Pteris macilenta A.Rich.

Caption:

Details

Name scientific

Pteris macilenta A.Rich., Essai Fl. Nouv.-Zél., 82, t. 12 (1832)

Preferred name

Pteris macilenta A.Rich.

Taxonomy reference

Brownsey, P.J.; Perrie, L.R. 2021: Pteridaceae. In: Breitwieser, I. (ed.) Flora of New Zealand — Ferns and Lycophytes. Fascicle 30. Manaaki Whenua Press, Lincoln.

Linked name

Pteris macilenta A. Rich. 1832

Biostatus

Origin

Occurrence

Georegion

Schema

Biostatus source

Comment

Endemic

Wild

New Zealand

Political Region

Brownsey, P.J.; Smith-Dodsworth, J.C. (2000)

Nomenclature

Original authors

A.Rich.

Authors

A.Rich.

Publication place

Richard, A. 1832: Essai d'une Flore de la Nouvelle Zélande. In: Dumont d'Urville, J. Voyage de découvertes de l'Astrolabe. Botanique. Tastu, Paris.

Year published

1832

Publication page

82, t. 12

Nomenclatural code

ICN

Basionym

Pteris macilenta A.Rich.

Taxonomic rank

species

Canonical form

Pteris macilenta

Etymology

From the Latin macilentus (thin), a reference to the delicate fronds of this species.

Typification

Lectotype (selected by Brownsey & Perrie 2020): Nlle Zélande, Baie des Iles, Astrolabe, No. 11, Herb. Richard, P 00610503!

Classification

Kingdom

Plantae

Phylum

Tracheophyta

Class

Polypodiopsida

Order

Polypodiales

Family

Pteridaceae

Genus

Pteris

Species

macilenta

Subordinates

Vernacular names

Language of use: English

sweet fern

Synonyms

Descriptions

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

Pteris macilenta A.Rich.

Description

Rhizome very short, ascending, paleate, bearing bases of fallen stipites; stipites crowded, paleate at base. Stipes 10-30 cm. long, dark brown towards paleate base, pale brown above, smooth; paleae dark brown, linear-attenuate. Rhachis smooth, stramineous, with alt. to subopp. pinnae. Lamina 20-90 × 15-50 cm., pale green, membr., flaccid, broadly deltoid, 2-3-pinnate, minutely punctate. Veins anastomosing, at least along costules. Primary pinnae 15-30 × 10-15 cm., deltoid to ovate-lanceolate, acuminate, alt. to subopp., distant, often long-stalked. Secondary stalked, alt. to subopp., ovate, acuminate, 5-10 × 2-5 cm. Tertiary pinnae up to 4 cm. × 15 mm., ovate to narrowly ovate-oblong, acute to acuminate; lower subsessile, upper confluent; final segs acutely toothed. Fertile pinnules hardly differing in shape from sterile. Sori us. cop., rather short, along sinuses; tips of segs quite barren.

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