Drosera subg. Lasiocephala

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Drosera subg. Lasiocephala
Drosera derbyensis ne1.JPG
Drosera derbyensis , a member of subgenus Lasiocephala
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. Lasiocephala
(Planch.) J.Schlauer
Type species
D. petiolaris
R.Br. ex DC.
Species

Drosera banksii
Drosera brevicornis
Drosera broomensis
Drosera caduca
Drosera darwinensis
Drosera derbyensis
Drosera dilatatopetiolaris
Drosera falconeri
Drosera fulva
Drosera kenneallyi
Drosera lanata
Drosera ordensis
Drosera paradoxa
Drosera petiolaris

Contents

Synonyms
  • D. sect. LasiocephalaPlanch.
  • D. ser. Lasiocephala(Planch.)  Diels

Drosera subg. Lasiocephala, sometimes collectively known as the petiolaris-complex, [1] is a subgenus of 14 species in the genus Drosera . These species are distinguished by their subpeltate to peltate lamina. [2]

Taxonomy

The subgenus was first formally described by Jules Émile Planchon in 1848 as a section. [3] Planchon included the species D. banksii in his arrangement, but it has been argued that D. banksii belongs in a clade with the more-closely allied D. subtilis . [1] Ludwig Diels reclassified the genus in his 1906 monograph of the family and recognizing this taxon as a series under section Rossolis. [4] In 1996, taxonomist Jan Schlauer argued for the recognition of this taxon at the rank of subgenus, noting that these closely related species share many affinities with subgenus Drosera but are different enough to warrant subgeneric status. [2] All species in this subgenus are native to northern Australia except for D. petiolaris , which is more widely distributed to as far as New Guinea. The plants in this subgenus or petiolaris-complex mostly look like variations of the eponymous D. petiolaris. [1]

ImageScientific nameDistribution
DroseraBanksiiLaminaDetail.jpg Drosera banksii R.Br. ex DC.northern Australia (Queensland, the Northern Territory, and Western Australia) and Southeast Asia (Papua New Guinea and Western New Guinea).
Drosera brevicornis LowrieAustralia(Northern Territory and Western Australia. )
DroseraBroomensisHabitus.jpg Drosera broomensis LowrieWestern Australia.
Drosera caduca LowrieWestern Australia.
Drosera darwinensis.jpg Drosera darwinensis LowrieNorthern Territory
Drosera derbyensis ne2.JPG Drosera derbyensis LowrieWestern Australia.
DroseraDilatatiopetiolarisJuvenilHabit.jpg Drosera dilatatopetiolaris K.KondoWestern Australia and the Northern Territory.
Drosera falconeri Darwiniana.jpg Drosera falconeri Tsang ex K.KondoNorthern Territory
D. Fulva Closeup.jpg Drosera fulva Planch.Northern Territory
Drosera kenneallyi habitus.jpg Drosera kenneallyi LowrieWestern Australia
Drosera lanata 2 Darwiniana.jpg Drosera lanata K.KondoNorthern Territory and Queensland
Drosera ordensis.jpg Drosera ordensis LowrieWestern Australia
Drosera paradoxa (1).JPG Drosera paradoxa LowrieNorthern Territory and Western Australia.
Drosera petiolaris flower 2 Darwiniana.jpg Drosera petiolaris Western Australia, the Northern Territory, and Queensland, and New Guinea;

See also

Related Research Articles

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

Drosera adelae, commonly known as the lance-leaved sundew, is a carnivorous plant in the genus Drosera that is endemic to Queensland, Australia.

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

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.

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

Drosera monticola is a perennial carnivorous plant species in the genus Drosera, the sundews. This species is endemic to a single mountain range in Western Australia.

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

Drosera stolonifera, sometimes referred to as the leafy sundew, is a tuberous perennial species in the genus Drosera that is endemic to Western Australia. It produces 2 to 3 semi-erect lateral stems that grow 10 to 15 cm long. It is most closely related to D. purpurascens, but differs by several characteristics including height and petiole length. It is native to a number of swampy locations around Perth south to Pinjarra. It grows in peaty water-logged soils in swamp heathland and flowers from September to October. After a bushfire it will flower en masse.

<i>Drosera <span style="font-style:normal;">sect.</span> Stolonifera</i> Group of carnivorous plants

Drosera sect. Stolonifera is a section of ten tuberous perennial species in the genus Drosera that are endemic to south-west Western Australia. The species all have a similar growth habit and all have fan-shaped leaves, but the morphological differences and lack of natural hybrids support the division of the D. stolonifera species complex.

<i>Drosera <span style="font-style:normal;">sect.</span> Erythrorhiza</i> Group of carnivorous plants

Drosera sect. Erythrorhiza is a section of 14 species of tuberous species in the genus Drosera. It represents a natural group of all the rosetted tuberous Drosera. Most species are endemic to Western Australia, but D. aberrans, D. praefolia, D. schmutzii, and D. whittakeri are also found in eastern Australia.

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

Drosera andersoniana, the sturdy sundew, is an erect perennial tuberous species in the genus Drosera that is endemic to Western Australia. It produces a basal rosette of leaves similar to that of D. peltata and the stem grows to 8–25 cm (3–10 in). Its pink-white to red flowers emerge from August to September. D. andersoniana grows in loamy soils near granite outcrops.

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

Drosera bicolor is an erect perennial tuberous species in the genus Drosera that is endemic to Western Australia. It produces a basal rosette of leaves similar to that of D. peltata and the stem grows to 11 cm (4 in) high. Its white flowers that have a red spot near the petal base emerge from September to October. D. bicolor grows in deep silica sand on heathland along the upper Phillips River and south-east of Lake King.

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

Drosera erythrogyne is a scrambling or climbing perennial tuberous species in the genus Drosera that is endemic to Western Australia. It grows in soils that are peat-sand to loam and occurs in an area along the southern Western Australian coast west of Albany in swamps or near granite outcrops. It produces small leaves along a long, scrambling stem that can grow to 2–3 m (7–10 ft) long. White flowers emerge from August to October.

<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 graniticola</i> Species of carnivorous plant

Drosera graniticola is an erect perennial tuberous species in the carnivorous plant genus Drosera that is endemic to Western Australia. It grows 10–20 cm (4–8 in) high near granite outcrops. White flowers emerge from August to September.

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

Drosera heterophylla, the swamp rainbow, is an erect perennial tuberous species in the carnivorous plant genus Drosera that is endemic to Western Australia. It grows in shallow water swamps or wet clay flats near granite outcrops and occurs in the vicinity of Perth and to its north. D. heterophylla produces small leaves along an erect stem that can be 10–30 cm (4–12 in) tall. It is the only species in the genus that produces many-petaled flowers. These white flowers emerge from June to September.

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

Drosera huegelii, the bold sundew, is an erect perennial tuberous species in the carnivorous plant genus Drosera that is endemic to Western Australia. It grows in sandy soils in winter-wet depressions and margins of swamps and occurs along the south-west coast of Australia. D. huegelii produces small, bell-shaped leaves along an erect stem that can be 10–50 cm (4–20 in) tall. White to cream-coloured flowers emerge from June to September.

Drosera intricata is a scrambling or climbing perennial tuberous species in the carnivorous plant genus Drosera that is endemic to Western Australia. It grows in clay-sand soils on swamp margins, or other habitats that are seasonally wet. D. intricata produces small carnivorous leaves along a glabrous stem that can be 25–40 cm (10–16 in) tall. Its 3-12 yellow flowers emerge from September to October. It gains its species name, intricata, from its twining or winding habit.

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

Drosera lanata is a carnivorous plant in the genus Drosera and is endemic to the Northern Territory and Queensland in Australia. Its leaves are arranged in a compact basal rosette. Narrow linear petioles less than 2 mm wide emerge from the center of the rosette and hold carnivorous leaves at the end. Both petioles and the center of the rosette are densely covered in silvery dendritic hairs. These dendritic hairs afford the plant insulation and allow it to trap morning dew for additional moisture during the dry season. The leaf lamina is maroon-red and 2 mm long by 2.5 mm wide.

Drosera zeyheri is a species in the carnivorous plant genus Drosera that is endemic to the Cape Provinces of South Africa. Some botanists treat this species to be a form of D. cistiflora. It differs from typical D. cistiflora specimens by being smaller, sometimes having cauline leaves on the short stems with white, pink, or red flowers. Botanist Fernando Rivadavia has said that he believes of all the forms and varieties in the D. cistiflora complex, D. zeyheri could possibly merit distinction at the species rank. He found it easy to distinguish it from D. cistiflora by its mostly stemless habit, though it often does present one to three leaves on the flower scape. Drosera zeyheri was first described by Terence Macleane Salter in a 1940 volume of the Journal of South African Botany.

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

Drosera trinervia is a species in the carnivorous plant genus Drosera that is endemic to the Cape Provinces of South Africa. It was first described by Kurt Polycarp Joachim Sprengel in his 1820 work Neue Entdeckungen im ganzen Umfang der Pflanzenkunde.

Andreas Fleischmann is a German botanist specialising in carnivorous plants, particularly Droseraceae and Lentibulariaceae. He has (co-)published at least 46 new taxa including 14 species of Drosera (sundews), 7 species of Genlisea, 8 species of Heliamphora and 3 species of Pinguicula (butterworts).

References

  1. 1 2 3 Rice, B. A. (2008). The Carnivorous Plant FAQ v. 11.5. Accessed online: 21 June 2010.
  2. 1 2 Schlauer, J. 1996. A dichotomous key to the genus Drosera L. (Droseraceae). Carnivorous Plant Newsletter , 25(3):67-88.
  3. "Plant name details". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens . Retrieved 21 June 2010.
  4. "Plant name details". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens . Retrieved 21 June 2010.