Species
Callitriche petriei subsp. petriei
Etymology
Callitriche: From the Greek kalli 'beautiful' and thrix 'hair', referring to the beautiful stems
petriei: Named after Donald Petrei (1846 -1925), Otago botanist
Common Name(s)
Petrie's starwort
Current Conservation Status
2012 - Not Threatened
Conservation status of New Zealand indigenous vascular plants, 2012
The conservation status of all known New Zealand
vascular plantVascular plant:
A plant that possesses specialised conducting tissue (xylem and phloem). This includes flowering plants, conifers and ferns but excludes mosses, algae, lichens and liverworts.
Taxa:
Taxonomic groups. Used to refer to a group at any level e.g., genus, species or subspecies.
at the rank of species and below were reassessed in 2012 using the New Zealand Threat Classification System (NZTCS). This report includes a statistical summary and brief notes on changes since 2009 and replaces all previous NZTCS lists for vascular plants. Authors: Peter J. de Lange, Jeremy R. Rolfe, Paul D. Champion, Shannel P. Courtney, Peter B. Heenan, John W. Barkla, Ewen K. Cameron, David A. Norton and Rodney A. Hitchmough. File size: 792KB
Previous Conservation Status
2009 - Not Threatened
2004 - Not Threatened
Authority
Callitriche petriei R.Mason subsp. petriei
Family
Plantaginaceae
Flora Category
Vascular - NativeNative:
Naturally occurring in New Zealand (i.e., not introduced accidentally or deliberately by humans).
Structural Class
Dicotyledonous Herbs other than Composites
Synonyms
None
Distribution
EndemicEndemic:
Unique or confined to a place or region, found naturally nowhere else.
Habitat
Coastal to alpine in damp muddy ground, lake, pond and tarn turf, in damp temporary pools, puddles and soaks within forest and scrub. Sometimes found permanently submerged.
Features
Diminutive, dioeciousDioecious:
Having male and female flowers on separate plants of the same species.
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Perennial:
A plant lasting for three seasons or more
Ascending:
Growing obliquely upward.
Spathulate:
Spatula or spoon-shaped, a rounded blade tapering gradually to the base.
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Orbicular:
Almost or approximately circular.
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Midrib:
The central or principal vein of a leaf or pinna of a fern.
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Lateral:
On or at the side.
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Alternate:
Attached singly at each node but changing from one side of a stem to the other.
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Elliptic:
Broadest at the middle
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Similar TaxaTaxa:
Taxonomic groups. Used to refer to a group at any level e.g., genus, species or subspecies.
Differs from C. petriei subsp. chathamensis by its dioeciousrather than monoeciousMonoecious:
Having male and female flowers on the same plant of the same species.
Flowering
November - January
Fruiting
January - February
Propagation Technique
Easily grown from rooted pieces and fresh seed, A delicate plant that is unlikely to be widely cultivated.
Threats
Not Threatened
Chromosome No.
2n = 20
EndemicEndemic:
Unique or confined to a place or region, found naturally nowhere else.
Taxon:
A taxonomic group. Used to refer to a group at any level e.g., genus, species or subspecies.
Yes
EndemicEndemic:
Unique or confined to a place or region, found naturally nowhere else.
Genus:
A taxonomic rank of closely related forms that is further subdivided in to species (plural = genera). In a scientific name (e.g., Sicyos australis), the first word is the genus, the second the species.
No
EndemicEndemic:
Unique or confined to a place or region, found naturally nowhere else.
No
Life Cycle and Dispersal
Mericarps possibly by water and attachment (Thorsen et al., 2009).
References and further reading
Thorsen, M. J.; Dickinson, K. J. M.; Seddon, P. J. 2009. Seed dispersal systems in the New Zealand flora. Perspectives in Plant Ecology, Evolution and Systematics Systematics :
The study of taxonomy, phylogenetics, and taxagenetics.
This page last updated on 23 Sep 2014