Callitriche antarctica Engelm. ex Hegelm.

Details

Name scientific

Callitriche antarctica Engelm. ex Hegelm. (1867)

Preferred name

Callitriche antarctica Engelm. ex Hegelm.

Taxonomy reference

Lansdown, R.V. 2022: The genus Callitriche (Plantaginaceae, Callitricheae) in Australasia and Oceania. Phytotaxa 547(3): 243–284.

Biostatus

Origin

Occurrence

Georegion

Schema

Biostatus source

Comment

Indigenous, non-endemic

Wild

New Zealand

Political Region

Lansdown, R.V. (2022)

Nomenclature

Original authors

Hegelm.

Authors

Engelm. ex Hegelm.

Year published

1867

Publication page

9: 20

Nomenclatural code

ICN

Basionym

Callitriche antarctica Engelm. ex Hegelm.

Taxonomic rank

species

Canonical form

Callitriche antarctica

Classification

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Lamiales

Family

Plantaginaceae

Genus

Callitriche

Species

antarctica

Descriptions

Allan, H.H. 1961: Flora of New Zealand. Vol. I. Indigenous Tracheophyta: Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledones. Government Printer, Wellington.

Callitriche antarctica Engelm. ex Hegelm.

Description

Stems slender, creeping, branched, ± succulent, up to ± 15 cm. long, us. forming patches on mud. Lvs on petioles 2-3 mm. long; lamina ± fleshy, 3-6-(10) × 1-2-3 mm., narrow- to oblong-spathulate, rounded at apex. Fr. broad-oblong to suborbicular, ± turgid, 1-1·5 × 1-1·5 mm.; lobes rounded to subacute, commissural groove shallow.

Dawson, M.I. 2008: Index of chromosome numbers of indigenous New Zealand vascular plants.

Callitriche antarctica Engelm. ex Hegelm.

Description

n = 20

Description

2n = 40

Webb, C.J.; Sykes, W.R.; Garnock-Jones, P.J. 1988: Flora of New Zealand. Vol. IV. Naturalised Pteridophytes, Gymnosperms, Dicotyledons. Botany Division DSIR, Christchurch.

Callitriche antarctica Engelm. ex Hegelm.

Description

Monoecious herb, palustral or ± terrestrial on wet ground. Stems thick, creeping below with ascending branches to 10 cm high. Lvs spathulate, thick, 2.5-10 × 1.5-4.8 mm, entire, 3-nerved, sometimes with free veins; base scarious and connate. Fls solitary, ♂ in upper axils, ♀ in lower, ebracteate or bracts falling early. Filaments to 1.3 cm long, tapering from broad base. Style 1.4-3.2 mm long, persistent. Fr. 0.8-1.1 × 1.1-1.5 mm, not keeled or winged; faces slightly convex; commissural groove open and shallow.