Thelymitra yorkensis

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York sun orchid
Thelymitra yorkensis (4595293172).jpg
Thelymitra yorkensis in Wandoo National Park
Status DECF P3.svg
Priority Three — Poorly Known Taxa (DEC)
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Orchidaceae
Subfamily: Orchidoideae
Tribe: Diurideae
Genus: Thelymitra
Species:
T. yorkensis
Binomial name
Thelymitra yorkensis

Thelymitra yorkensis, commonly called the York sun orchid [2] or bronze sun orchid, [3] is a species of orchid in the family Orchidaceae and is endemic to a small area in the south-west of Western Australia. It has a single erect, flat, leathery leaf and up to twelve crowded, cinnamon scented, orange-coloured flowers with reddish brown edges. The column has broad, deeply fringed, orange wings.

Contents

Description

Thelymitra yorkensis is a tuberous, perennial herb with a single erect, flat, leathery, lance-shaped to egg-shaped leaf 50–140 mm (2–6 in) long and 20–40 mm (0.8–2 in) wide. Between two and twelve cinnamon scented, orange-coloured flowers with reddish brown edges, 30–40 mm (1–2 in) wide are crowded on a flowering stem 200–350 mm (8–10 in) tall. The sepals and petals are 12–20 mm (0.5–0.8 in) long and 5–7 mm (0.2–0.3 in) wide. The labellum (the lowest petal) is narrower than the other petals and sepals. The column is yellowish near its base, orange towards the tip, 6–7 mm (0.2–0.3 in) long, 3–4 mm (0.12–0.16 in) wide and has broadly spreading wings with toothed edges. The lobe on the top of the anther has a dense mas of short hairs on its back and a club-like appendage on its top. The flowers are insect pollinated and open on sunny days. Flowering occurs in November and December. [2] [3] [4] [5]

Taxonomy and naming

Thelymitra yorkensis was first formally described in 2006 by Jeff Jeanes from a specimen collected near York and the description was published in Muelleria . [6] [5] The specific epithet (yorkensis) refers to the town near where all known populations occur.

Distribution and habitat

The York sun orchid grows with Eucalyptus wandoo and Eucalyptus accedens trees near York in the Jarrah Forest biogeographic region. [2] [3] [7]

Conservation

Thelymitra yorkensis is classified as "Priority Three" by the Government of Western Australia Department of Parks and Wildlife [7] meaning that it is poorly known and known from only a few locations but is not under imminent threat. [8]

Related Research Articles

Thelymitra frenchii, commonly called the scarp sun orchid or Jarrahdale sun orchid, is a species of orchid in the family Orchidaceae and endemic to a small area in the south-west of Western Australia. It has a single long, fleshy leaf and up to three relatively small, blue flowers.

Thelymitra basaltica, commonly called the grassland sun orchid, is a species of orchid that is endemic to Victoria. It has a single fleshy, channelled, dark green leaf and up to eight small pale blue, self-pollinating flowers which open only slowly on warm to hot days.

Thelymitra bracteata, commonly called the leafy sun orchid or large-bracted sum orchid, is a species of orchid that is endemic to south-eastern Australia. It has a single leathery, more or less flat leaf and up to thirty pale blue flowers that are greenish on the back. The bracts are larger than on similar sun orchids.

<i>Thelymitra graminea</i> Species of orchid

Thelymitra graminea, commonly called the shy sun orchid, is a species of orchid in the family Orchidaceae and is endemic to the south-west of Western Australia. It has a single leathery, channelled leaf and up to ten relatively small blue, self-pollinating flowers with white, toothbrush-like tufts on the top of the anther.

Thelymitra vulgaris, commonly called the slender sun orchid or common sun orchid, is a species of orchid in the family Orchidaceae and endemic to the south-west of Western Australia. It has a single erect, dark green leaf and up to nine relatively small, blue to purplish or white flowers.

<i>Thelymitra epipactoides</i> Species of orchid

Thelymitra epipactoides, commonly called the metallic sun orchid, is a species of orchid that is endemic to south-eastern continental Australia. It has a single relatively large, leathery leaf and up to twenty large flowers that range in colour from pink to reddish but have a distinctive arrangement of lobes above the anther.

Thelymitra occidentalis, commonly called the western azure sun orchid or rimmed orchid, is a species of orchid in the family Orchidaceae and is endemic to the south-west of Australia. It has a single erect, fleshy, channelled, dark green leaf and up to fifteen blue flowers with darker blue veins and sometimes flushed with pink. The lobe on top of the anther has a wavy, yellow crest.

<i>Thelymitra benthamiana</i> Species of orchid

Thelymitra benthamiana, commonly called the leopard sun orchid or blotched sun orchid, is a species of orchid in the family Orchidaceae and is endemic to Australia. It has a single leathery leaf and up to ten yellowish green flowers with brownish spots, blotches and patterns. The column is yellow with deeply fringed wings and the lobe on top of the anther has a large lump on its top.

<i>Thelymitra dedmaniarum</i> Species of orchid

Thelymitra dedmaniarum, commonly called the cinnamon sun orchid, is a species of orchid in the family Orchidaceae and is endemic to Western Australia. It has a single flat, leathery leaf and up to fifteen cinnamon scented, golden yellow flowers. It is a rare orchid with a restricted distribution.

Thelymitra fuscolutea, commonly called the chestnut sun orchid, is a species of orchid in the family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, flat, leathery leaf and up to fifteen or more yellowish green flowers with reddish brown streaks and blotches. The column has broad, deeply fringed cream or whitish wings.

Thelymitra jacksonii, commonly called the Jackson's sun orchid, is a species of orchid in the family Orchidaceae and endemic to the south-west of Western Australia. It has a single erect, flat, leathery leaf and up to twelve dark golden brown flowers with yellow streaks and blotches. The column has broad, spreading wings with a wide fringe.

<i>Thelymitra magnifica</i> Species of orchid

Thelymitra magnifica, commonly called the Crystal Brook sun orchid, is a species of orchid in the family Orchidaceae and is endemic to a small area in the south-west of Western Australia. It has a single erect, flat, leathery leaf and up to eight crowded, dark golden brown flowers with yellow streaks and blotches. The column has broad, deeply fringed, yellow or brownish wings.

Thelymitra stellata, commonly called the star orchid or starry sun orchid, is a species of orchid in the family Orchidaceae and is endemic to the south-west of Western Australia. It has a single erect, flat, leathery leaf and up to twelve brown to reddish brown flowers with yellow streaks and blotches. The column has broad, deeply fringed, orange or yellow wings.

<i>Thelymitra maculata</i> Species of orchid

Thelymitra maculata, commonly called the spotted curly locks or eastern curly locks, is a species of orchid in the family Orchidaceae and endemic to the south-west of Western Australia. It has a single erect leaf, spiralling around the flowering stem and a single pink or purplish, spotted flower with more or less circular, yellow ear-like arms on the sides of the column.

Thelymitra spiralis, commonly called curly locks, is a species of orchid in the family Orchidaceae and endemic to the south-west of Western Australia. It has a single erect leaf, spiralling around the flowering stem and up to three pink, reddish, purplish or blue flowers with two large yellow or orange ear-like arms on the sides of the column.

Thelymitra pulcherrima, commonly called the northern Queen of Sheba, is a species of orchid in the family Orchidaceae and endemic to the south-west of Western Australia. It has a single erect, spiral, dark green leaf with a purplish base and up to seven glossy, variegated flowers with the sepals and petals differing in colour. The petals and sepals and basically reddish or purplish but with streaks and blotches of contrasting colours. There are two bright yellow or orange arms on the sides of the column.

Thelymitra speciosa, commonly called the eastern Queen of Sheba, is a species of orchid in the family Orchidaceae and endemic to the south-west of Western Australia. It has a single erect, spiral, dark green leaf with a purplish base and one or two glossy, purplish flowers with broad reddish edges and yellowish margins. There are two bright yellow or orange arms on the sides of the column.

Thelymitra variegata, commonly called the Queen of Sheba, is a species of orchid in the family Orchidaceae and endemic to the south-west of Western Australia. It has a single erect, spiral, dark green leaf with a purplish base and up to five glossy, variegated reddish, purplish or violet flowers with darker spots and blotches and yellowish margins. There are two bright yellow or orange arms on the sides of the column.

<i>Thelymitra petrophila</i> Species of orchid

Thelymitra petrophila, commonly known as the granite sun orchid, is a species of orchid that is endemic to Western Australia. It has a single erect, channelled, long light green leaf and up to ten or more pale blue to mauve or pink flowers. It grows in drier area, usually in shallow soil pockets on granite outcrops.

Thelymitra paludosa, commonly known as the plain sun orchid, is a species of orchid that is endemic to Western Australia. It has a single erect, channelled, dark green leaf and up to ten or more blue to violet flowers. It grows in higher rainfall areas near the south coast.

References

  1. "Thelymitra yorkensis". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew.
  2. 1 2 3 Brown, Andrew; Dundas, Pat; Dixon, Kingsley; Hopper, Stephen (2008). Orchids of Western Australia. Crawley, Western Australia: University of Western Australia Press. p. 421. ISBN   9780980296457.
  3. 1 2 3 Jones, David L. (2006). A complete guide to native orchids of Australia including the island territories. Frenchs Forest, N.S.W.: New Holland. p. 253. ISBN   1877069124.
  4. Hoffman, Noel; Brown, Andrew (2011). Orchids of South-West Australia (3rd ed.). Gooseberry Hill: Noel Hoffman. p. 294. ISBN   9780646562322.
  5. 1 2 Jeanes, Jeffrey (2006). "Resolution of the Thelymitra fuscolutea R. Br. (Orchidaceae) complex of southern Australia" (PDF). Muelleria. 24: 18–19. Retrieved 7 June 2018.CS1 maint: discouraged parameter (link)
  6. "Thelymitra yorkensis". APNI. Retrieved 7 June 2018.CS1 maint: discouraged parameter (link)
  7. 1 2 "Thelymitra magnifica". FloraBase . Western Australian Government Department of Parks and Wildlife.
  8. "Conservation codes for Western Australian Flora and Fauna" (PDF). Government of Western Australia Department of Parks and Wildlife. Retrieved 7 June 2018.CS1 maint: discouraged parameter (link)