Trebouxia sp. 2

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. 2

Trebouxia sp. 2 [ T. cf. gelatinosa Ahm./ T. cf. aggregata (Arch.) Gärtner]

Materials

Type status: Other material. Occurrence: recordNumber: 249; 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: Vicinity of the Mars Desert Research Station, Hanksville, Utah 500 m, radius of "hab"; verbatimElevation: 1371 m; verbatimLatitude: 38°24'23.2"N; verbatimLongitude: 110°47'31.1"W; coordinateUncertaintyInMeters: 50; Identification: identifiedBy: Hamilton, Paul B.; dateIdentified: 2016; Event: verbatimEventDate: November 17, 2014; habitat: Sandstone; Record Level: institutionID: CMN; collectionID: CANA 117864; collectionCode: CANA, UTC; basisOfRecord: Dried Specimen 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 elliptical to spherical, 7-21.0 μm in diameter (Fig. 7 a-f). In culture cells were spherical, up to 19-22 μm in diameter and the cell wall sheath was <0.5 μm. Chloroplast large, plate-like to lobed, covering most of the cell. One pyrenoid present, at times difficult to distinguish. In the natural population, the cell wall sheath was <1.5 μm. Colonies of daughter cells tightly packed, forming wedge-shaped colonies in spherical to elliptical clusters. This was found in two lichen species ( Acarospora strigata and Lecanora cf. garovaglii ) forming a fine linear layer 5-100 μm thick, approximately 75-100 μm below the lichen surface.