Taxonomic revision of Portulacaceae in Cuba

• Published in: Brittonia 2021, Vol.73 (3), p.274-303
• Main Authors: García-Beltrán, José Angel, Barrios, Duniel, Bécquer, Y Eldis R.
• Format: Article
• Language: English
• Subjects: Biomedical and Life Sciences; Descriptions; Geographical distribution; Identification keys; Indigenous species; Lectotypes; Life Sciences; Original Research; Plant Anatomy/Development; Plant Ecology; Plant Physiology; Plant Sciences; Plant Systematics/Taxonomy/Biogeography; Portulaca; Portulaca halimoides; Portulacaceae; Revisions; Taxonomic revision; Taxonomy
• ISSN: 0007-196X; 1938-436X
• DOI: 10.1007/s12228-021-09653-0

A taxonomic revision to Portulaca (Portulacaceae) in Cuba is presented. Fourteen species are recognized: 11 native (one endemic), one naturalized, and two cultivated. Portulaca avinoamii García-Beltrán is proposed as a new name for P. tuberculata (Danin & H.G. Baker) Danin (non P. tuberculata León). The lectotypes for 21 names of Portulaca are designated: P. biloba , P. brevifolia , P. cubensis , P. elatior , P. erecta , P. gagatosperma , P. grandiflora , P. halimoides var. brevipilosa , P. martinicensis , P. microphylla , P. nana , P. paucistaminata , P. phaeosperma , P. poliosperma , P. poliosperma var. bistigmatata , P. poliosperma var. cubensis , P. poliosperma var. minor , P. procumbens , P. rubricaulis, P. teretifolia and P. umbraticola . The second step lectotype of P. coronata is designated. Four new synonyms for P. biloba are presented: Portulaca poliosperma var. cubensis , P. poliosperma var. tristigmatata , P. poliosperma var. bistigmatata and P. cinerea , and one new synonym for P. pilosa is proposed: Portulaca halimoides var. brevipilosa . An identification key for all species is presented, and updated descriptions, nomenclatural information, geographic distributions, citation of all specimens examined, and habitat descriptions for all the species are included here.