Drosera binata

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Drosera binata
Drosera binata.jpg
Drosera binata39841374413 08cb2d1a90 o.jpg
Scientific classification OOjs UI icon edit-ltr.svg
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
Drosera binataDistMap12.png
Occurrence data from AVH
Synonyms

Drosera binata, commonly known as the forked sundew or fork-leaved sundew. It 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. [3]

Contents

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. [3] 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. [4] [5]

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. [4] [5] 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. [6] [7] 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. [4] [6] [8] This was one of many plants used by Charles Darwin in his investigation of carnivorous plants for his 1875 book Insectivorous Plants . [4] [9]

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. [4] [5] 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. [8] [10] 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. [4]

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. [6]

See also

Related Research Articles

<i>Drosera</i> Genus of carnivorous flowering plants in the family Droseraceae

Drosera, which is commonly known as the sundews, is one of the largest genera of carnivorous plants, with at least 194 species. These members of the family Droseraceae lure, capture, and digest insects using stalked mucilaginous glands covering their leaf surfaces. The insects are used to supplement the poor mineral nutrition of the soil in which the plants grow. Various species, which vary greatly in size and form, are native to every continent except Antarctica.

<i>Cephalotus</i> Genus of carnivorous plants

Cephalotus is a genus which contains one species, Cephalotus follicularis the Albany pitcher plant, a small carnivorous pitcher plant. The pit-fall traps of the modified leaves have inspired the common names for this plant, which include 'Albany pitcher plant", "Western Australian pitcher plant", "Australian pitcher plant", or "fly-catcher plant." It is an evergreen herb that is endemic to peaty swamps in the southwestern corner of Western Australia.

<i>Drosera spatulata</i> Species of plant

Drosera spatulata, the spoon-leaved sundew, is a variable, rosette-forming sundew with spoon-shaped leaves. The specific epithet is Latin for "spatula shaped," a reference to the form of the leaves. This sundew has a large range and occurs naturally throughout Southeast Asia, southern China and Japan, Micronesia, Papua New Guinea, eastern Australia, Tasmania and New Zealand. Variants are often known by the localities in which they are found. The plant does not form hibernacula in winter, and is easily grown using the same methods as Drosera capensis.

<i>Drosera regia</i> Species of carnivorous plant in the family Droseraceaea endemic to a single valley in South Africa

Drosera regia, commonly known as the king sundew, is a carnivorous plant in the sundew genus Drosera that is endemic to a single valley in South Africa. The genus name Drosera comes from the Greek word droseros, meaning "dew-covered". The specific epithet regia is derived from the Latin for "royal", a reference to the "striking appearance" of the species. Individual leaves can reach 70 cm (28 in) in length. It has many unusual relict characteristics not found in most other Drosera species, including woody rhizomes, operculate pollen, and the lack of circinate vernation in scape growth. All of these factors, combined with molecular data from phylogenetic analysis, contribute to the evidence that D. regia possesses some of the most ancient characteristics within the genus. Some of these are shared with the related Venus flytrap (Dionaea muscipula), which suggests a close evolutionary relationship.

<i>Drosera anglica</i> Species of carnivorous flowering plant in the family Droseraceae

Drosera anglica, commonly known as the English sundew or great sundew, is a carnivorous flowering plant species belonging to the sundew family Droseraceae. It is a temperate species with a circumboreal range, although it does occur as far south as Japan, southern Europe, and the island of Kauai in Hawaii, where it grows as a tropical sundew. It is thought to originate from an amphidiploid hybrid of D. rotundifolia and D. linearis, meaning that a sterile hybrid between these two species doubled its chromosomes to produce fertile progeny which stabilized into the current D. anglica.

<i>Eucalyptus ovata</i> Species of plant

Eucalyptus ovata, commonly known as swamp gum or black gum, is a small to medium-sized tree species that is endemic to south-eastern Australia. It has mostly smooth bark, glossy green, lance-shaped to egg-shaped adult leaves, green flower buds in groups of seven, white flowers and conical to bell-shaped fruit.

<i>Utricularia dichotoma</i> Species of plant

Utricularia dichotoma, commonly known as fairy aprons, is a variable, perennial species of terrestrial bladderwort. It is a widespread species with mauve or purple fan-shaped flowers on a slender stalk and usually grows in wet locations.

<i>Brachyscome ciliaris</i> Species of plant

Brachyscome ciliaris, commonly known as variable daisy, is a small bushy perennial herb with a prominent flower, which occurs throughout most of temperate Australia

There are fourteen species of carnivorous plants occurring in New Zealand, and four species that have been known to occur in the past.

<i>Novae Hollandiae Plantarum Specimen</i>

Novae Hollandiae Plantarum Specimen is a two-volume work describing the flora of Australia. Facsimiles of the originals can be found in the online Biodiversity Heritage Library (Vol.1) and Vol 2).

Relation du Voyage à la Recherche de la Pérouse is an 1800 book that gives an account of the 1791-1793 d'Entrecasteaux expedition to Australasia. The title refers to the search for La Pérouse, who disappeared in the region in 1788, a popular, though unsuccessful, object of the mission. Many of the discoveries made by the scientists attached to the expedition were published in the two volumes. The author, Jacques Labillardière, was a French botanist on the voyage, engaged to collect and describe the flora of the continent. The work includes some of the earliest descriptions of Australian flora and fauna, and an account of the indigenous peoples of Tasmania.

<i>Drosera zonaria</i> Species of carnivorous plant

Drosera zonaria, the painted sundew, is a perennial tuberous species in the carnivorous plant genus Drosera and is endemic to south-west Western Australia from near Perth southeast to near Esperance. It grows in a tight rosette approximately 5 to 7 cm in diameter with 20 to 30 green to red leaves that are arranged in concentric layers. The leaves are typically 1 cm wide and are usually described as being "kidney-shaped" with crimson leaf margins. It grows in deep silica sands in open woodland or coastal heathland and only flowers after a bush fire, which is speculated to be caused by the release of ethylene. Its white, sweetly perfumed flowers, which are very similar to those of D. erythrorhiza, emerge on 4 to 5 cm tall scapes. As with most other tuberous Drosera species, D. zonaria will die back during the dry summer months and retreat to the fleshy tuber 10 to 30 cm below ground.

<i>Drosera gigantea</i> Species of carnivorous plant

Drosera gigantea, the giant sundew, is an erect perennial tuberous species in the carnivorous plant genus Drosera that is endemic to Western Australia. It grows in sandy soils at the margins of swamps and near granite outcrops along the Western Australian coast from Albany north to just south of Geraldton. D. gigantea produces small shield-shaped leaves along many lateral branches that look like a small tree. Individual plants can grow up to 0.2–1 m (0.7–3.3 ft) tall. Because of its tall, tree-like form, it is considered one of the largest Drosera species. It is also easily cultivated and enjoys damp, humid conditions often provided in greenhouses. White flowers emerge from August to November. The red tubers of this species can grow to be 3.8 cm (1.5 in) in diameter and may be a metre below ground.

<i>Drosera glanduligera</i> Species of carnivorous plant

Drosera glanduligera, commonly known as the pimpernel sundew or scarlet sundew, is a species of carnivorous plant endemic to southern Australia. It is an ephemeral annual plant that grows in the winter and flowers from August to November.

<i>Drosera falconeri</i> Species of carnivorous plant

Drosera falconeri is a carnivorous plant in the family of Droseraceae. It is endemic to the Northern Territory of Australia.

<i>Pultenaea juniperina</i> Species of legume

Pultenaea juniperina, commonly known as prickly bush-pea or prickly beauty is a species of flowering plant in the family Fabaceae and is endemic to south-eastern Australia. It is an erect, spiky shrub with hairy stems, linear to narrow elliptic leaves with stipules at the base, and yellow-orange and red flowers.

<i>Persoonia juniperina</i> Species of flowering plant

Persoonia juniperina, commonly known as prickly geebung, is a species of flowering plant in the family Proteaceae and is endemic to south-eastern Australia. It is a small erect to low-lying shrub with smooth bark, hairy new branches, linear leaves, yellow flowers borne singly or in groups of up to forty in leaf axils, and yellowish green to purplish fruit.

<i>Pomaderris elliptica</i> Species of shrub

Pomaderris elliptica, commonly known as yellow dogwood or smooth pomaderris, is a species of flowering plant in the family Rhamnaceae and is endemic to south-eastern Australia. It is a shrub with densely hairy branchlets, egg-shaped or elliptic leaves, and pale yellow flowers.

<i>Carnivorous Plants of Australia</i>

Carnivorous Plants of Australia is a three-volume work on carnivorous plants by Allen Lowrie. The three tomes were published in 1987, 1989, and 1998, by University of Western Australia Press.

<i>Hibbertia acicularis</i> Species of flowering plant

Hibbertia acicularis, commonly known as prickly guinea-flower, is a species of flowering plant in the family Dilleniaceae and is endemic to eastern Australia. It is an erect or prostrate shrub with linear to lance-shaped leaves and yellow flowers arranged singly in leaf axils with the six to eight stamens joined at the base, in a single cluster.

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. 1 2 Salmon, B. 2001. Carnivorous Plants of New Zealand. Ecosphere Publications.
  4. 1 2 3 4 5 6 Gilbert, I. 1984. Drosera binata. Carnivorous Plant Newsletter , 13(3): 74-76.
  5. 1 2 3 Rice, B. 2010. Any other Drosera species. The Carnivorous Plant FAQ v. 11.5. Retrieved 25 January 2010.
  6. 1 2 3 Schlauer, J. 2010. World Carnivorous Plant List - Nomenclatural Synopsis of Carnivorous Phanerogamous Plants Archived 2016-09-18 at the Wayback Machine . Retrieved 25 January 2010.
  7. "Drosera binata". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens . Retrieved 25 January 2010.
  8. 1 2 Mazrimas, J. A. 1976. The Drosera binata complex. Carnivorous Plant Newsletter, 5(1): 15.
  9. Darwin, C. 1875. Insectivorous Plants. London: John Murray. pp. 281-282.
  10. Ashley, G. 1975. The search for the 27 point Drosera binata. Carnivorous Plant Newsletter , 4(3): 48.