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Drosera binata

Drosera binata, commonly known as the forked sundew[3] or fork-leaved sundew,[4] is a large, perennial sundew native to Australia and New Zealand. The specific epithet is Latin for "having pairs" - a reference to the leaves, which are dichotomously divided or forked.[4]

Drosera binata
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Caryophyllales
Family: Droseraceae
Genus: Drosera
Subgenus: Drosera subg. Phycopsis
(Planch.) Schlauer
Species:
D. binata
Binomial name
Drosera binata
Occurrence data from AVH
Synonyms

Like all sundews, it is a Carnivorous plant. It is unique among sundews in having narrow, branching leaves. It is the only species in the Drosera subgenus Phycopsis.

D. binata occurs naturally in Australia, primarily in coastal areas from Fraser Island in Queensland, southwards down through New South Wales and Victoria to Tasmania and the south-east corner of South Australia. The range of this species extends to New Zealand where it is common below an elevation of 1000 metres, being found in both the North and South Islands, Stewart Island/Rakiura and farther afield on the Chathams.[4] Some populations go dormant in the winter, while others are truly tropical.

Taxonomy and botanical history

Plants similar to the type specimen, commonly referred to as the "T-form", were first collected in 1792 by the French exploration of Australia's southern coast led by Bruni d'Entrecasteaux. The naturalist on board that expedition, Jacques Labillardière, first described D. binata in his 1804 publication on the flora of Australia, Novae Hollandiae Plantarum Specimen. The T-form, so named for its single leaf bifurcation spreading into a T-shape, is a robust plant from temperate zones that can grow up to 30 cm (12 in) and has green foliage that becomes redder with age. This form has been described as being genetically stable.[5][6]

The second observed form, commonly referred to as var. dichotoma, is similar to the T-form, but the foliage is yellower and the leaf typically divides into four terminal leaf points, though it has been known to produce as many as eight leaf points.[5][6] It was first validly described in an 1819 volume of Rees's Cyclopædia by James Edward Smith as D. dichotoma, based on the description by Joseph Banks and Daniel Solander. This name, however, has since been reduced to synonymy with D. binata.[7][8] This morphological form was first published as "var. dichotoma" by J. A. Mazrimas in a 1976 volume of the Carnivorous Plant Newsletter, but the publication of that name was invalid under the rules of the International Code of Botanical Nomenclature. Even though the name is not valid, it is still widely used in cultivation to refer to this D. binata form.[5][7][9] This was one of many plants used by Charles Darwin in his investigation of carnivorous plants for his 1875 book Insectivorous Plants.[5][10]

A third described form, often called D. binata f. multifida, has even more leaf divisions, bifurcating several times to produce anywhere from eight to 16 or even 30 terminal leaf points.[5][6] This, too, was published by J. A. Mazrimas in the same 1976 volume of the Carnivorous Plant Newsletter as var. multifida, referring to the description of a 27-point D. binata found by George Ashley and published in a 1975 volume of the Carnivorous Plant Newsletter.[9][11] Neither of these names were validly published, but again they remain in use among carnivorous plant growers. A final form, known for producing up to 40 terminal leaf points, is frequently titled f. extrema, another name that has never been validly published but remains in use.[5]

Two cultivars of D. binata have been named. Drosera 'Giant' is a particularly large form of the "var. dichotoma" type and was published by Peter D'Amato in 1998 and registered in 1999. The other, Drosera 'Marston Dragon', was published by Adrian Slack in 1986 and registered in 2001.[7]

See also

References

  1. ^ "Drosera binata". Australian Plant Name Index, IBIS database. Centre for Plant Biodiversity Research, Australian Government.
  2. ^ Labillardiere, J.J.H. de (1805) Novae Hollandiae Plantarum Specimen 1(9-10): 78, t. 105
  3. ^ (xls). Botanical Society of Britain and Ireland. Archived from the original (xls) on 2015-06-26. Retrieved 2014-10-17.
  4. ^ a b c Salmon, B. 2001. Carnivorous Plants of New Zealand. Ecosphere Publications.
  5. ^ a b c d e f Gilbert, I. 1984. Drosera binata. Carnivorous Plant Newsletter, 13(3): 74-76.
  6. ^ a b c Rice, B. 2010. Any other Drosera species. The Carnivorous Plant FAQ v. 11.5. Retrieved 25 January 2010.
  7. ^ a b c Schlauer, J. 2010. World Carnivorous Plant List - Nomenclatural Synopsis of Carnivorous Phanerogamous Plants. Retrieved 25 January 2010.
  8. ^ "Drosera binata". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. Retrieved 25 January 2010.
  9. ^ a b Mazrimas, J. A. 1976. The Drosera binata complex. Carnivorous Plant Newsletter, 5(1): 15.
  10. ^ Darwin, C. 1875. Insectivorous Plants. London: John Murray. pp. 281-282.
  11. ^ Ashley, G. 1975. The search for the 27 point Drosera binata. Carnivorous Plant Newsletter, 4(3): 48.

External links

  • Drosera binata Occurrence data from AVH

drosera, binata, commonly, known, forked, sundew, fork, leaved, sundew, large, perennial, sundew, native, australia, zealand, specific, epithet, latin, having, pairs, reference, leaves, which, dichotomously, divided, forked, scientific, classificationkingdom, . Drosera binata commonly known as the forked sundew 3 or fork leaved sundew 4 is a large perennial sundew native to Australia and New Zealand The specific epithet is Latin for having pairs a reference to the leaves which are dichotomously divided or forked 4 Drosera binataScientific classificationKingdom PlantaeClade TracheophytesClade AngiospermsClade EudicotsOrder CaryophyllalesFamily DroseraceaeGenus DroseraSubgenus Drosera subg Phycopsis Planch SchlauerSpecies D binataBinomial nameDrosera binataLabill 1 2 Occurrence data from AVHSynonymsDismophyla binata Labill Raf Drosera cunninghamii Walp Drosera dichotoma Banks amp Sol ex Sm Drosera flagellifera Colenso Drosera pedata Pers Like all sundews it is a Carnivorous plant It is unique among sundews in having narrow branching leaves It is the only species in the Drosera subgenus Phycopsis D binata occurs naturally in Australia primarily in coastal areas from Fraser Island in Queensland southwards down through New South Wales and Victoria to Tasmania and the south east corner of South Australia The range of this species extends to New Zealand where it is common below an elevation of 1000 metres being found in both the North and South Islands Stewart Island Rakiura and farther afield on the Chathams 4 Some populations go dormant in the winter while others are truly tropical Contents 1 Taxonomy and botanical history 2 See also 3 References 4 External linksTaxonomy and botanical history EditPlants similar to the type specimen commonly referred to as the T form were first collected in 1792 by the French exploration of Australia s southern coast led by Bruni d Entrecasteaux The naturalist on board that expedition Jacques Labillardiere first described D binata in his 1804 publication on the flora of Australia Novae Hollandiae Plantarum Specimen The T form so named for its single leaf bifurcation spreading into a T shape is a robust plant from temperate zones that can grow up to 30 cm 12 in and has green foliage that becomes redder with age This form has been described as being genetically stable 5 6 The second observed form commonly referred to as var dichotoma is similar to the T form but the foliage is yellower and the leaf typically divides into four terminal leaf points though it has been known to produce as many as eight leaf points 5 6 It was first validly described in an 1819 volume of Rees s Cyclopaedia by James Edward Smith as D dichotoma based on the description by Joseph Banks and Daniel Solander This name however has since been reduced to synonymy with D binata 7 8 This morphological form was first published as var dichotoma by J A Mazrimas in a 1976 volume of the Carnivorous Plant Newsletter but the publication of that name was invalid under the rules of the International Code of Botanical Nomenclature Even though the name is not valid it is still widely used in cultivation to refer to this D binata form 5 7 9 This was one of many plants used by Charles Darwin in his investigation of carnivorous plants for his 1875 book Insectivorous Plants 5 10 A third described form often called D binata f multifida has even more leaf divisions bifurcating several times to produce anywhere from eight to 16 or even 30 terminal leaf points 5 6 This too was published by J A Mazrimas in the same 1976 volume of the Carnivorous Plant Newsletter as var multifida referring to the description of a 27 point D binata found by George Ashley and published in a 1975 volume of the Carnivorous Plant Newsletter 9 11 Neither of these names were validly published but again they remain in use among carnivorous plant growers A final form known for producing up to 40 terminal leaf points is frequently titled f extrema another name that has never been validly published but remains in use 5 Two cultivars of D binata have been named Drosera Giant is a particularly large form of the var dichotoma type and was published by Peter D Amato in 1998 and registered in 1999 The other Drosera Marston Dragon was published by Adrian Slack in 1986 and registered in 2001 7 See also EditList of Drosera species Taxonomy of DroseraReferences Edit Drosera binata Australian Plant Name Index IBIS database Centre for Plant Biodiversity Research Australian Government Labillardiere J J H de 1805 Novae Hollandiae Plantarum Specimen 1 9 10 78 t 105 BSBI List 2007 xls Botanical Society of Britain and Ireland Archived from the original xls on 2015 06 26 Retrieved 2014 10 17 a b c Salmon B 2001 Carnivorous Plants of New Zealand Ecosphere Publications a b c d e f Gilbert I 1984 Drosera binata Carnivorous Plant Newsletter 13 3 74 76 a b c Rice B 2010 Any other Drosera species The Carnivorous Plant FAQ v 11 5 Retrieved 25 January 2010 a b c Schlauer J 2010 World Carnivorous Plant List Nomenclatural Synopsis of Carnivorous Phanerogamous Plants Retrieved 25 January 2010 Drosera binata International Plant Names Index IPNI Royal Botanic Gardens Kew Harvard University Herbaria amp Libraries Australian National Botanic Gardens Retrieved 25 January 2010 a b Mazrimas J A 1976 The Drosera binata complex Carnivorous Plant Newsletter 5 1 15 Darwin C 1875 Insectivorous Plants London John Murray pp 281 282 Ashley G 1975 The search for the 27 point Drosera binata Carnivorous Plant Newsletter 4 3 48 Wikimedia Commons has media related to Drosera binata External links EditNZ Carnivorous plants society website page about this species Drosera binata Occurrence data from AVH Retrieved from https en wikipedia org w index php title Drosera binata amp oldid 1097264490, wikipedia, wiki, book, books, library,

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