Trebouxia sp. 4

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

Trebouxia sp. 4

Trebouxia sp. 4 [T. cf. usneae (Hildreth & Ahm.) Gärtner / T. cf. potteri Ahm. ex. Gärtner]

Materials

Type status: Other material. Occurrence: recordNumber: 290; recordedBy: Sokoloff, Paul C.; Taxon: kingdom: Plantae; phylum: Chlorophyta; class: Trebouxiophyceae; order: Trebouxiales; family: Trebouxiaceae; genus: Trebouxia; Location: continent: North America; country: United States of America; countryCode: USA; stateProvince: Utah; county: Wayne County; municipality: Hanksville; locality: Mars Desert Research Station ; verbatimLocality: "Comm check" hill, 1.7 km north of Mars Desert Research Station, just west of Cow Dung Road; verbatimElevation: 1371 m; verbatimLatitude: 38°25'3.15"N; verbatimLongitude: 110°46'54.59"W; coordinateUncertaintyInMeters: 50; Identification: identifiedBy: Hamilton, Paul B.; dateIdentified: 2016; Event: verbatimEventDate: November 22, 2014; habitat: Sandstone at crest of Artemisia and Ephedra dominated hilltop; Record Level: institutionID: CMN; collectionID: CANA 117865; collectionCode: CANA; basisOfRecord: Dried Specimen

Notes

Cells spherical to weakly elliptical, 12-15.0 μm in diameter (Fig. 4 e-f). Chloroplast lobed, covering most of the cell. One to many pyrenoids present, at times difficult to distinguish. In the natural population the cell wall sheath was thin <0.8 μm. Small colonies of daughter cells tightly packed in forming broad wedge-shaped colonies in spherical to elliptical clusters. Endolithic, scattered with Gloeocapsa sp. 0.1-0.4 mm below the sandstone surface.