Asplenium flaccidum subsp. haurakiense Brownsey

Caption:

Details

Name scientific

Asplenium flaccidum subsp. haurakiense Brownsey, New Zealand J. Bot. 15: 70 (1977)

Preferred name

Asplenium flaccidum subsp. haurakiense Brownsey

Taxonomy reference

Shepherd, L.D.; Perrie, L.R.; Brownsey, P.J. 2008: Low-copy nuclear DNA sequences reveal a predominance of allopolyploids in a New Zealand Asplenium fern complex. Molecular Phylogenetics and Evolution 49: 240–248.

Biostatus

Origin

Occurrence

Georegion

Schema

Biostatus source

Comment

Endemic

Wild

New Zealand

Political Region

Nomenclature

Authors

Brownsey

Original authors

Brownsey

Publication place

Brownsey, P.J. 1977: A taxonomic revision of the New Zealand species of Asplenium. New Zealand Journal of Botany 15(1): 39–86.

Year published

1977

Publication page

Nomenclatural code

ICN

Basionym

Asplenium flaccidum subsp. haurakiense Brownsey

Taxonomic rank

subsp.

Canonical form

Asplenium flaccidum subsp. haurakiense

Etymology

haurakiense (Latin) – from the Hauraki Gulf, North Island, New Zealand.

Typification

Holotype: Oneroa Beach, Waiheke Island, Auckland, P.J. Brownsey NZ 894, 1 Sept. 1974, CHR 308926 (on two sheets)!; isotype WELT P009942!

Classification

Kingdom

Plantae

Phylum

Tracheophyta

Class

Polypodiopsida

Order

Polypodiales

Family

Aspleniaceae

Genus

Asplenium

Species

flaccidum

Synonyms

Asplenium haurakiense (Brownsey) Ogle

Descriptions

Brownsey, P.J. 1977: A taxonomic revision of the New Zealand species of Asplenium. New Zealand Journal of Botany 15(1): 39–86.

Asplenium flaccidum subsp. haurakiense Brownsey

Description

Rhizome bearing ovate scales with very thick cell walls. Stipes 5-12 cm long, erect, firm, bearing narrowly to broadly ovate scales with very thick cell walls (Fig. 24F-I). Laminae oblong to elliptic, 10-30 × 4-15 cm, stiff, erect. Pinnae 5-12 pairs, linear to narrowly ovate, 20-80 × 8-16 mm. Pinnules oblong and obtuse to linear and acute, up to 7 × 2 mm. Basal acroscopic pinnule frequently much longer than that next to it, up to 4 cm long, and itself pinnatifid. Sori 2-7 mm long. Spores (38)43-49(54) mcm long, (20)26-31(38) mcm wide (10 populations); perispore sometimes winged, usually lacking ridges (Fig. 29 O-P). Plant of coastal rocks.

Diagnosis

Rhizoma paleis ovatis cum parietibus cellularum crassissimis vestitum. Stipes 5-12 cm longus, erectus, firmus, paleis anguste vel late ovatis cum parietibus cellularum crassissimis vestitus (Fig. 24F-I). Lamina oblonga vel elliptica, 10-30 × 4-15 cm rigida, erecta. Pinnae 5-12 jugatae, lineares vel anguste ovatae, 20-80 × 8-16 mm. Pinnulae oblongae obtusaeque vel lineares acutaeque, usque ad 7 × 2 mm. Pinnula basalis acroscopica multo longior quam pinnula vicina, usque ad 4 cm longa, pinnatifida. Sori 2-7 mm longi. Sporae (38)43-49(54) mcm longae, (20)26- 31(38) mcm latae; perisporae interdum alatae, plerumque non cristatae. Numerus somaticus chromosomatum 144; in meiosi paria 72 observantur. Habitat in rupibus orae.

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