Rebutia flower Sanseveria Stapelia with atypical flower Lady planter with anacampseros Echeveria gibbiflora var. carunculata Pseudolithos flower macro Ceropegia stapliformis atypical flower - side view Echeveria lilacina Superbum Pseudolithos flowers closeup Ceropegia africana ssp barkleyi flowers Rhytidocaulon flowers and buds Rhytidocaulon flower close up Rhytidocaulon flower Ceropegia stapiliformis atypical flower - macro vi… Ceropegia stapiliformis atypical flower - top view Ceropegia ampliata flower bud Astrophytum myriostigma quadricostal Ceropegia linearis ssp. debilis flower Leuchtenbergia principis in flower Ceropegia ampliata flower Ceropegia ampliata flower - top view macro Ceropegia ampliata flowers Ceropegia stapiliformis flower macro Ceropegia stapiliformis flower - side view Ceropegia stapiliformis flower 1 Ceropegia armandii flower huernia plowesii flower Echidnopsis squamulata flower Duvalia elegans Ariocarpus fissuratus flower Ariocarpus fissuratus in bloom Euphorbia francoisii - Grigsby Clone 2 Neoporteria flowers Mammilaria flowers Astrophytum Super Kaboda flower Melocactus metanzanus flower Ortegocactus macdougalii Uncarina roesaliana Ibervilla cathartica Copiapoa hypogaea Astrophytum myriostigma quadricostal Crassula x 'Morgan's Beauty' Euphorbia francoisii variations Cactus flowers Adenium boehmianum Pachypodium baronii v baronii flower Othonna clavifolia flower Organ Pipe Cactus tangle Euphorbia leaves Euphorbia hybrid Pseudolithos in bud and bloom x Luckhoffia Duvalia polita Pterodiscus Senecio deflersii flower Cotyledon elisae Pachypodium bicolor Claret cup flowers Ceraria fructiculosa flower Ceropegia rendallii Ceropedia radicans Ceropegia multiflora ssp tentaculata Ceropegia rupicola Trailing Red – National Arboretum, Washington DC