''Cryptostylis hunteriana'', commonly known as the leafless tongue-orchid is a flowering plant in the orchid

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

Orchidaceae Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of flowering ...

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 elsew ...

to south eastern

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

. It is leafless but has up to ten green flowers with a more or less erect, dark reddish brown labellum.

Description

''Cryptostylis hunteriana'' is a terrestrial,

perennial A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...

deciduous In the fields of horticulture and Botany, the term ''deciduous'' () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, aft ...

saprophytic Saprotrophic nutrition or lysotrophic nutrition is a process of chemoheterotrophic extracellular digestion involved in the processing of decayed (dead or waste) organic matter. It occurs in saprotrophs, and is most often associated with fungi (f ...

herb In general use, herbs are a widely distributed and widespread group of plants, excluding vegetables and other plants consumed for macronutrients, with savory or aromatic properties that are used for flavoring and garnishing food, for medicinal ...

. Up to ten flowers long and wide are borne on a flowering stem high. The most prominent feature of the flower is its

spatula A spatula is a broad, flat, flexible blade used to mix, spread and lift material including foods, drugs, plaster and paints. In medical applications, "spatula" may also be used synonymously with tongue depressor. The word ''spatula'' derives f ...

-shaped labellum which is red or maroon in colour with a green base, and is distinctly hairy. The labellum is long and wide with inrolled margins and a smooth underside. Thin green

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 b ...

s measuring in length and about wide arise from its base. The

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

s are similar to the sepals but shorter and narrower. Flowering mainly occurs from December to February.

Taxonomy and naming

''Cryptostylis hunteriana'' was first formally described in 1938 by

William Henry Nicholls William Henry Nicholls (23 July 1885 – 10 March 1951) was an Australian amateur botanist, authority on, and collector of Australian orchids Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flow ...

from a specimen collected near

Marlo Marlo is a name which may refer to: People Given name or nickname Notable people with the given name or nickname include: *Marlo Dahl (born 1972), Canadian curler *Marlo Hoogstraten (also known as MaRLo), Dutch DJ * Martin "Marlo" Hyland (1969–2 ...

by William Hunter (1893–1971), a surveyor from

Bairnsdale Bairnsdale () ( Ganai: ''Wy-yung'') is a city in East Gippsland, Victoria, Australia in a region traditionally owned by the Tatungalung clan of the Gunaikurnai people. The estimated population of Bairnsdale urban area was 15,411 at Ju ...

. The description was published in ''

The Victorian Naturalist ''The Victorian Naturalist'' is a bimonthly scientific journal covering natural history, especially of Australia. It is published by the Field Naturalists Club of Victoria and is received as part of the membership subscription of that club. From ...

''. 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 ...

(''hunteriana'') honours the collector of the type specimen.

Distribution and habitat

The leafless tongue-orchid grows singly or in small colonies in a range of habitats including wet heath and

sedge The Cyperaceae are a family of graminoid (grass-like), monocotyledonous flowering plants known as sedges. The family is large, with some 5,500 known species described in about 90 genera, the largest being the "true sedges" genus ''Carex'' wit ...

land, on grasstree plains and in woodland with scribbly gum, silvertop ash, red bloodwood and black sheoak. It often grows near the other tongue-orchids '' C. subulata'' and '' C. erecta''. The species is found in coastal areas and nearby ranges south from the

Gibraltar Range National Park Gibraltar Range is a national park in north-eastern New South Wales, Australia, north-east of Glen Innes and north of Sydney. The Park is part of the Washpool and Gibraltar Range area of the World Heritage Site Gondwana Rainforests of Au ...

New South Wales ) , nickname = , image_map = New South Wales in Australia.svg , map_caption = Location of New South Wales in AustraliaCoordinates: , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , es ...

to East

Gippsland Gippsland is a rural region that makes up the southeastern part of Victoria, Australia, mostly comprising the coastal plains to the rainward (southern) side of the Victorian Alps (the southernmost section of the Great Dividing Range). It covers ...

between Marlo and

Genoa Genoa ( ; it, Genova ; lij, Zêna ). is the capital of the Italian region of Liguria and the List of cities in Italy, sixth-largest city in Italy. In 2015, 594,733 people lived within the city's administrative limits. As of the 2011 Italian ce ...

Victoria Victoria most commonly refers to: * Victoria (Australia), a state of the Commonwealth of Australia * Victoria, British Columbia, provincial capital of British Columbia, Canada * Victoria (mythology), Roman goddess of Victory * Victoria, Seychelle ...

. In

Queensland ) , nickname = Sunshine State , image_map = Queensland in Australia.svg , map_caption = Location of Queensland in Australia , subdivision_type = Country , subdivision_name = Australia , established_title = Before federation , established_ ...

it has been recorded from the coast at

Tin Can Bay Tin Can Bay is a coastal town and locality in the Wide Bay–Burnett region in Queensland, Australia. The locality is split between the Fraser Coast Region (the northern part of the locality) and the Gympie Region (southern part of the locality) ...

to the

Glass House Mountains The Glass House Mountains are a cluster of thirteen hills that rise abruptly from the coastal plain on the Sunshine Coast, Queensland, Australia. The highest hill is Mount Beerwah at 556 metres above sea level, but the most identifiable of al ...

Ecology

Like other Australian members of its genus, ''C. hunteriana'' is pollinated by the ichneumon wasp known as the orchid dupe wasp (''

Lissopimpla excelsa ''Lissopimpla excelsa'', commonly known as the orchid dupe wasp, is a wasp of the family Ichneumonidae native to Australia. Although also found in New Zealand, where it is known as the dusky-winged ichneumonid, it has probably been introduced the ...

''), the males of which mistake the flower parts for female wasps and copulate with it. Unlike other members of the genus, it lacks a leaf and is instead thought to have a relationship with a fungus for its metabolism.

Conservation

The total population of ''C. hunteriana'' is estimated to be between 1300 and 1500 plants in New South Wales and several hundred in Victoria. The main threat to the species is habitat loss due to housing development and road construction. It has been classified as ''vulnerable'' under the Australian Government ''

Environment Protection and Biodiversity Conservation Act 1999 The ''Environment Protection and Biodiversity Conservation Act 1999'' (Cth) is an Act of the Parliament of Australia that provides a framework for protection of the Australian environment, including its biodiversity and its natural and cultu ...

'' and the New South Wales '' Biodiversity Conservation Act 2016''. In Victoria it is listed as "endangered" under the ''

Flora and Fauna Guarantee Act 1988 The ''Flora and Fauna Guarantee Act 1988'', also known as the ''FFG Act'', is an act of the Victorian Government designed to protect species, genetic material and habitats, to prevent extinction and allow maximum genetic diversity within the Au ...

''.

References

{{Taxonbar, from=Q5191070 hunteriana Endemic orchids of Australia Orchids of New South Wales Orchids of Victoria (Australia) Orchids of Queensland Plants described in 1838