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Pleurophyllum semidentata (Decne.) Heenan

Scientific name record
Names_Plants record source
Is NZ relevant
This is the current name
This record has collections
This record has descriptions
This is indigenous

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Endemic
Wild
New Zealand
Political Region

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Heenan
Decne.
(Decne.) Heenan
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.
2026
18 (online)
ICN
Olearia semidentata Decne.
species
Pleurophyllum semidentata

Click to collapse Classification Info

Plantae
Tracheophyta
Magnoliopsida
Asterales
Compositae
Pleurophyllum
semidentata

Click to collapse Vernacular names Info

Click to collapse Descriptions Info

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

Olearia semidentata Decne.

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.

Olearia semidentata Decne.

2n = 108

Click to collapse Taxonomic concepts Info

Eurybia semidentata (Decne.) F.Muell.
Eurybia semidentata (Decne.) F.Muell.
Allan Herbarium (2007)
Olearia semidentata Decne.
Eurybia Cass.
Eurybia semidentata (Decne.) F.Muell.
Eurybia semidentata (Decne.) F.Muell.
Allan, H.H. (1961)
Olearia semidentata Decne.
Eurybia semidentata (Decne.) F.Muell.
Eurybia semidentata (Decne.) F.Muell.
Heenan, P.B. (2026)
Eurybia semidentata (Decne.) F.Muell.
Eurybia semidentata (Decne.) F.Muell.
Saldivia, P.; Wagstaff, S.J. et al. (2022)
Macrolearia semidentata (Decne.) Saldivia
Macrolearia semidentata (Decne.) Saldivia
Macrolearia semidentata (Decne.) Saldivia
de Lange, P.J.; Gosden, J. et al. (2024)
Macrolearia semidentata (Decne.) Saldivia
Macrolearia semidentata (Decne.) Saldivia
Macrolearia semidentata (Decne.) Saldivia
Heenan, P.B. (2026)
Macrolearia semidentata (Decne.) Saldivia
Macrolearia semidentata (Decne.) Saldivia
Saldivia, P.; Wagstaff, S.J. et al. (2022)
Macrolearia semidentata (Decne.) Saldivia
Olearia semidentata Decne.
Olearia semidentata Decne.
Allan Herbarium (2007)
Olearia semidentata Decne.
Olearia Moench
Olearia semidentata Decne.
Olearia semidentata Decne.
Allan, H.H. (1961)
Olearia semidentata Decne.
Olearia semidentata Decne.
Dawson, M.I. (2008)
Olearia Moench
Olearia semidentata Decne.
Olearia semidentata Decne.
de Lange, P.J.; Norton, D.A. et al. (2004)
Olearia semidentata Decne.
Olearia semidentata Decne.
de Lange, P.J.; Norton, D.A. et al. (2009)
Olearia semidentata Decne.
Olearia semidentata Decne.
de Lange, P.J.; Rolfe, J.R. et al. (2013)
Olearia semidentata Decne.
Olearia semidentata Decne.
Olearia semidentata Decne.
de Lange, P.J.; Rolfe, J.R. et al. (2018)
Olearia semidentata Decne.
Olearia semidentata Decne.
Olearia semidentata Decne.
Heenan, P.B. (2026)
Olearia semidentata Decne.
Olearia semidentata Decne.
Nelson, E.C. (1988)
Olearia semidentata Decne.
Olearia semidentata Decne.
Olearia semidentata Decne.
Saldivia, P.; Wagstaff, S.J. et al. (2022)
Macrolearia semidentata (Decne.) Saldivia
Olearia semidentata var. albiflora Dorrien-Smith
Olearia semidentata var. albiflora Dorrien-Smith
Saldivia, P.; Wagstaff, S.J. et al. (2022)
Macrolearia semidentata (Decne.) Saldivia
Pleurophyllum semidentata (Decne.) Heenan
Pleurophyllum semidentata (Decne.) Heenan
Heenan, P.B. (2026)
Pleurophyllum semidentata (Decne.) Heenan

Click to collapse Collections Info

Macrolearia semidentata (Decne.) Saldivia
New Zealand
2 Link to an external page
Macrolearia semidentata (Decne.) Saldivia
New Zealand
Canterbury Land District
1 Link to an external page
Macrolearia semidentata (Decne.) Saldivia
New Zealand
Chatham Islands
2 Link to an external page
Macrolearia semidentata (Decne.) Saldivia
New Zealand
Otago Land District
2 Link to an external page
Macrolearia semidentata (Decne.) Saldivia
New Zealand
Wellington Land District
37 Link to an external page
Olearia semidentata Decne.
New Zealand
Wellington Land District
1 Link to an external page

Click to collapse Metadata Info

2ff05507-f6db-48fc-85f4-abfb03334fb9
scientific name
Names_Plants
2 October 2026
1 October 2026
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