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

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

and is

endemic Endemism is the state of a species being found only 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 foun ...

to Tasmania. It is a shrub with small, crowded, narrowly elliptic leaves and white and yellow, daisy-like

inflorescence In botany, an inflorescence is a group or cluster of flowers arranged on a plant's Plant stem, stem that is composed of a main branch or a system of branches. An inflorescence is categorized on the basis of the arrangement of flowers on a mai ...

Description

''Olearia archeri'' is a shrub that typically grows to a height of up to , its foliage covered with T-shaped hairs. The leaves are narrowly elliptic, long and wide on a

petiole Petiole may refer to: *Petiole (botany), the stalk of a leaf, attaching the blade to the stem *Petiole (insect anatomy) In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and ...

long and pale yellowish brown on the lower side. The heads are arranged in many groups of three on the ends of branchlets, each group on a peduncle up to long. Each head or daisy-like "flower" has 7 to 8 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 ...

, the petal-like

ligule A ligule (from "strap", variant of ''lingula'', from ''lingua'' "tongue") is a thin outgrowth at the junction of leaf A leaf (: leaves) is a principal appendage of the plant stem, stem of a vascular plant, usually borne laterally above g ...

long, surrounding 19 to 27 yellow disc florets. Flowering occurs from September to March and the fruit is a brown

achene An achene (; ), also sometimes called akene and occasionally achenium or achenocarp, is a type of simple fruit, simple dry fruits, dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and Dehi ...

, the pappus with 66–85 bristles.

Taxonomy and naming

''Olearia archeri'' was first formally described in 1989 by

Nicholas Sèan Lander Nicholas Lander is an Australian botanist. References External links * {{DEFAULTSORT:Lander, Nicholas 1948 births Living people Botanists active in Australia 20th-century Australian botanists 21st-century Australian botanists ...

in the journal '' Muelleria'' from specimens collected by Ann and David Ratkowsky at Cash's lookout on

Eaglehawk Neck Eaglehawk Neck, officially Teralina / Eaglehawk Neck, is a narrow isthmus that connects the Tasman Peninsula with the Forestier Peninsula and hence to the rest of Tasmania, Australia. It is about north-east of the town of Nubeena in the lo ...

in 1973. The

specific epithet In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...

(''archeri'') honours William Archer.

Distribution and habitat

This daisy-bush grows in shady places in open forest on stony hillsides on the east coast of Tasmania, at altitudes up to .

References

{{Taxonbar, from=Q15587972 Flora of Tasmania archeri Plants described in 1989