Mnioloma novaezelandiae
Common name
Liverwort
Synonyms
The New Zealand species was first recognised in this country as Mnioloma fuscum (Lehm.) R.M.Shust.
Family
Calypogeiaceae
Flora category
Non-vascular – Native
Endemic taxon
No
Endemic genus
No
Endemic family
No
Structural class
Liverworts
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 | Sparse
Distribution
Endemic. North and South Islands
Detailed description
Plants forming brown-green mats. Shoots up to 50 mm long, 1000-1450 micrometre wide. Growth habit distinctly procumbent-pendent,branching frequent but irregular, exclusively ventral-intercalary. Stems 120-190 micrometre diameter with 10-14 cortical and 16-24 medullary cell rows, cortical cells with slightly thickened, heavily brown-pigmented cell walls, concave trigones present at angles, medullary cell walls unthickened with the exception of concave trigones at cell angles, free external wall thickened and pigmented as internal cortical cell walls, cortical stem cells rectangular, 75-93 x 25-29 micrometre. Leaves 460-690 x 430-670 micrometre, contiguous to remote, alternate, widely spreading from the stem at 60-75 degrees, ovate-oblong, rounded-triangular, ventral margin flaring slightly toward stem. margins entire but outline irregular, somewhat scalloped, unlobed, leaf-apex broadly rounded, except for the first two branch appendages, which are frequently equally trifid. Vittae and ocelli absent. Leaf insertion weakly incubous, almost longitudinal, J-shaped at antical apex though not attaining the dorsal stem midline, leaving two dorsal stem-cell rows leaf free, leave snot obscuring the stem with the dorsal surface visible along entire length. Medial cells 30-40 x 28-53 micrometre, cells of leaf base slightly larger, elongate parallel to stem 60-85 x 25-28 micrometre, marginal cells smaller than medial cells, quadrate, 19-25 x 23-25 micrometre, free external cell wall smooth, not toothed or otherwise by wall thickening or projecting cell apices. Leaf cell walls unthickened except for small concave trigones at cell angles, intermediate wall thickenings absent. underleaves 170-270 x 250-340 micrometre, reniform, distinctly wider than long, distant up to 2x stem width, inserted on 4-5 rows of ventral stem cells, margins entire, equally or somewhat unequally bilobed, with notch-like sinus, in which two slime-papillae are situated. Underleaf cells rectangular, 27-43 x 15-23 micometre, apical cells more elongate, oblong-triangular, often slightly narrowed at their apical ends, 40-53 x 17-20 micrometre, rhizoids few, produced from underleaf bases on vegetative shoots, magenta-brown, proliferating at apices, surface papillose, up to 620 microns long. Dorsal and ventral surfaces of leaves, underleaves and stem bearing dense coarse granular ornamentation, which becomes elongated and striated towards basal cells of the leaves. Oil-bodies, gemmae and caducous leaves not seen. Dioicous. Male plants not seen. Gynoecia whitish, produced terminally on very short ventral-intercalary branches, borne within axils of the underleaves; bearing 1-4 archegonia, these surrounded by two achlorophyllous, delicate bracts and a bracteole, bracts irregularly and shallowly tril-lobed 530-590 x 400-435 micrometre, incurved inwards toward each other and the bracteole and arching over the archegonia, bracteole shallowly bifid 185-245 x 135-160 micrometre.
Fruiting
Not seen
Threats
Not threatened. Listed because it is a biological sparse species.
Substrate
Terricolous, saxicolous and terricolous in montane habitats in the North Island but down to sea level in the south.
Attribution
Fact Sheet Prepared for NZPCN by P.J. de Lange (5 October 2007). Description adapted from Engel (2006) and Renner & Braggins (2006)
References and further reading
Engel, J.J. 2006: Austral Hepaticae 42: The Austral species of Mnioloma (Calypogeiaceae), together with a new species, Mnioloma novaezelandiae n.sp.. Cryptogamie, Bryologie 27(1): 111-117.
Renner, M.A.M.; Braggins, J. 2006: Hepatic records for Australia and New Zealand. Australasian Bryological Newsletter 52: 9-13
NZPCN Fact Sheet citation
Please cite as: de Lange, P.J. (Year at time of access): Mnioloma novaezelandiae Fact Sheet (content continuously updated). New Zealand Plant Conservation Network. https://www.nzpcn.org.nz/flora/species/mnioloma-novaezelandiae/ (Date website was queried)