Riccardia dendroides (Marchantiophyta, Aneuraceae), a new alpine species in subgenus Arceoneura from Western Nelson, New Zealand

David Glenny

doi:10.7751/telopea21021

Authors

David Glenny Landcare Research, Lincoln.

DOI:

https://doi.org/10.7751/telopea21021

Keywords:

Aneuraceae, Riccardia, Arceoneura, New Zealand, new species, heteroblasty, endemic, liverwort, alpine, Riccardia prehensilis, Riccardia eriocaula. , Riccardia demkarmana, Riccardia hymenophylloides, Riccardia meagheri, Riccardia lachungensis

Abstract

A new Riccardia species sharing distinctive morphological characteristics of subgenus Arceoneura is described from a single New Zealand alpine locality. Riccardia dendroides Glenny has a large, robust habit with the pinnae evenly spaced on erect axes and dense on prostrate axes, characters shared with R. prehensilis (Hook.f. & Taylor) C.Massal. of Patagonia and the South Atlantic Islands, and R. eriocaula (Hook.) Besch. & C.Massal of New Zealand and Australia. Riccardia dendroides differs in having predominantly 2-pinnate (not 3–4-pinnate) branches; epidermal cells partly detached and collapsed (not prorate or projecting); cells inside the cylindrical stele are thick-walled as in R. prehensilis, not thin-walled as in R. eriocaula; male branches face dorsally (not ventrally); and is found in a penalpine habitat.

References

Brown EA, Braggins JE (1989) A revision of the genus Riccardia S.F.Gray in New Zealand with notes on the genus Aneura Dum. Journal of the Hattori Botanical Laboratory 66: 1–132. https://doi.org/10.18968/jhbl.66.0_1

Crandall-Stotler BJ, Bartholomew-Began SE (2007) Morphology of mosses (phylum Bryophyta). Flora of North America volume 27. http://flora.huh.harvard.edu/FloraData/001/WebFiles/fna27/FNA27-1-Morphology.htm accessed 2 Sept 2024.

Evans AW (1921) The genus Riccardia in Chile. Transactions of the Connecticut Academy of Arts and Sciences 25: 93–209. https://www.biodiversitylibrary.org/item/32397#page/171/mode/1up

Glenny D (2024a) Riccardia dimorpha sp. nov. (Hepaticophyta, Aneuraceae) from Western Nelson, New Zealand, exhibiting sexually determined morphological dimorphism, an overlooked feature of some liverworts. Telopea 27: 73–83. https://doi.org/10.7751/telopea17709

Glenny D (2024b) Riccardia sphagnicola sp. nov. (Marchantiophyta, Aneuraceae), a filamentous penalpine bog species of the New Zealand mountains, compared to six similar New Zealand species. Telopea 29: 127–147. doi:10.7751/telopea20209

Goebel K (1889) Über die jugendzustände der pflanzen. Flora 72: 1–44. https://www.biodiversitylibrary.org/item/266035#page/13/mode/1up

Hässel de Menendez GC (1972). Revision taxonomic del genero Riccardia (Hepaticae). Especies Andinopatigonicas y Subantarcticas incluyendo las islas Juan Fernandez, Malvinas, Georgias del Sur, etc. Revista del Museo Argentino de Ciencias Naturalis “Bernadino Rivadavia”, Botànica 4: 1–242.

Hewson HJ (1970) The family Aneuraceae in Australia and New Guinea. II. The genus Riccardia. Proceedings of the Linnean Society of New South Wales 95: 60–121. https://biostor.org/reference/68049

Mishler BD, de Luna E (1991) The use of ontogenetic data in phylogenetic analyses of mosses. Advances in Bryology 4: 121–167.

Müller, F. (2023) A new Riccardia (Aneuraceae, Marchantiophyta) from Myanmar. Bryophyte Diversity and Evolution 46: 51–55. https://doi.org/10.11646/bde.46.1.7

Rabeau L, Gradstein SR, Dubuisson J-Y, Nebel M, Quandt D, Reeb C (2017) New insights into the phylogeny and relationships within the worldwide genus Riccardia (Aneuraceae, Marchantiophytina). European Journal of Taxonomy 273: 1–26. https://doi.org/10.5852/ejt.2017.273

Reeb C, Bardat J (2014) Studies on African Riccardia types and related material. Cryptogamie, Bryologie 35: 47–75. https://doi.org/10.7872/cryb.v35.iss1.2014.47

Rico G (2011) Methods for cell clearing and rehydration in thalloid liverworts. Tropical Bryology 33: 12–18. https://doi.org/10.11646/bde.33.1.3

Schiffner V (1898) Expositio Plantarum in itinere suo indico annis 1893/94 suscepto collectarum speciminibusque exsiccatis distriburarum, adjectis descriptionibus novarum. Series prima: Hepaticarum partem continens. Denkschriften der Kaiserlichen Akademie der Wissenschaften, Wien. Mathematisch-naturwissenschaftliche Klasse 67: 153–203. https://www.biodiversitylibrary.org/item/88851#page/193/mode/1up

Singh D, Singh, DK (2017) Two new species of Riccardia (Aneuraceae, Marchantiophyta) from Eastern Himalaya, India with notes on the genus in Sikkim. Taiwania 62: 33‒42. https://doi.org/10.6165/tai.2017.62.33

Townsend AJ, de Lange PJ, Duffy CAJ, Miskelly CM, Molloy J, Norton DA (2008) New Zealand Threat Classification System manual. Wellington, Department of Conservation. https://www.doc.govt.nz/documents/science-and-technical/sap244.pdf

Váňa J, Engel JJ (2013) The liverworts and hornworts of the Tristan da Cunha group. Memoirs of the New York Botanical Garden 105: 1–138.

Zotz G, Wilhelm K, Becker A (2011) Heteroblasty–a review. Botanical Review 77: 109–151. https://doi.org/10.1007/s12229-010-9062-8