''Trichoglottis australiensis'', commonly known as the weeping cherub orchid, is an

epiphytic An epiphyte is a plant or plant-like organism that grows on the surface of another plant and derives its moisture and nutrients from the air, rain, water (in marine environments) or from debris accumulating around it. The plants on which epiphyt ...

lithophytic Lithophytes are plants that grow in or on rocks. They can be classified as either epilithic (or epipetric) or endolithic; epilithic lithophytes grow on the surfaces of rocks, while endolithic lithophytes grow in the crevices of rocks (and are also ...

clump-forming

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. Orchids are cosmopolitan plants that are found in almost every habitat on Eart ...

. It has thick, cord-like roots, flattened, branching stems, many thick, leathery, glossy leaves and between two and six creamy yellow flowers with reddish blotches. This orchid only occurs in

tropical North Queensland Far North Queensland (FNQ) is the northernmost part of the Australian state of Queensland. Its largest city is Cairns and it is dominated geographically by Cape York Peninsula, which stretches north to the Torres Strait, and west to the Gulf Cou ...

Description

''Trichoglottis australiensis'' is an epiphytic or lithophytic

herb Herbs are a widely distributed and widespread group of plants, excluding vegetables, with savory or aromatic properties that are used for flavoring and garnishing food, for medicinal purposes, or for fragrances. Culinary use typically distingu ...

that forms coarse, untidy clumps with thick, cord-like roots and flattened branching stems long. There are a large number of thick, glossy, leathery, lance-shaped leaves long and wide scattered in two ranks along the stems. Creamy yellow

resupinate Resupination is derived from the Latin word ''resupinus'', meaning "bent back with the face upward" or "on the back". "Resupination" is the noun form of the adjective "resupine" which means "being upside-down, supine or facing upward". The word " ...

flowers with reddish blotches, long and wide are arranged in clusters of between two and six on flowering stems arising opposite the leaf

axil A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, fl ...

s. 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 The fus ...

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 Etymology The term ''sepalum'' ...

is about long and wide, the

lateral Lateral is a geometric term of location which may also refer to: Biology and healthcare * Lateral (anatomy), a term of location meaning "towards the side" * Lateral cricoarytenoid muscle, an intrinsic muscle of the larynx * Lateral release ( ...

sepals slightly wider and the

petal Petals are modified leaves that form an inner whorl surrounding the reproductive parts of flowers. They are often brightly coloured or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''corol ...

s about the same size as the dorsal sepal. The labellum is about long and wide with three lobes, the middle lobe about long and hairy. Flowering occurs from November to May.

Taxonomy and naming

''Trichoglottis australiensis'' was first formally described in 1967 by Alick Dockrill and the description was published in ''The Orchadian'' from a specimen collected in the

McIlwraith Range The McIlwraith Range is a rugged, dissected granite plateau on Cape York Peninsula of Far North Queensland, Australia. Part of the Great Dividing Range, the McIlwraith Range covers about and lies about east of the town of Coen, and north o ...

by Malcolm Brown. 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 ...

(''australiensis'') refers to Australia, the ending ''-ensis'' being a

Latin Latin ( or ) is a classical language belonging to the Italic languages, Italic branch of the Indo-European languages. Latin was originally spoken by the Latins (Italic tribe), Latins in Latium (now known as Lazio), the lower Tiber area aroun ...

suffix In linguistics, a suffix is an affix which is placed after the stem of a word. Common examples are case endings, which indicate the grammatical case of nouns and adjectives, and verb endings, which form the conjugation of verbs. Suffixes can ca ...

"denoting place", "locality" or "country".

Distribution and habitat

The weeping cherub orchid grows on trees and rocks in dense vegetation along gullies and in other humid places. It only occurs in the

Iron Iron is a chemical element; it has symbol Fe () and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's o ...

and McIlwraith Ranges at altitudes between .

Conservation

This orchid is listed as "vulnerable" under the Queensland Government ''

Nature Conservation Act 1992 The ''Nature Conservation Act 1992'' is an act of the Parliament of Queensland, Australia, that, together with subordinate legislation, provides for the legislative protection of Queensland's threatened biota. As originally published, it prov ...

''.

References

{{Taxonbar, from=Q9089851 Endemic orchids of Australia Orchids of Queensland Plants described in 1967 australiensis