''Cryptandra polyclada'' is a species of flowering plant in the family

Rhamnaceae The Rhamnaceae are a large family of flowering plants, mostly trees, shrubs, and some vines, commonly called the buckthorn family. Rhamnaceae is included in the order Rosales. The family contains about 55 genera and 950 species. The Rhamnaceae ...

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

southwest The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A compass rose is primarily composed of four cardinal directions—north, east, south, and west—each sepa ...

of Western Australia. It is a low, spreading to mat-forming or erect shrub with white or cream-coloured, tube-shaped flowers. It was first formally described in 1904 by

Ludwig Diels Dr. Friedrich Ludwig Emil Diels (24 September 1874 – 30 November 1945) was a German botanist. Diels was born in Hamburg, the son of the classical scholar Hermann Alexander Diels. From 1900 to 1902 he traveled together with Ernst Georg Pr ...

in ''

Botanische Jahrbücher für Systematik, Pflanzengeschichte und Pflanzengeographie This is a list of academic journals, monographic series, and other serials published by E. Schweizerbart. A B C D E F G H I J K L M N P Q R S T U V W Z {{columns-list, colwidth=30em, *''Zeitschrift d ...

'' from specimens collected near Tammin. 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 ...

(''polyclada'') means "many shoots". In 1995,

Barbara Lynette Rye Barbara Lynette Rye is an Australian botanist born in 1952. Barbara Rye has been associated with the Western Australian Herbarium, where her work as a taxonomist has been the source of many new descriptions of plants. The number of taxa record ...

described two subspecies of ''C. polyclada'' in the journal ''

Nuytsia ''Nuytsia floribunda'' is a hemiparasitic tree found in Western Australia. The species is known locally as moodjar and, more recently, the Christmas tree or Western Australian Christmas tree. The display of intensely bright flowers during the ...

'', and the names are accepted by the

Australian Plant Census The Australian Plant Census (APC) provides an online interface to currently accepted, published, scientific names of the vascular flora of Australia, as one of the output interfaces of the national government Integrated Biodiversity Information Syst ...

: * ''Cryptandra polyclada'' subsp. ''aequabilis'' Rye is a low, dense, spreading shrub that typically grows to a height of , has leaves long, white flowers, the floral tube about long densely covered with star-shaped hairs, and

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 long. Flowering occurs in October. This subspecies is only known from in or near

Boorabbin National Park Boorabbin National Park is a national park in Western Australia, between Coolgardie and Southern Cross. It is located along the Great Eastern Highway for a distance of approximately 25 km with a width of 5 km on each side in Western A ...

where it grows in sand in the Coolgardie bioregion of sourh-western Western Australia. * ''Cryptandra polyclada'' Diels subsp. ''polyclada'' is a mat-forming, sometimes erect shrub that typically grows to a height of , has leaves long, white or cream-coloured flowers, the floral tube long usually densely covered with star-shaped hairs, and

s long. Flowering occurs from January to May. This subspecies occurs near Tammin and from near Hyden to east of

Lake King Lake King is a town in the eastern Wheatbelt region of Western Australia, from Perth along State Route 40 between Kelmscott and Ravensthorpe. As of 2016, the town had a population of 95. The 2011 census recorded both the population of the ...

in the

Avon Wheatbelt The Avon Wheatbelt is a bioregion in Western Australia. It has an area of . It is considered part of the larger Southwest Australia savanna ecoregion. Geography The Avon Wheatbelt bioregion is mostly a gently undulating landscape with low reli ...

, Coolgardie,

Esperance Plains Esperance Plains, also known as Eyre Botanical District, is a biogeographic region in southern Western Australia on the south coast between the Avon Wheatbelt and Hampton bioregions, and bordered to the north by the Mallee region. It is ...

and Mallee bioregions. Subspecies ''aequabilis'' is listed as "

Priority One Prioritization is an action that arranges items or activities in order of importance. Priority may refer specifically to: Law * Priority or right of way on the road, see Traffic § Priority (right of way) ** Priority signs, a traffic sign tha ...

" by the Government of Western Australia

Department of Biodiversity, Conservation and Attractions The Department of Biodiversity, Conservation and Attractions (DBCA) is the Western Australian government department responsible for managing lands and waters described in the ''Conservation and Land Management Act 1984'', the ''Rottnest Island ...

, meaning that it is known from only one or a few locations which are potentially at risk, and subsp. ''polyclada'' as " Priority Three", meaning that it is poorly known and known from only a few locations but is not under imminent threat.

References

{{Taxonbar, from1=Q15538117, from2=Q51055309, from3=Q100450941 polyclada Rosales of Australia Flora of Western Australia Plants described in 1904 Taxa named by Ludwig Diels