-leaved Stachys (Sage-leaved Stachys)

Sand Calandrinia (Sand Calandrinia)

Sand Lotus (Sand Lotus)