Cryptothallus

Cryptothallus is a previously recognized genus of liverworts in the family Aneuraceae. The plants are small, and are white to pale green as a result of lacking chlorophyll. This feature led to the creation of a separate genus.[1] The morphology of species assigned to Cryptothallus is very similar to that of Aneura. As a result, Karen Renzaglia in 1982 suggested that the only species then placed in the genus, Cryptothallus mirabilis, may be considered "merely as an achlorophyllous species of Aneura."[2] Wickett and Goffinet argued the same position on the basis of sequences of nuclear, mitochondrial, and plastid DNA, and moved Cryptothallus mirabilis to Aneura.[3] A 2010 molecular phylogenetic study confirmed the position of Cryptothallus within Aneura.[4] This was accepted in the 2016 world checklist of hornworts and liverworts.[5]

Species

Two species were formerly placed in the genus.[5]

  • Cryptothallus mirabilis Malmb., now a synonym of Aneura mirabilis (Malmb.) Wickett & Goffinet
  • Cryptothallus hirsutus H.A.Crum, now a synonym of Aneura crumii L.Söderstr.

References
  1. Crum, Howard; James Bruce (1996). "A new species of Cryptothallus from Costa Rica". The Bryologist. 99 (4): 433–438. doi:10.2307/3244107. JSTOR 3244107.
  2. Renzaglia, Karen S. (1982). A comparative developmental investigation of the gametophyte generation in the Metzgeriales (Hepatophyta). Bryophytorum Bibliotheca. Vol. 24. Vaduz: J. Cramer.
  3. Wickett, N. J.; B. Goffinet (2008). "Origin and relationships of the myco-heterotrophic liverwort Cryptothallus mirabilis Malmb. (Metzgeriales, Marchantiophyta)". Botanical Journal of the Linnean Society. 156 (1): 1–12. doi:10.1111/j.1095-8339.2007.00743.x.
  4. Preussing, M.; Olsson, S.; Schäfer-Verwimp, A.; Wickett, N.J.; Wicke, S.; Quandt, D. & Nebel, M. (2010). "New insights in the evolution of the liverwort family Aneuraceae (Metzgeriales, Marchantiophyta), with emphasis on the genus Lobatiriccardia". Taxon. 59 (5): 1424–1440. doi:10.1002/tax.595009.
  5. Söderström, Lars; Hagborg, Anders; von Konrat, Matt; Bartholomew-Began, Sharon; Bell, David; Briscoe, Laura; Brown, Elizabeth; Cargill, D. Christine; da Costa, Denise Pinheiro; Crandall-Stotler, Barbara J.; Cooper, Endymion; Dauphin, Gregorio; Engel, John; Feldberg, Kathrin; Glenny, David; Gradstein, S. Robbert; He, Xiaolan; Hentschel, Joern; Ilkiu-Borges, Anna Luiza; Katagiri, Tomoyuki; Konstantinova, Nadezhda A.; Larraín, Juan; Long, David; Nebel, Martin; Pócs, Tamás; Puche, Felisa; Reiner-Drehwald, Elena; Renner, Matt; Sass-Gyarmati, Andrea; Schäfer-Verwimp, Alfons; Segarra-Moragues, José; Stotler, Raymond E.; Sukkharak, Phiangphak; Thiers, Barbara; Uribe, Jaime; Váňa, Jiří; Wigginton, Martin; Zhang, Li; Zhu, Rui-Liang (2016). "World checklist of hornworts and liverworts". PhytoKeys (59): 1–828. doi:10.3897/phytokeys.59.6261. ISSN 1314-2003. PMC 4758082. PMID 26929706.


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