Oxalis albicans was created in 1821.

Oxalis montana was created in 1818.

That is the correct spelling of the noun or proper noun oxalis. An oxalis is a type of perennial plant, mainly of the wood-sorrels, often classified as a weed. The proper noun is its genus Oxalis, a taxonomic group.

Oxalis is the Latin name for a Genus of over 800 Species.

Pepperwort or Water Clover (Marsilea Quadrifolia) or Oxalis (Oxalis deppei or Oxalis tetraphylla) plants that produce all four leaves.