a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, r, s, t, u, v, w, x, y, z,

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  • XAAC - Asteraceae - Xanthium strumarium var. canadense - Xanthium acerosum Greene
  • XAAJ - Parmeliaceae - Ajo xanthoparmelia lichen - Xanthoparmelia ajoensis (T. Nash) Egan
  • XAAL - Oxalidaceae - Oxalis albicans ssp. albicans - Xanthoxalis albicans (Kunth) Small
  • XAAL2 - Teloschistaceae - - Xanthoria alaskana J. W. Thomson
  • XAAL3 - Teloschistaceae - - Xanthoria alfredi S. Kondratyuk & Poelt
  • XAAM2 - Asteraceae - Xanthium strumarium var. glabratum - Xanthium americanum Walt.
  • XAAM4 - Asteraceae - Amphiachyris amoena - Xanthocephalum amoenum Shinners
  • XAAM5 - Asteraceae - - Xanthium ambrosioides Hook. & Arn. [excluded]
  • XAAMI - Asteraceae - Amphiachyris amoena - Xanthocephalum amoenum Shinners var. intermedium Shinners
  • XAAN - Parmeliaceae - xanthoparmelia lichen - Xanthoparmelia angustiphylla (Gyelnik) Hale
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Plants: 351

Plants are living organisms belonging to the kingdom Plantae. They include familiar organisms such as trees, herbs, bushes, grasses, vines, ferns, mosses, and green algae. About 350,000 species of plants, defined as seed plants, bryophytes, ferns and fern allies, are estimated to exist currently.