Rebutia krainziana Reineckea carnea Retinispora obtusa Rebutia margarethae Renanthera spp. Retinispora squarrosa Rebutia marsoneri Renantherella spp. Rhagodia baccata Rebutia mentosa Renealmia cernua Rhagodia baccata var. congesta Rebutia muscula Renealmia disticha Rhagodia congesta Rebutia narvaecensis Renealmia grandiflora Rhagodia drummondii Rebutia neocumingii Renealmia monostachia Rhagodia preissii Rebutia pseudodeminuta Renealmia occidentalis var. longipes Rhamnus alaternus Rebutia pulvinosa Renealmia orinocensis Rhamnus californica Rebutia pygmaea Renealmia paniculata Rhamnus caroliniana Rebutia ritteri Renealmia recurvata Rhamnus cathartica Rebutia senilis Renealmia usneoides Rhamnus catharticus Rebutia steinbachii Reseda alba Rhamnus chlorophora Rebutia steinmannii Reseda crystallina Rhamnus crenata Rebutia violaciflora Reseda luteola Rhamnus frangula Rebutia wessneriana Reseda odorata Rhamnus globosa Reevesia thyrsoidea Restio chondropetalum Rhamnus infectoria Regelia coriacea Restio tetraphyllus Rhamnus japonica Regelia cruenta Restrepia spp. Rhamnus purshiana Regelia johannis Restrepiella spp. Rhamnus saxatilis Rehderodendron macrocarpum Restrepiopsis spp. Rhamnus thea Rehmannia angulata Retama monosperma Rhamnus theezans Rehmannia elata Retama raetam Rhamnus utilis Rehmannia glutinosa Retama raetam subsp. raetam Rhaphanus sativus Reichardia tingitana Retama sphaerocarpa Rhaphidophora cryptantha Reichenbachanthus spp. Retinispora juniperoides Rhaphidophora decursiva
Rebutia krainziana Rebutia margarethae Rebutia marsoneri Rebutia mentosa Rebutia muscula Rebutia narvaecensis Rebutia neocumingii Rebutia pseudodeminuta Rebutia pulvinosa Rebutia pygmaea Rebutia ritteri Rebutia senilis Rebutia steinbachii Rebutia steinmannii Rebutia violaciflora Rebutia wessneriana Reevesia thyrsoidea Regelia coriacea Regelia cruenta Regelia johannis Rehderodendron macrocarpum Rehmannia angulata Rehmannia elata Rehmannia glutinosa Reichardia tingitana Reichenbachanthus spp. Reineckea carnea Renanthera spp. Renantherella spp. Renealmia cernua Renealmia disticha Renealmia grandiflora Renealmia monostachia Renealmia occidentalis var. longipes Renealmia orinocensis Renealmia paniculata Renealmia recurvata Renealmia usneoides Reseda alba Reseda crystallina Reseda luteola Reseda odorata Restio chondropetalum Restio tetraphyllus Restrepia spp. Restrepiella spp. Restrepiopsis spp. Retama monosperma Retama raetam Retama raetam subsp. raetam Retama sphaerocarpa Retinispora juniperoides Retinispora obtusa Retinispora squarrosa Rhagodia baccata Rhagodia baccata var. congesta Rhagodia congesta Rhagodia drummondii Rhagodia preissii Rhamnus alaternus Rhamnus californica Rhamnus caroliniana Rhamnus cathartica Rhamnus catharticus Rhamnus chlorophora Rhamnus crenata Rhamnus frangula Rhamnus globosa Rhamnus infectoria Rhamnus japonica Rhamnus purshiana Rhamnus saxatilis Rhamnus thea Rhamnus theezans Rhamnus utilis Rhaphanus sativus Rhaphidophora cryptantha Rhaphidophora decursiva