Olearia semidentata Decne.

Caption:

Details

Name scientific

Olearia semidentata Decne., Voy. Venus, Bot. [Atl.] t. 13 (1846)

Preferred name

Pleurophyllum semidentata (Decne.) Heenan

Taxonomy reference

Heenan, P.B. 2026: A critique of the taxonomy of subtribe Celmisiinae (Asteraceae: Tribe Astereae) with new combinations in Pleurophyllum Hook.f. sens. lat. and Shawia hesperia (Heenan & Molloy) Heenan comb. nov. New Zealand Journal of Botany: 1–22 (online) https://doi.org/10.1002/nzb2.70161.

Nomenclature

Original authors

Decne.

Authors

Decne.

Publication place

Decaisne, J. 1846: Voyage Autour du Monde sur la Frégate la Venus Pendant les Années 1836-1839 [par A.A. Du Petit-Thouars]: Atlas (Botanique). Gide & Cie, Paris.

Year published

1846

Publication page

t. 13

Nomenclatural code

ICN

Basionym

Olearia semidentata Decne.

Taxonomic rank

species

Canonical form

Olearia semidentata

Typification

Type collection: Not stated. Lectotype designated by Heenan 2026): Decaisne, Voy. Venus Bot. Atlas, t. 13 (1846),

Classification

Kingdom

Plantae

Phylum

Tracheophyta

Class

Magnoliopsida

Order

Asterales

Family

Compositae

Genus

Olearia

Species

semidentata

Subordinates

Olearia semidentata var. albiflora

Vernacular names

Language of use: English

Language of use: Māori

Descriptions

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

Olearia semidentata Decne.

Description

Shrub up to 1 m. tall; branchlets slender, clad in white floccose tomentum. Lvs 3·5-7 cm. × 6-9 mm., narrow-lanceolate, subsessile, rather distantly serrate in upper half, glab. above when mature, clad in white appressed tomentum below. Peduncles slender, tomentose, 5-8 cm. long, with ∞ lanceolate bracts. Capitula 2.5-3·5 cm. diam.; phyll. pilose towards tips and on margins, acute, up to 1 cm. long; ray-florets purple, disk-florets violet-purple; achenes linear, pubescent, c. 3 mm. long; pappus-hairs up to 7 mm. long.

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