in the 21st century has supported the hypothesis of Dudleya's relation to Sedum. Phylogenetic analysis has given weight to this hypothesis, concluding that Dudleya is much closer to North American members of Sedoideae than to Echeverioideae. The plant Sedum spathulifolium, which co-exists with Dudleya in Oregon and California, has been show in multiple phylogenetic reconstructions to be a sister taxon to Dudleya, although it may not be the true sister taxon, as larger samplings are needed. Berger's hypothesis of a relationship between Hasseanthus and Sedum may still prove true, as in addition to morphological similarities, the Hasseanthus-type taxa could be basal to the genus. However, no truly conclusive evidence of significant divergence within Dudleya exists, and it remains unclear which groups are basal or derived. Selected species Dudleya abramsii Dudleya abramsii subsp. abramsii – Abrams' liveforever Dudleya abramsii subsp. affinis – San Bernardino Mountains liveforever Dudleya abramsii subsp. bettinae – Betty's dudleya Dudleya abramsii subsp. calcicola – limestone dudleya Dudleya abramsii subsp. murina – Mouse-gray dudleya Dudleya abramsii subsp. setchellii – Santa Clara Valley dudleya Dudleya acuminata – Vizcaino liveforever Dudleya albiflora– White-flower liveforever Dudleya anomala – Todos Santos liveforever Dudleya anthonyi – Anthony's liveforever Dudleya attenuata – Orcutt's liveforever, tapertip liveforever Dudleya arizonica – Arizona chalk dudleya. Formerly a subspecies of Dudleya pulverulenta. Dudleya blochmaniae – Blochman's liveforever, Blochman's dudleya Dudleya brevifolia – Short-leaved liveforever, short-leaved dudleya. Formerly a subspecies of D. blochmaniae. Dudleya brittonii – Britton's dudleya, giant chalk dudleya Dudleya caespitosa – Coast dudleya, sea lettuce, sand lettuce Dudleya campanulata – Punta Banda liveforever Dudleya candelabrum – Candleholder liveforever Dudleya candida – Coronados liveforever Dudleya cedrosensis Dudleya crassifolia – Thick-leaf dudleya Dudleya cultrata – Knife-leaved liveforever, maritime succulent liveforever Dudleya cymosa – Canyon liveforever Dudleya cymosa subsp. agourensis – Agoura Hills dudleya Dudleya cymosa subsp. crebrifolia – San Gabriel River dudleya Dudleya cymosa subsp. costatifolia – Pierpoint Springs dudleya Dudleya cymosa subsp. cymosa – Coast Range dudleya Dudleya cymosa subsp. marcescens – Marcescent dudleya Dudleya cymosa. subsp. ovatifolia – Santa Monica Mountains dudleya Dudleya cymosa subsp. paniculata – Diablo range dudleya Dudleya cymosa subsp. pumila – Transverse ranges liveforever Dudleya densiflora – San Gabriel Mountains liveforever Dudleya edulis – Fingertips, lady fingers, San Diego dudleya Dudleya farinosa – Bluff lettuce, powdery liveforever, powdery dudleya Dudleya formosa – La Mision liveforever Dudleya gatesii – Gates' liveforever Dudleya gnoma – Munchkin dudleya Dudleya greenei – Greene's dudleya Dudleya guadalupensis