Hymenoxys cooperi (A. Gray) Cockerell

Sokoloff, Paul C., Freebury, Colin E., Hamilton, Paul B. & Saarela, Jeffery M., 2016, The " Martian " flora: new collections of vascular plants, lichens, fungi, algae, and cyanobacteria from the Mars Desert Research Station, Utah, Biodiversity Data Journal 4, pp. 8176-8176: 8176

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Hymenoxys cooperi (A. Gray) Cockerell


Hymenoxys cooperi (A. Gray) Cockerell  


Type status: Other material. Occurrence: recordNumber: 312; recordedBy: Sokoloff, Paul C.; preparations: Silica gel collection; Taxon: scientificName: Hymenoxyscooperi (A. Gray) Cockerell; kingdom: Plantae; phylum: Angiosperms; class: Eudicots; order: Asterales; family: Asteraceae; genus: Hymenoxys; specificEpithet: cooperi; taxonRank: Species; scientificNameAuthorship: (A. Gray) Cockerell; Location: continent: North America; country: United States of America; countryCode: USA; stateProvince: Utah; county: Wayne County; municipality: Hanksville; locality: Mars Desert Research Station ; verbatimLocality: Sandstone plateau immediately southwest of Mars Desert Research Station, alongside ATV trail; verbatimElevation: 1412 m; verbatimLatitude: 38°24'22.4"N; verbatimLongitude: 110°47'40.3"W; coordinateUncertaintyInMeters: 50; Identification: identifiedBy: Sokoloff, Paul C.; dateIdentified: 2015; Event: verbatimEventDate: November 24, 2014; habitat: Dry conglomerate sandstone; Record Level: institutionID: CMN; collectionID: CAN 607483; collectionCode: CAN; basisOfRecord: Preserved Specimen GoogleMaps  


This species, collected on the plateau west of MDRS, was not recorded in the previous floristic survey of the nearby San Rafael Swell Harris (1983) but there is a record of this species occurring in the Glen Canyon Recreational Area to the south ( Hill and Ayers 2009). A shorter form with fewer heads is sometimes recognized as H. cooperi var. canescens   (D.C. Eaton) K. F. Parker; however Welsh et al. (1993) did not recognize varieties in Utah, and Bierner (2006) did not recognize varieties in this species whatsoever.

Supplemental File: CAN 607483 (Suppl. material 37).