''Calothamnus cupularis'' is a plant in the myrtle

family Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...

Myrtaceae Myrtaceae, the myrtle family, is a family of dicotyledonous plants placed within the order Myrtales. Myrtle, pōhutukawa, bay rum tree, clove, guava, acca (feijoa), allspice, and eucalyptus are some notable members of this group. All spe ...

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 the south-west of

Western Australia Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to ...

. (In 2014

Craven Craven may refer to: * Craven in the Domesday Book, an area of Yorkshire, England, larger area than the district ** Craven District, a local government district of North Yorkshire formed in 1974 Places * Craven, New South Wales, Australia, see ...

, Edwards and Cowley proposed that the species be renamed ''Melaleuca arcuata''.) It is a similar shrub to ''

Calothamnus formosus ''Calothamnus formosus'' is a plant in the myrtle family, Myrtaceae and is endemic to the south-west of Western Australia. It is a large, spreading, densely foliaged shrub with almost cylindrical, pointed leaves and red flowers in spring or summe ...

'' but has larger flowers and fruit.

Description

''Calothamnus cupularis'' is a shrub growing to a height of about with stems that are hairy at first but become

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 ...

over time. Its leaves are needle-like, mostly long and wide, circular in cross section and tapering at the end to a sharp point. The flowers are bright red and have 5

petal Petals are modified leaves that surround the reproductive parts of flowers. They are often brightly colored or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''corolla''. Petals are usuall ...

s and 5 claw-like bundles of stamens, each about long. The

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 The term ''sepalum'' was coined ...

s have a thickened rib in their centre and wide papery margins. The petals are long. Flowering occurs in September or October and is followed by fruits which are woody, smooth, cylindrical capsules, long.

Taxonomy and naming

''Calothamnus cupularis'' was first formally described in 2010 by

Alex George Alexander or Alex George may refer to: * Alex George (botanist) (born 1939), Australian botanist *Alexander L. George (1920–2006), American political scientist *Alexander George (philosopher), American philosopher * Alex George (motorcyclist), Sc ...

from a specimen found in the

Kalbarri National Park Kalbarri National Park is located north of Perth, in the Mid West region of Western Australia. The major geographical features of the park include the Murchison River gorge which runs for nearly on the lower reaches of the Murchison River. Sp ...

. The

specific epithet In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

(''cupularis'') is

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power ...

for "cup-like", referring to the shape of the fruits of this species.

Distribution and habitat

''Calothamnus cupularis'' occurs in a small area in the Kalbarri National Park, in the

Geraldton Sandplains Geraldton ( Wajarri: ''Jambinu'', Wilunyu: ''Jambinbirri'') is a coastal city in the Mid West region of the Australian state of Western Australia, north of the state capital, Perth. At June 2018, Geraldton had an urban population of 37,648. ...

biogeographic region where it grows in sand in

kwongan Kwongan is plant community found in south-western Western Australia. The name is a Bibbelmun (Noongar) Aboriginal term of wide geographical use defined by Beard (1976) as Kwongan has replaced other terms applied by European botanists such as ...

Conservation

''Calothamnus cupularis'' is classified as "priority 2" by the Western Australian government Department of Parks and Wildlife meaning that is poorly known and from one or a few locations.

References

{{Taxonbar, from=Q17590506 cupularis Myrtales of Australia Plants described in 2010 Endemic flora of Western Australia