Biology:Atractocarpus fitzalanii

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Short description: Species of plant in the family Rubiaceae

Brown gardenia
Atractocarpus fitzalanii.jpg
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Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Rubiaceae
Genus: Atractocarpus
Species:
A. fitzalanii
Binomial name
Atractocarpus fitzalanii
(F.Muell.) Puttock[2][3]
Atractocarpus-fitzalanii-distribution-map.png
Synonyms[3]
  • Gardenia fitzalanii F.Muell.
  • Randia fitzalanii (F.Muell.) F.Muell. ex Benth.
  • Trukia fitzalanii (F.Muell.) Fosberg

Atractocarpus fitzalanii, commonly known as the brown gardenia or yellow mangosteen, is a species of plant in the coffee and madder family Rubiaceae. It is found in coastal parts of tropical Queensland, Australia. The beautifully scented flowers and glossy foliage has seen this plant enter cultivation in gardens of eastern Australia.

Description

The brown gardenia is a woody shrub or small tree usually growing up to 3 m (9.8 ft) wide and 8 m (26 ft) high, although it may reach up to 20 m (66 ft) on occasions,[4]:285 and it has a smooth grey trunk up to 35 cm (14 in) diameter.[4]:285[5][6][7] The large leaves are obovate to oval-shaped and may be up to 20 cm (7.9 in) long by 10 cm (3.9 in) wide, held on petioles up to 3 cm (1.2 in) long. They are glossy dark green above, dull grey-green below, and have an opposite arrangement. The lateral veins number 6–7 pairs and subtend an angle of 50°–70° to the midrib.[4]:285 The new growth is a bright lime green in colour.

This species is dioecious,[4]:285 meaning that male and female flowers are borne on separate plants. The inflorescences are panicles produced either terminally or in the leaf axils; male inflorescences have 15–30 flowers while female ones have up to 15 flowers.[4]:285[8] The fragrant white flowers measure about 3 cm (1.2 in) in diameter with a corolla tube about 1.5 cm (0.59 in) long.[5][7][9]

The globose fruit is a drupe, yellow-brown in colour and measuring up to 10 cm (3.9 in) long by 9 cm (3.5 in) wide, usually produced singly or rarely in a cluster of 3-4.[5][8] In the subspecies tenuipes they are paler, measure up to 3.8 cm (1.5 in) long by 3.5 cm (1.4 in) wide, and produced in clusters of 3-7.[8][9] The calyx is persistent at the apex of the fruit in both subspecies.[5][9]

Phenology

The subspecies fitzalanii flowers from October to February, and fruit ripen between September and March.[4]:288 Subspecies tenuipes flowers between October and November, while the fruit mature from May to August.[4]:289

Taxonomy

This species was originally described as Gardenia fitzalanii in 1860 by the German naturalist and Victorian state botanist Ferdinand von Mueller.[10] The description was based on plant material collected by the Irish-born botanist Eugene Fitzalan during an expedition in August–October 1860 to find the mouth of the Burdekin River.[11]

In 1866 George Bentham transferred the species to the genus Randia,[12] where it remained for over 130 years. In 1999 the Australian botanist Christopher Francis Puttock published a revision of Atractocarpus in Australia, in which he gave this species its current combination.[4]

Subspecies

Two subspecies are recognised:[3][4][5][9]

  • Atractocarpus fitzalanii subsp. fitzalanii
  • Atractocarpus fitzalanii subsp. tenuipes

Etymology

The genus name Atractocarpus is derived from the Ancient Greek terms átraktos, meaning "spindle", and karpós meaning "fruit", and refers to the spindle-shaped fruit of the type species.[8] The species epithet fitzalanii was given in honour of the collector. The subspecies name tenuipes is from the Latin tenuipes meaning "slender legged", a reference to the slender pedicels displayed by the group.[4]

Distribution and habitat

A. f. subsp. fitzalanii is widespread in rainforest, monsoon forest, swamp forest, mangrove forest, and riparian forest from just south of Cooktown to just south of Mackay, at elevations from sea level to around 1,200 m (3,900 ft).[4][5][8]

A. f. subsp. tenuipes is found in higher elevations and has a more restricted range than its parent, from near Cape Tribulation to the southern Atherton Tablelands, at altitudes from 500 to 1,500 m (1,600 to 4,900 ft).[4][8][9]

Ecology

Moths visit the flowers soon after opening.[4]:273 The fruits are eaten by a variety of birds and animals, including the cassowary (Casuarius casuarius).[6][7]

Cultivation

Its bushy lush foliage and bright new growth, fragrant flowers and edible and tasty fruit give it horticultural potential in gardens in subtropical climates. It is suited to a shady position with good drainage in gardens, or moderately to brightly lit indoor spaces.[13] In the city of Cairns, more than 280 of these have been planted as street trees.[14]

Gallery

  • Habit

  • Foliage

  • Fruit

  • Cut fruit

  • Flowers

References

  1. ↑ IUCN SSC Global Tree Specialist Group; Botanic Gardens Conservation International (BGCI). (2021). "Atractocarpus fitzalanii". IUCN Red List of Threatened Species 2021: e.T192498222A192498224. doi:10.2305/IUCN.UK.2021-1.RLTS.T192498222A192498224.en. https://www.iucnredlist.org/species/192498222/192498224. Retrieved 7 September 2023. 
  2. ↑ "Atractocarpus fitzalanii". Centre for Australian National Biodiversity Research, Australian Government. https://id.biodiversity.org.au/name/apni/135460. 
  3. ↑ 3.0 3.1 3.2 "Atractocarpus fitzalanii (F.Muell.) Puttock". Royal Botanic Gardens, Kew. https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:1008720-1. 
  4. ↑ 4.00 4.01 4.02 4.03 4.04 4.05 4.06 4.07 4.08 4.09 4.10 4.11 4.12 Puttock, Christopher F. (10 July 1999). "Revision of Atractocarpus (Rubiaceae: Gardenieae) in Australia and New Combinations for Some Extra-Australian Taxa". Australian Systematic Botany 12 (2): 285. doi:10.1071/SB97030. https://www.publish.csiro.au/SB/SB97030. Retrieved 8 September 2023. 
  5. ↑ 5.0 5.1 5.2 5.3 5.4 5.5 "Atractocarpus fitzalanii subsp. fitzalanii". Centre for Australian National Biodiversity Research (CANBR), Australian Government. 2020. https://apps.lucidcentral.org/rainforest/text/entities/Atractocarpus_fitzalanii_subsp._fitzalanii.htm. 
  6. ↑ 6.0 6.1 "Native Gardenia". The State of Queensland (Department of Education). https://tooheyforesteec.eq.edu.au/support-and-resources/research/native-gardenia. 
  7. ↑ 7.0 7.1 7.2 "Native gardenia, brown gardenia". https://cqclandcarenetwork.org.au/plants/native-gardenia/. 
  8. ↑ 8.0 8.1 8.2 8.3 8.4 8.5 Cooper, Wendy; Cooper, William T. (June 2004). Fruits of the Australian Tropical Rainforest. Clifton Hill, Victoria, Australia: Nokomis Editions. p. 434. ISBN 9780958174213. https://www.nokomis.com.au/product/nokomis-published-books/fruits-australian-tropical-rainforest/. 
  9. ↑ 9.0 9.1 9.2 9.3 9.4 "Atractocarpus fitzalanii subsp. tenuipes". Centre for Australian National Biodiversity Research (CANBR), Australian Government. 2020. https://apps.lucidcentral.org/rainforest/text/entities/Atractocarpus_fitzalanii_subsp._tenuipes.htm. 
  10. ↑ Mueller, Ferdinand von (1860). Essay on the plants collected by Mr Eugene Fitzalan, during Lieut. Smith's expedition to the estuary of the Burdekin. Melbourne: Victorian Government. https://www.biodiversitylibrary.org/item/197781. Retrieved 8 September 2023. 
  11. ↑ Report of the proceedings of the Queensland Government schooner "Spitfire" in search of the mouth of the River Burdekin, on the north-eastern coast of Australia : and of the exploration of a portion of that coast extending from Gloucester Island to Halifax Bay., Brisbane: Queensland Government, 1860, nla.obj-475664242, http://nla.gov.au/nla.obj-475664242, retrieved 8 September 2023 
  12. ↑ Bentham, George; Mueller, Ferdinand von (1866). Flora australiensis: a description of the plants of the Australian territory. London: L. Reeve and Co.. p. 411. https://www.biodiversitylibrary.org/page/16484094. Retrieved 8 September 2023. 
  13. ↑ Ratcliffe, David & Patricia (1987). Australian Native Plants for Indoors. Crows Nest, NSW: Little Hills Press. p. 125. ISBN 0-949773-49-2. 
  14. ↑ "TreePlotter". https://au.pg-cloud.com/Cairns/. 
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External links

Wikidata ☰ Q4817483 entry



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