''Corybas pruinosus'', commonly known as the toothed helmet orchid, is a

species In biology, a species is the basic unit of Taxonomy (biology), classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of ...

of terrestrial

orchid 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 ...

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 ...

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 ...

. It grows in moist forests and has a single round or heart-shaped leaf and a relatively small, translucent grey flower with dark red markings.

Description

''Corybas pruinosus'' is a

terrestrial Terrestrial refers to things related to land or the planet Earth. Terrestrial may also refer to: * Terrestrial animal, an animal that lives on land opposed to living in water, or sometimes an animal that lives on or near the ground, as opposed to ...

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, a ...

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 medicina ...

with a single round or heart-shaped leaf long and wide. The leaf is green on the upper surface and silvery green on the lower side. There is a single translucent grey flower with dark red markings. The

dorsal Dorsal (from Latin ''dorsum'' ‘back’) may refer to: * Dorsal (anatomy), an anatomical term of location referring to the back or upper side of an organism or parts of an organism * Dorsal, positioned on top of an aircraft's fuselage * Dorsal co ...

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 ...

is long and wide curves forward over the labellum. The

lateral Lateral is a geometric term of location which may refer to: Healthcare *Lateral (anatomy), an anatomical direction * Lateral cricoarytenoid muscle * Lateral release (surgery), a surgical procedure on the side of a kneecap Phonetics *Lateral co ...

sepals are linear, long and wide and the

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 are about long and wide, often with two points on the tip. The labellum is long and wide with a greyish mound in the cente, many short bristles and its edges with many long, narrow teeth. Flowering occurs from April to July.

Taxonomy

The toothed helmet orchid was first formally described in 1871 by Richard Cunningham and given the name ''Corysanthes pruinosa''. The description was published in the ''New South Wales Magazine''. In 1871,

Heinrich Gustav Reichenbach Heinrich Gustav Reichenbach (Dresden, 3 January 1823 – Hamburg, 6 May 1889) was a botanist and the foremost German orchidologist of the 19th century. His father Heinrich Gottlieb Ludwig Reichenbach (author of ''Icones Florae Germanicae et Hel ...

changed the name to ''Corybas pruinosus''. 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 ...

(''pruinosus'') is a

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 ...

word meaning "frosty" or "rimy".

Distribution and habitat

The toothed helmet orchid grows in forest with shrubs between

Nelson Bay Nelson Bay may refer to: *Nelson Bay, New South Wales Nelson Bay is a significant township of the Port Stephens local government area in the Hunter Region of New South Wales, Australia. It is located on a bay of the same name on the southern ...

, Moruya and

Paterson Paterson may refer to: People * Paterson (surname) * Paterson (given name) Places Australia *Paterson, New South Wales *Paterson River, New South Wales * Division of Paterson, an electoral district in New South Wales *Paterson, Queensland, a lo ...

References

{{Taxonbar, from=Q10261079 pruinosus Endemic orchids of Australia Orchids of New South Wales Plants described in 1871