p>Radish, Wild [Raphanus raphanistrum]
Radish, Wild [Raphanus sativus]
Radish, Wild [Raphanus sativus x raphanistrum]
Ragweed, Annual [Ambrosia artemisiifolia]
Ragweed, Tuscon Burr [Ambrosia cordifolia]
Rainforest Tree [Argyrodendron trifoliolatum]
Rainforest Tree, Semi-Evergreen [Agathis microstachya]
Ramalina menziesii [Menzies' Cartilage Lichen]
Rangiora [Brachyglottis repanda]
Ranunculus [Buttercup]
Ranunculus acris [Tall Buttercup]
Ranunculus glacialis [Glacier Buttercup]
Raphanus raphanistrum [Wild Radish]
Raphanus sativus [Wild Radish]
Raphanus sativus x raphanistrum [Wild Radish]
Ratany, Littleleaf [Krameria erecta]
Redbud Tree, Eastern [Cercis canadensis]