1. A
2. B
3. C
4. D
5. E
6. F
7. G
8. H
9. I
10. J
11. K
12. L
13. M
14. N
15. O
16. P
17. Q
18. R
19. S
20. T
21. U
22. V
23. W
24. X
25. Y
26. Z

1. Rabbits Foot Fern Also known as: Davallia fejeensis
2. Rabbit's Foot Fern Also known as: Golden Polypody, PHLEBODIUM
3. Radermachera sinica Also known as: China Doll
4. Radiator Plant Also known as: Peperomia, Peperomia
5. Radiator Plants Also known as: Pepper Elder, PEPEROMIA
6. Radish Also known as: Raphanus sativus
7. Ragweed Also known as: Ambrosia Artemisiifolia
8. Rain Lily Also known as: Cocoa Flower, ZEPHYRANTHES
9. Rainbow Bush Also known as: Elephant Bush, Portulacaria afra 'Variegata'
10. Rainbow Cactus Also known as: Echinocereus rigidissimus
11. Rainbow Vine Also known as: Pellionia pulchra
12. Ranunculus Also known as: Ranunculus Asiaticus
13. Raspberry Also known as: Rubus idaeus
14. Rat Myrtle Also known as: Grass Myrtle, Sweet Grass, Sweet Sedge, ACORUS
15. Rat tail Cactus Also known as: Aporocactus flagelliformis
16. Rat Tail Plant Also known as: Crassula lycopodioides
17. RAVENALA Also known as: Traveler's Palm
18. Ravenala madagascariensis Also known as: Traveler's Tree
19. Ravenea rivularis Also known as: Majesty Palm
20. REBUTIA Also known as: Crown Cactus
21. Red Aloe Also known as: Cape Aloe, Ferocious Aloe, Aloe ferox
22. Red Ash Also known as: Green Ash, Fraxinus Pennsylvanicus
23. Red Bird Cactus Also known as: Jacobs Ladder, Slipper Spurge, PEDILANTHUS
24. Red Crown Cactus Also known as: Rebutia minuscula
25. Red False Buck's Beard Also known as: Astilbe x arendsii
26. Red Ginger Also known as: Alpinia purpurata
27. Red Ivy Also known as: HEMIGRAPHIS
28. Red Maple Also known as: acer rubrum
29. Red Monkey Flower Also known as: Mimulus cardinalis
30. Red Oak Also known as: Quercus rubra
31. Red Passion Flower Also known as: Passiflora racemosa
32. Red Pineapple Also known as: Ananas comosus
33. Red Powder Puff Also known as: Calliandra haematocephala
34. Red Primrose Also known as: Primula obconica 'Agate Rouge'
35. Red Riding Hood Tulip Also known as: Tulipa greigii 'Donna Bell'
36. Red Spider Lily Also known as: Lycoris radiata
37. Red Spike Also known as: Cephalophyllum alstonii
38. Reed Palm Also known as: Bamboo Palm, Chamaedorea seifrizii
39. Reinwardtia indica Also known as: Yellow Flax
40. Rex Begonia Also known as: Begonia x rex hybrida
41. Rhapidophyllum histrix Also known as: Needle Palm
42. RHAPIS Also known as: Lady Palm
43. Rhapis excelsa Also known as: Bamboo Palm, Broad-leaved Lady Palm, Ground Rattan
44. Rhapis subtilis Also known as: Thai Dwarf Lady Palm
45. Rhipsalidopsis gaertneri Also known as: Easter Cactus
46. RHODOCHITON Also known as: Purple Bells
47. Rhodochiton atrosanguineum Also known as: Purple Bell Vine
48. Rhododendron periclymenoides Also known as: Azaleas, Pinxterbloom
49. Rhododendron simsii Also known as: Azalea
50. Rhododendrons Also known as: rhododendron cecile
51. RHOICISSUS Also known as: Monkey Rope, Wild Grape
52. Rhoicissus capensis Also known as: Evergreen Grape Vine
53. Rhus Also known as: Sumac
54. RHYNCHOSTYLIS Also known as: Feather Duster Palm, Fox Tail Orchid
55. Ribbon Bush Also known as: Centopede Plant, Homalocladium platycladum
56. Ribbon Plant Also known as: CHLOROPHYTUM
57. Ribbon Plant Also known as: HOMALOCLADIUM
58. Rice Paper Plant Also known as: Tetrapanax papyriferus
59. RICINUS Also known as: Castor Bean
60. Ricinus communis 'Zanzibarensis' Also known as: Castor Oil Plant
61. Ripple Grass Also known as: Plantain, Snakeweed, Plantago
62. River Birch Also known as: betula nigra
63. Rivina humilis Also known as: Pigeon Berry
64. Rock Lily Also known as: Star Lily, ARTHROPODIUM
65. Rock Rose Also known as: cistus x
66. Rocket Candytuft Also known as: Bitter Candytuft, Clowns Mustard, Iberis amara
67. Rodriguezia lanceolata Also known as: Coral Orchid
68. Rosa chinensis 'Elegant Parade' Also known as: Miniature Rose
69. Rosary Vine Also known as: String of Hearts, Ceropegia woodii
70. Rose Also known as: ROSA
71. Rose Azalea Also known as: Rhododendron indicum
72. Rose Geranium Also known as: Pelargonium graveolens
73. Rose moss Also known as: PORTULACA
74. Rose of China Also known as: Hibiscus rosa sinensis hybrids
75. Rose Pin Cactus Also known as: Mammillaria zeilmanniana
76. Rosebay Also known as: Oleander, Nerium Oleander
77. Roseleaf Aralias Also known as: Polyscias guilfoylei 'Victoriae'
78. Rosemary Also known as: Rosmarinus officinalis 'Prostratus'
79. Roses Also known as: rosa x
80. Rouge Plant Also known as: Lipstick Plant, RIVINA
81. Rowing Sailor Also known as: Pedlar's Basket, Strawberry Geranium, Saxifraga stolonifera 'Harvest Moon'
82. Royal Agave Also known as: Queen Victoria Agave, Agave victoria-reginae
83. Royal Velvet Plant Also known as: Purple Velvet Plant, Gynura aurantiaca
84. Rubber Plant Also known as: Ficus elastica
85. Rubber plant/tree Also known as: Friendship tree, Jade, Money tree, Crassula
86. Rubus fruticosus Also known as: Blackberry
87. Rudbeckia Hirta Also known as: Black Eyed Susan, Gloriosa Daisy
88. Rue Also known as: ruta graveolens
89. Ruellia macrantha Also known as: Christmas Pride
90. Ruellia makoyana Also known as: Monkey Plant
91. Ruffled Fan Palm Also known as: Licuala grandis
92. RUMOHRA Also known as: Leatherleaf fern
93. Rumohra adiantiformis 'Bur' Also known as: Leather Fern
94. Ruscus aculeatus Also known as: Butcher's Broom
95. RUSSELIA Also known as: Firecracker Plant
96. Russelia equisetiformis Also known as: Coral plant
97. Russell Lupine Also known as: Lupine, Lupinus Polyphyllus
98. Ryegrass Also known as: lolium perenne