Acer orbum

Taxonavigation

Taxonavigation: Sapindales
Classification System: APG IV Superregnum: Eukaryota Cladus: Diaphoretickes Cladus: CAM Cladus: Archaeplastida Regnum: Plantae Cladus: Angiosperms Cladus: Eudicots Cladus: Core eudicots Cladus: Rosids Cladus: Eurosids II Ordo: Sapindales

Familia: Sapindaceae
Subfamilia: Hippocastanoideae
Tribus: Acereae
Genus: Acer
Sectio: †A. sect. Orba
Species: †Acer orbum

Name

Acer orbum LaMotte Mem. Geol. Soc. Amer., 51: 55. 20 Jun 1952

Synonyms

• Homotypic
• †Acer aequidentatum Lesquereux of MacGinitie, 1941, Carnegie Inst. Washington Pub. 534, 143, pi. 37, f. 1-4,
  • Note:"LaMotte (1952) pointed out that Lesquereux' types of "Acer" aequidentatum represent Platanaceae and, therefore, proposed the epithet orbum, based on MacGinitie's (1941) description and illustrations. Becker (1960) ignored this epithet and invalidly referred some leaves (referred to A. elwyni in the current report) to A. aequidenlalum. -Wolfe & Tanai, 1987

Type material

• Lectotype: UCMP 2283 (leaf)
  • Repository: Museum of Paleontology, University of California Berkeley, Berkeley, Alameda County, California, Unites States

• Referred material: UCMP 2284, 2284, 2286, 9018 (fruits)
  • Repository: Museum of Paleontology, University of California Berkeley, Berkeley, Alameda County, California, Unites States

Type locality

• Early Eocene, Ypresian; Ione Formation, Chalk Bluffs Flora; Independence Hill, near Colfax, Placer County, California, USA

Etymology

• None given

References

Primary references

• MacGinitie, H.D. 1941. A Middle Eocene flora from the central Sierra Nevada. Publications of the Carnegie Institution of Washington (534): 1–178, pl. 1-48. HathiTrustReference page. 
• LaMotte, R.S. (1952). Catalogue of the Cenozoic plants of North America through 1950. Geological Society of America Memoirs. Vol. 51. Geological Society of America. pp. 1–378. doi:10.1130/MEM51.Reference page. 

• Wolfe, J.A. & Tanai, T. 1987. Systematics, Phylogeny, and Distribution of Acer (maples) in the Cenozoic of Western North America. Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and Mineralogy 22(1): 1–246.  PDF Reference page.