Cololejeunea cardiocarpa
Common name
Liverwort
Synonyms
Lejeuna cardiocarpa Mont.
Family
Lejeuneaceae
Flora category
Non-vascular – Native
Endemic taxon
No
Endemic genus
No
Endemic family
No
Structural class
Liverworts
NVS code
The National Vegetation Survey (NVS) Databank is a physical archive and electronic databank containing records of over 94,000 vegetation survey plots - including data from over 19,000 permanent plots. NVS maintains a standard set of species code abbreviations that correspond to standard scientific plant names from the Ngä Tipu o Aotearoa - New Zealand Plants database.
COLCAR
Current conservation status
- Conservation status of New Zealand mosses, 2014 (PDF, 583.87 kB)
The conservation status of 109 New Zealand moss taxa was assessed using the New Zealand Threat Classification System (NZTCS). Four taxa and one undescribed entity that were not included in previous assessments have been added to the list. The conservation status of only two taxa has changed in this assessment. A full list is presented, along with a statistical summary and brief notes on the changes. This list replaces all previous NZTCS lists for mosses. Authors: Jeremy R. Rolfe, Allan J. Fife, Jessica E. Beever, Patrick J. Brownsey and Rodney A. Hitchmough.
- Conservation status of New Zealand hornworts and liverworts, 2014 (PDF, 695.44 kB)
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: Peter J. de Lange, David Glenny, John Braggins, Matt Renner, Matt von Konrat, John Engel, Catherine Reeb and Jeremy Rolfe.
Source: NZTCS and licensed by DOC for reuse under the Creative Commons Attribution 4.0 International licence.
2009 | Data Deficient | Qualifiers: OL, SO
Previous conservation status
2004 | Threatened – Nationally Critical
Distribution
Indigenous. Known in New Zealand from a single gathering made from the Alderman Islands. Also U.S. A., S.E. Asia, Pacific, Australia and Africa.
Detailed description
Plants small, consisting of isolated stems appressed to the substrate. Shoots usually 600–800 µm wide. Stems are slender, c. 34–36 µm wide, producing small fascicles of rhizoids near and slightly below the base of each leaf. The leaves are flat when wet or dry, closely appressed to the substrate, ovate, widely spreading, somewhat imbricate, the dorsal base somewhat overlapping the stem. The lobe is c.330–380 µm long by 225–245 µm wide, with both margins slightly curved to nearly straight, with the apex blunt to rounded, and the base strongly narrowed. The apex of mature and well developed leaves is tipped with a group of hyaline fingerlike empty cells (these being c.9–14 × 30–46 µm). The lobule is inflated, broadly ellipsoidal, strongly constricted at the base, averaging c.0.35–0.4× as long as the lobe, 120–150 µm long × 120–135 µm wide; keel convex, barely crenulate because of the convex cells, lobule apex marked by an obtuse 1-celled tooth; midway between this tooth and the keel is an elongate 2-celled apical tooth c.38 µm long. All cells are of one type, thin-walled and with small trigones. The cells are 13–15(–18) µm diameter near apex and on margin and (12)–16–17 × 17–22 µm medially. Oil bodies of the New Zealand material (2–)3–7 per cell, sub spherical in leaf cells and 2–3 µm diameter, coarsely granular.
Fruiting
Fruits have not been seen in New Zealand
Threats
Probably not threatened. Listed because currently it is known from New Zealand only as a single, fragmentary specimen collected from the Alderman Islands. As this species is very small and easily overlooked it best qualifies as Data Deficient. There are no obvious threats to this species at its sole known New Zealand location, which is a Nature Reserve with permit only access. This species needs to be looked for elsewhere in northern New Zealand.
Substrate
Epiphyllous. Recorded once from pohutukawa (Metrosideros excelsa Sol ex Gaertn.) leaves
Attribution
Fact sheet prepared for NZPCN by P.J. de Lange (30 October 2006). Description adapted from Braggins (1999).
References and further reading
Braggins, J.E. 1999: Cololejeunea cardiocarpa (Lejeuneaceae) a new hepatic record in New Zealand. New Zealand Journal of Botany 37: 79-82.
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Cololejeunea cardiocarpa Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/cololejeunea-cardiocarpa/ (Date website was queried)