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.
Drosera pedicellaris is a pygmy species of the sundew genus (Drosera). It was discovered in 1997 and described in 2002 by Allen Lowrie.
The genus Drosera was divided in 1994 by Seine & Barthlott into three subgenera and 11 sections on the basis of morphological characteristics.
Drosera broomensis is a small, perennial carnivorous plant in the genus Drosera that is endemic to Western Australia.
Drosera callistos is a species of pygmy sundew from Western Australia. The specific epithet callistos is from the Greek word callistos meaning beautiful.
Drosera macrophylla, the showy sundew, is a perennial tuberous species in the genus Drosera that is endemic to Western Australia. It grows in a rosette with leaves 4 cm (2 in) long and 2 cm (1 in) wide. It is a common species east of Perth. It grows in loam soils. It flowers from June to October. D. macrophylla was first described by John Lindley in his 1839 publication A sketch of the vegetation of the Swan River Colony. In 1992, Allen Lowrie and Sherwin Carlquist described a new subspecies, D. macrophylla subsp. monantha, which is distinguished from D. macrophylla subsp. macrophylla by its single-flowered or rarely biflowered inflorescences. Subspecies monantha is abundant in the Bruce Rock/Merredin region.
Drosera erythrorhiza, the red ink sundew, is a perennial tuberous species in the carnivorous plant genus Drosera that is endemic to Western Australia. It grows in a rosette and is distinguished from the other species in section Erythrorhiza by its many-flowered cymose inflorescences with up to 50 individual flowers. D. erythrorhiza was first described by John Lindley in his 1839 publication A sketch of the vegetation of the Swan River Colony. In 1992, N. G. Marchant and Allen Lowrie described three new subspecies, thus also creating the autonym D. erythrorhiza subsp. erythrorhiza. The subspecies were separated from this variable species mostly by leaf morphology and distribution.
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.
Drosera marchantii is an erect perennial tuberous species in the carnivorous plant genus Drosera. It is endemic to Western Australia and grows in a variety of habitats, including swampy areas and hilltops in laterite-silica sand soils. D. marchantii produces small, circular, peltate carnivorous leaves along stiff stems that can be 10–40 cm (4–16 in) high. Its pink flowers emerge from June to October.
Drosera menziesii, the pink rainbow, is an erect or scrambling perennial tuberous species in the carnivorous plant genus Drosera. It is endemic to Western Australia and grows in a variety of habitats, including winter-wet depressions, swamps, and granite outcrops in clay or peat sand soils or loam. D. menziesii produces small, circular carnivorous leaves along an undulating erect stem that can be .05–1.1 m (0.2–3.6 ft) high. Its pink flowers emerge from July to November.
Drosera moorei is a scrambling or climbing perennial tuberous species in the carnivorous plant genus Drosera. It is endemic to Western Australia and grows near granite outcrops in sandy loam. D. moorei produces small, circular, peltate carnivorous leaves along glabrous stems that can be 12–35 cm (5–14 in) long. Inflorescences have two to ten yellow flowers and bloom from September to October.
Drosera salina is an erect perennial tuberous species in the carnivorous plant genus Drosera. It is endemic to Western Australia and is only found in salt-free sand on the margins of salt lakes in a few locations north of Albany east to north-west of Esperance. The specific epithet, salina, refers to the salt lake margins that this species inhabits. D. salina produces small carnivorous leaves along stems that can be 7 cm (3 in) high. White flowers bloom from July to September.
Drosera sulphurea, the sulphur-flowered sundew, is a scrambling perennial tuberous species in the carnivorous plant genus Drosera. It is endemic to Western Australia and is found in coastal areas in sandy loam, often among Cephalotus. D. sulphurea produces small, shield-shaped carnivorous leaves along stems that can be 40–60 cm (16–24 in) high. Yellow flowers bloom in September.
Drosera zigzagia is an erect perennial tuberous species in the carnivorous plant genus Drosera. It is endemic to Western Australia and is found on the margins of salt lakes in brown sandy loam, often associated with D. salina, Stylidium insensitivum, S. pulviniforme, Levenhookia leptantha, and Frankenia species. Drosera zigzagia produces small, solitary carnivorous leaves that alternate along a zigzag stem, which can be 5–7 cm (2.0–2.8 in) high. Yellow flowers are borne on 4–9-flowered inflorescences that bloom from August to September.
Drosera sect. Ergaleium is a section of 26 species that are erect or scrambling tuberous plants in the genus Drosera. This section represents a natural group and are taxonomically monophyletic.
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.
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.
Australia has one of the world's richest carnivorous plant floras, with around 187 recognised species from 6 genera.
Drosera citrina is a pygmy sundew, a type of carnivorous plant. It is native to Western Australia. The Latin specific epithet citrina means "lemon coloured", refrring to the colour of the flowers. It is closely related to Drosera nivea, which was considered a variety of D. citrina in the past called Drosera citrina var. nivea
Drosera dichrosepala, commonly known as the rusty sundew, is a pygmy sundew from Western Australia. It is a carnivorous plant. The specific epithet dichrosepala is a combination of the Greek words dis, meaning double, and chroia, meaning colour, as well as the Latin sepalum meaning sepal, it refers to the plant's sepals being bi-coloured. It has two subspecies: D. dichrosepala ssp.dichrosepala and D. dichrosepala ssp. enodes.
