Daltonia Hook. & Taylor

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Etymology

Named after James Dalton (1764–1843), a British clergyman and botanist.

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Description

Autoicous, synoicous, dioicous(?). Plants small to medium-sized, slender, usually tufted. Stems loosely erect, simple or branched, tomentose, regularly spirally inserted. Leaves ovate to linear-lanceolate, keeled abaxially along the costa; base tapering; margin entire; costa thin, single, often extending almost to the apex. Laminal cells epapillose, thin-walled, oval-rhomboidal; basal cells longer; marginal cells linear, forming a conspicuous border, narrowed above to 1 cell wide. Rhizoids reddish brown.

Calyptra mitrate, with a deeply fringed base. Seta rough distally. Capsules erect to inclined, oval to oval-oblong; annulus absent; operculum rostrate, long-sulcate. Peristome: exostome teeth linear-subulate, reflexed when moist, papillose, with a zig-zag median line; endostome segments as long as the teeth, papillose, keeled; cilia absent. 

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Habitat and Distribution

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A mainly tropical to subtropical genus of about 50 species in South America, Africa and Asia and South America; two species in eastern Australia.

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Nomenclature And Typification

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Daltonia Hook. & Taylor, Muscologia Britannica 80 (1818), nom. cons.;

Type: D. splachnoides (Sm.) Hook. & Taylor

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Bibliography

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Streimann, H. (1997). Taxonomic Studies on Australian Hookeriaceae (Musci). 1. Introduction, and the genera Achrophyllum, Callicostella, Chaetomitrium and Cyclodictyon. Journal of the Hattori Botanical Laboratory 82: 281–304.

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Source

Streimann, H. (2012). Australian Mosses Online 11. Hookeriaceae: [Chaetomitrium]. Australian Biological Resources Study, Canberra. Version 19 April 2012.

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Taxonomy from

  • Kingdom: Plantae
  • Phylum: Bryophyta
  • Class: Bryopsida
  • Subclass: Bryidae
  • Order: Hookeriales
  • Family: Daltoniaceae
  • Genus: Daltonia

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© Copyright Commonwealth of Australia, 2023
Last updated: System; Jul 21, 2022 12:35 Status: Partial

Editor(s) - Pat M. McCarthy (2012)

Author - Heinar Streimann

Acknowledgements -

Contributors -

Cite this profile as: Heinar Streimann (2022) Daltonia. In: Flora of Australia. Australian Biological Resources Study, Department of Climate Change, Energy, the Environment and Water, Canberra. https://profiles.ala.org.au/opus/boa/profile/Daltonia [Date Accessed: 05 April 2025]