The " Martian " flora: new collections of vascular plants, lichens, fungi, algae, and cyanobacteria from the Mars Desert Research Station, Utah Author Sokoloff, Paul C. Author Freebury, Colin E. Author Hamilton, Paul B. Author Saarela, Jeffery M. text Biodiversity Data Journal 2016 4 8176 8176 http://dx.doi.org/10.3897/BDJ.4.e8176 journal article http://dx.doi.org/10.3897/BDJ.4.e8176 1314-2828--8176 Opuntia basilaris var. basilaris Engelm. & J.M. Bigelow Materials Type status: Other material . Occurrence: recordNumber: 272; recordedBy: Sokoloff, Paul C. ; preparations: Silica gel collection; Taxon: scientificName: OpuntiabasilarisEngelm. & J.M. Bigelowvar.basilaris; kingdom: Plantae; phylum: Angiosperms; class: Eudicots; order: Caryophyllales; family: Cactaceae; genus: Opuntia; specificEpithet: basilaris; infraspecificEpithet: basilaris; taxonRank: Variety; scientificNameAuthorship: Engelm. & J.M. Bigelow; Location: continent: North America; country: United States of America ; countryCode: USA; stateProvince: Utah; county: Wayne County; municipality: Hanksville; locality: Mars Desert Research Station ; verbatimLocality: Seasonally wet stream crossing on Cow Dung Road, 1.6 km northeast of Mars Desert Research Station; verbatimElevation: 1371 m ; verbatimLatitude: 38°25'55.39"N ; verbatimLongitude: 110°47'30.2"W ; coordinateUncertaintyInMeters: 50; Identification: identifiedBy: Sokoloff, Paul C. ; dateIdentified: 2015; Event: verbatimEventDate: November 22, 2014 ; habitat: Desert slopes; Record Level: institutionID: CMN; collectionID: CAN 607488; collectionCode: CAN, UTC ; basisOfRecord: Preserved Specimen Notes This species was common along the banks of a seasonally wet stream crossing due northeast of MDRS (Fig. 32). This species was previously recorded from the nearby San Rafael Swell as Opuntia basilaris (without infraspecific rank) ( Harris 1983 ). Morphological variability and hybridization have hindered infraspecific delineation in this species, and many named varieties appear in the literature, including four in Welsh et al. (1993) , and a different set of four in Pinkava (2003) ; here we follow the latter treatment. Supplemental File: CAN 607488 (Suppl. material 43).