Diuris fucosa

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Diuris fucosa
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Genus: Diuris
Species:
D. fucosa
Binomial name
Diuris fucosa

Diuris fucosa is a species of orchid that is endemic to New South Wales. It between four and seven leaves and up to four pale yellow flowers with a few brown striations. It is only known from two sites in Callitris woodland in the south of the state and is classed as "extinct" in Victoria.

Contents

Description

Diuris fucosa is a tuberous, perennial herb with a loose tussock of between four and seven narrow linear leaves 100–250 mm (4–10 in) long and 1–3.5 mm (0.04–0.1 in) wide. Up to four pale yellow flowers 30–40 mm (1–2 in) wide are borne on a flowering stem 150–300 mm (6–10 in) tall. The dorsal is egg-shaped and held close to horizontally, 11–15 mm (0.4–0.6 in) long and 7–11 mm (0.3–0.4 in) wide. The lateral sepals are green, lance-shaped with the narrower end towards the base, 15–25 mm (0.6–1 in) long, 1.5–4 mm (0.06–0.2 in) wide and turned below horizontal and usually parallel to each other. The petals spread apart from each other, elliptic to egg-shaped, 10–18 mm (0.4–0.7 in) long and 5–10 mm (0.2–0.4 in) wide on a green to brown stalk 4–7 mm (0.2–0.3 in) long. The labellum is 15–22 mm (0.6–0.9 in) long and has three lobes. The centre lobe is broadly egg-shaped, 12–17 mm (0.5–0.7 in) long and 7–14 mm (0.3–0.6 in) wide and the side lobes are oblong to wedge-shaped, 2–4 mm (0.08–0.2 in) long and 1–2 mm (0.04–0.08 in) wide with irregular edges. There are two thick, brown, pimply callus ridges near the mid-line of the labellum. Flowering occurs in August and September. [2] [3]

Taxonomy and naming

Diuris fucosa was first formally described in 2006 by David Jones from a specimen collected near Urana and the description was published in Australian Orchid Research. [4] The specific epithet (fucosa) is a Latin word meaning "painted", "simulated" or "counterfeit", [5] referring to the tan-brown markings on the labellum of this orchid. [2]

Distribution and habitat

This orchid grows in Callitris woodland in two locations between Urana and Narrandera, one in a state forest and the other on private property. [2] There are two old collections from Victoria but the species is now classed as "extinct" in that state. [3]

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Diuris sulphurea, commonly called the tiger orchid or hornet orchid, is a species of orchid which is endemic to eastern Australia. It has up to three leaves, and a flowering stem with up to seven bright yellow flowers with dark brown markings.

<i>Diuris protena</i> Species of orchid

Diuris protena, commonly known as northern golden moths, is a species of orchid which is endemic to Victoria. It has a tuft of between four and eight leaves at the base and up to three mostly yellow flowers with a few light-coloured marks. It is classed as "endangered" in Victoria.

<i>Diuris chryseopsis</i> Species of orchid

Diuris chryseopsis, commonly known as common golden moths or the small snake orchid, is a species of orchid that is endemic to south-eastern Australia. It is a common and widespread species growing in woodland, often in colonies and has up to four drooping, golden-yellow flowers. It is similar to several other orchids and form hybrids with some other Diuris species.

<i>Diuris dendrobioides</i> Species of orchid

Diuris dendrobioides, commonly known as the wedge diuris, is a species of orchid which is endemic to eastern Australia. It has one or two leaves and a flowering stem with up to six pale lilac-coloured to mauve flowers with darker markings.

<i>Diuris punctata</i> Species of orchid

Diuris punctata, commonly known as the purple donkey orchid is a species of orchid which is endemic to south-eastern continental Australia. It has two grass-like leaves and up to ten purple or mauve flowers, often with darker, sometimes yellow marks. A yellow form from near Guyra is probably now extinct.

Diuris bracteata is a species of orchid which is endemic to New South Wales. It has two folded leaves and up to eight yellow flowers with blackish marks. After its collection in a Sydney suburb in 1888, no further collections were made and the species was presumed extinct until 2004 when it was rediscovered near Gosford.

Diuris callitrophila, commonly known as the Oaklands doubletail or Oaklands diuris, is a species of orchid which is endemic to a small part of southern New South Wales. It has two or three leaves and up to nine whitish and mauve flowers with darker markings and unusually long lateral sepals.

<i>Diuris concinna</i> Species of orchid

Diuris concinna, commonly called the elegant donkey orchid, is a species of orchid which is endemic to the south-west of Western Australia. It has up to five linear leaves at its base and up to five pale yellow flowers with brown markings. It is found along the south coast, often growing in areas that are flooded in winter and flowering more prolifically after fire the previous summer.

Diuris eburnea is a species of orchid that is endemic to the south-west of Western Australia. It has between four and six linear leaves and up to eight pale yellow to cream-coloured flowers with reddish markings. It is only known from near the Arrowsmith River north of Eneabba.

Diuris exitela, commonly called the Mount Moffat doubletail, is a species of orchid which is endemic to central western Queensland. It has two linear leaves at its base, up to twelve bright yellow flowers with dark brown markings and grows on sandstone cliffs and ridges.

Diuris flavescens, commonly called the pale yellow doubletail or Wingham doubletail, is a species of orchid which is endemic to a small area in New South Wales. It has two linear leaves at its base and up to five pale yellow flowers with dark brown markings. Fewer than 200 plants survive in grassy forest near Wingham.

<i>Diuris gregaria</i> Species of orchid

Diuris gregaria, commonly known as clumping golden moths is a species of orchid that is endemic to Victoria. It between three and seven leaves and one or two bright yellow flowers with a few dark striations and usually grows in dense tufts of up to thirty plants. It is a rare species mostly only found in grassland west of Melbourne.

Diuris immaculata, commonly known as the little Esperance bee orchid, is a rare species of orchid that is endemic to the south-west of Western Australia. It has between four and six leaves and up to three golden yellow flowers without markings. It is only known from near Esperance.

<i>Diuris laevis</i> Species of orchid

Diuris laevis, commonly known as the nanny goat orchid, is a rare species of orchid that is endemic to the south-west of Western Australia. It has between four and eight leaves and up to six pale yellow flowers which usually have reddish-brown markings. It has an unusually short dorsal sepal and wide labellum and is relatively common between Bunbury and Albany.

<i>Diuris monticola</i> Species of orchid

Diuris monticola, commonly known as highland golden moths, is a species of orchid that is endemic to south-eastern Australia. It is a common and widespread, late flowering species growing in grassland and woodland habitats at higher altitudes. It has a tuft of up to nine leaves at the base and up to four slightly drooping bright yellow flowers with dark streaks in the centre.

Diuris oporina, commonly called the autumn donkey orchid or northern white donkeys tails is a species of orchid that is endemic to Queensland. It has a single tapering, linear leaf at its base and up to ten white flowers with mauve to purple markings. It grows in the drier parts of the tablelands in Far North Queensland.

<i>Diuris palustris</i> Species of orchid

Diuris palustris, commonly known as the swamp doubletail or swamp diuris is a species of orchid which is endemic to south-eastern Australia. It has a tuft of between eight and ten twisted leaves and up to four yellow flowers with brown spots and blotches marks and blotches.

<i>Diuris purdiei</i> Species of orchid

Diuris purdiei, commonly known as Purdie's donkey orchid, is a species of orchid that is endemic to the south-west of Western Australia. It has between five and ten leaves at its base and up to eight pale yellow flowers with reddish-brown or purplish markings. It mainly grows in swampy areas and only flowers after fires the previous summer.

Diuris recurva, commonly called the mini donkey orchid is a species of orchid that is endemic to the south-west of Western Australia. It has one or two leaves at its base, up to six small pale yellow and brownish flowers and grows in winter-wet places between Badgingarra and Kalbarri.

Diuris striata is a poorly-known species of orchid that is endemic to New South Wales. It has a two grass-like leaves and about four mauve flowers with dark purple streaks on the labellum.

References

  1. "Diuris fucosa". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  2. 1 2 3 Jones, David L. (2006). "Miscellaneous new species of Australian Orchidaceae". Australian Orchid Research. 5: 78–79.
  3. 1 2 Stajsic, Val. "Diuris fucosa". Royal Botanic Gardens Victoria. Retrieved 22 March 2018.
  4. "Duiris curta". APNI. Retrieved 22 March 2018.
  5. Brown, Roland Wilbur (1956). The Composition of Scientific Words. Washington, D.C.: Smithsonian Institution Press. p. 477.