''Olearia nernstii'' is a species of flowering plant in the family

Asteraceae The family Asteraceae, alternatively Compositae, consists of over 32,000 known species of flowering plants in over 1,900 genera within the order Asterales. Commonly referred to as the aster, daisy, composite, or sunflower family, Compositae ...

and is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

to eastern Australia. It is a shrub with scattered egg-shaped to elliptic leaves with toothed or prickly edges, and white and yellow, daisy-like

inflorescence An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed ...

Description

''Olearia nernstii'' is a shrub that typically grows to a height of up to . Its leaves are arranged alternately but scattered, egg-shaped to elliptic, long and wide with toothed or prickly edges. The lower surface of the leaves is covered with woolly brown hairs. The heads or daisy-like "flowers" are arranged in loose groups on the ends of branches on a

peduncle Peduncle may refer to: *Peduncle (botany), a stalk supporting an inflorescence, which is the part of the shoot of seed plants where flowers are formed *Peduncle (anatomy), a stem, through which a mass of tissue is attached to a body **Peduncle (art ...

up to long. Each head is wide with nine to twenty white ray

florets This glossary of botanical terms is a list of definitions of terms and concepts relevant to botany and plants in general. Terms of plant morphology are included here as well as at the more specific Glossary of plant morphology and Glossary o ...

surrounding fifteen to forty yellow disc florets. Flowering occurs from July to November and the fruit is a more or less

glabrous Glabrousness (from the Latin '' glaber'' meaning "bald", "hairless", "shaved", "smooth") is the technical term for a lack of hair, down, setae, trichomes or other such covering. A glabrous surface may be a natural characteristic of all or part o ...

achene An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not op ...

, the pappus with 29 to 45 bristles.

Taxonomy

This daisy bush was first formally described in 1865 by

Ferdinand von Mueller Baron Sir Ferdinand Jacob Heinrich von Mueller, (german: Müller; 30 June 1825 – 10 October 1896) was a German-Australian physician, geographer, and most notably, a botanist. He was appointed government botanist for the then colony of Vic ...

, who gave it the name ''Aster nernstii'' in '' Fragmenta Phytographiae Australiae'' from specimens he collected near

Moreton Bay Moreton Bay is a bay located on the eastern coast of Australia from central Brisbane, Queensland. It is one of Queensland's most important coastal resources. The waters of Moreton Bay are a popular destination for recreational anglers and are ...

. In 1867,

George Bentham George Bentham (22 September 1800 – 10 September 1884) was an English botanist, described by the weed botanist Duane Isely as "the premier systematic botanist of the nineteenth century". Born into a distinguished family, he initially studi ...

changed the name to ''Olearia nernstii'' in ''

Flora Australiensis ''Flora Australiensis: a description of the plants of the Australian Territory'', more commonly referred to as ''Flora Australiensis'', and also known by its standard abbreviation ''Fl. Austral.'', is a seven-volume flora of Australia published b ...

''. In the ''Fragmenta'', Mueller refers to a collection made by Nerst near

Ipswich Ipswich () is a port town and borough in Suffolk, England, of which it is the county town. The town is located in East Anglia about away from the mouth of the River Orwell and the North Sea. Ipswich is both on the Great Eastern Main Line r ...

. The ''Public Place Names Act 1989'' of the Australian Capital Territory, refers to Nernst Place named after "Joseph Nernst c. 1832–1878) botanical collector".

Distribution and habitat

''Olearia nernstii'' grows in forest or woodland in coastal areas and nearby ranges of south-eastern Queensland to near

Gosford Gosford is the city and administrative centre of the Central Coast Council local government area in the heart of the Central Coast region, about north of Sydney and about south of Newcastle. The city centre is situated at the northern ext ...

and as far inland as Torrington in New South Wales.

References

{{Taxonbar, from=Q15589918 Asterales of Australia Flora of New South Wales Flora of Queensland nernstii Plants described in 1865 Taxa named by Ferdinand von Mueller