Zoopsis bicruris
Common names
Liverwort
Biostatus
Native
Current conservation status
The conservation status of the New Zealand hornwort and liverwort flora is reassessed using the New Zealand Threat Classification System (NZTCS). A full list is presented, along with a statistical summary and brief notes on the most important changes. This list replaces all previous NZTCS lists for New Zealand hornworts and liverworts which previously had been part of a generic bryophyte conservation status assessment that included mosses. Authors: P.J. de Lange, D. Glenny, K. Frogley, M.A.M. Renner, M. von Konrat, J.J. Engel, C. Reeb and J.R. Rolfe.
Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.
2020 | At Risk – Naturally Uncommon
Category
Non-vascular
Structural class
Liverworts
Detailed description
Diocous, creeping, much-branched, glossy yellow-green matted plants. Shoots 8-10 x 0.41-0.45 mm, apex acute. Stems broad, flat, plano- to biconvex, 0.38-0.40 mm wide. Cells of dorsal surface in two rows, 210-250 x 130-150 x 158-168 microns. Ventral surface cells in 4 rows, central 2 with cells 47-88 x 40-70 x 35-43 microns; outer 2, 95-100 x 53-68 x 40-58 microns. Cells of central strand 9, thin-walled 18-65 x 18-28 microns. Leaves distant, bifid; leaf lobes unicellular, 42-88 x 26-41 microns, ovoid, without oil bodies or chloroplasts. Underleaves vestigial, bifid. Oil bodies of stem cells absent or 1-2 per cell, 6 microns diam., spherical, granular, pale grey. Oil bodies of leaf lobes 6-10 per cell, 5-7 microns diam., spherical, granular. Androecia unknown. Gynoecia on ventral branch 0.5 mm long. Perianth cylindrical 1.4 x 0.41 mm, with 13 teeth, 100-150 microns long. Seta 1.6 mm. Capsule 0.54 x 0.30 mm, in 2 concave segments 0.6 x 0.45 mm, 20 microns thick. Spores 13-14 microns diam. Elaters 100-200 x 9-12 microns.
Distribution
Endemic. South Island, West Coast, Stockton Plateau, Te Kuha Ridge, Paparoa National Park, Mt Te Kinga, Mt Brown
Substrate details
Terricolous on lignin-derived humus within dark cavities under trees and also saxicolous on dark, constantly damp rock wall overhangs
Threats
Recently (2006) described and so undoubtedly undercollected and poorly known. Indications are that it may be better rated Sparse
Detailed taxonomy
Genus
Family
Synonyms
None (first described in 2006)
Endemic family
No
Ecology
Fruiting
October
Other information
Previous conservation status
The conservation status of the New Zealand hornwort and liverwort flora is reassessed using the New Zealand Threat Classification System (NZTCS). A full list is presented, along with a statistical summary and brief notes on the most important changes. This list replaces all previous NZTCS lists for New Zealand hornworts and liverworts which previously had been part of a generic bryophyte conservation status assessment that included mosses. Authors: P.J. de Lange, D. Glenny, K. Frogley, M.A.M. Renner, M. von Konrat, J.J. Engel, C. Reeb and J.R. Rolfe.
Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.
2009 | Range Restricted
Referencing and citations
References and further reading
Renner, M.A.M.; Brown, E.A.; Glenny D.S. 2006: Two new Zoopsis species and their relationships to other zoopsids (Jungermanniopsida: Lepidoziaceae). Journal of Bryology 28: 331-344.
Attribution
Fact Sheet Prepared for NZPCN by: P.J. de Lange (5 October 2007). Description adapted from Renner et al (2006)