Atractocarpus merikin

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Mountain gardenia
Atractocarpus-merikin-inaturalist-243163795.jpg
Flowers
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Atractocarpus
Species:
A. merikin
Binomial name
Atractocarpus merikin
Atractocarpus-merikin-distribution-map.png
Synonyms [3]
  • Gardenia merrikenF.M.Bailey

Atractocarpus merikin, commonly known as the mountain gardenia or merikin, is a plant in the Rubiaceae family endemic to northeast Queensland, Australia.

Contents

Description

Atractocarpus merikin is an evergreen shrub growing up to 3 m (9.8 ft) in height, occasionally 5 m (16 ft), with separate male and female plants. [4] [5] The dark green leaves are arranged in opposite pairs and may be up to 18 cm (7.1 in) long by 6 cm (2.4 in) wide. They are narrow at the base and broadest near the far end of the blade, and the base is auriclulate and sessile or almost sessile. [4] [5]

The inflorescences may consist of panicles, fascicles or solitary flowers, and are produced in the leaf axils. [5] The white fragrant flowers have 5 petals and measure about 50 mm (2.0 in) diameter. [5] The calyx lobes are about 1 mm (0.039 in) long, the corolla tube about 15–20 mm (0.59–0.79 in) long. [4]

The fruit is an orange, pink or reddish drupe between 35 and 70 mm (1.4 and 2.8 in) long and 25 and 45 mm (0.98 and 1.77 in) wide, containing numerous brown patelliform (i.e. like a shallow dish) seeds. [4] [5]

Phenology

Flowering occurs from October to February, fruits ripen from July to February. [5]

Taxonomy

This species was first described in 1902 by the English born Australian botanist Frederick Manson Bailey in his book The Queensland Flora, in which he gave it the name Gardenia merikin. [6] In 1999 the Australian botanist Christopher Francis Puttock transferred the taxon to the genus Atractocarpus , which is the current combination. [2] [3]

Etymology

The genus name Atractocarpus is created from the Ancient Greek words atractos (spindle) and karpos (fruit). It refers to the shape of the fruit of the type species, Atractocarpus bracteatus . The species epithet merikin is the local indigenous name for the plant. [5] [6]

Distribution and habitat

Merikin grows in well developed rainforest from Mt Spurgeon (source of the Mossman River), to the Tully River, at altitudes from around 80 m (260 ft) to 1,300 m (4,300 ft). [4] [5]

Conservation

This species is listed by the Queensland Department of Environment and Science as least concern. [1] As of 13 October 2023, it has not been assessed by the IUCN.

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References

  1. 1 2 "Species profile—Atractocarpus merikin". Queensland Department of Environment and Science. Queensland Government. 2022. Retrieved 18 January 2023.
  2. 1 2 "Atractocarpus merikin". Australian Plant Name Index (APNI). Centre for Plant Biodiversity Research, Australian Government . Retrieved 18 January 2023.
  3. 1 2 3 "Atractocarpus merikin(F.M.Bailey) C.F.Puttock". Plants of the World Online . Royal Botanic Gardens, Kew . Retrieved 18 January 2023.
  4. 1 2 3 4 5 F.A.Zich; B.P.M.Hyland; T.Whiffen; R.A.Kerrigan (2020). "Atractocarpus merikin". Australian Tropical Rainforest Plants Edition 8 (RFK8). Centre for Australian National Biodiversity Research (CANBR), Australian Government . Retrieved 18 January 2023.
  5. 1 2 3 4 5 6 7 8 Cooper, Wendy; Cooper, William T. (June 2004). Fruits of the Australian Tropical Rainforest. Clifton Hill, Victoria, Australia: Nokomis Editions. p. 435. ISBN   9780958174213.
  6. 1 2 Bailey, F.M. (1827–1915). The Queensland Flora. H. J. Diddams & co. Retrieved 18 January 2023.