Olearia semidentata Decne.

Caption:

Details

Name scientific

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

Preferred name

Macrolearia semidentata (Decne.) Saldivia

Taxonomy reference

Saldivia, P.; Wagstaff, S.J.; Breitwieser, I.; Orlovich, D.A.; Lord, J.M. 2022: A generic taxonomic synopsis of the Pleurophyllum clade (Asteraceae: Astereae: Celmisiinae) with the recognition of the New Zealand endemic new genus Macrolearia. Systematic Botany 47(2): 607–634.

Nomenclature

Authors

Decne.

Original 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

Holotype: Ile Chatam [Chatham Islands], 9bre [i.e, November] 1838, M. Pfihl s.n. (holotype: P 711315

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.