Stylidium tenellum is a dicotyledonous plant that belongs to the genus Stylidium. It is an annual plant that grows from 5 to 27 cm tall. The obovate or elliptical leaves, about 6-14 per plant, are scattered along the elongate, glabrous stem and are generally 3.5-8.5 mm long and 0.8-2.5 mm wide. Scapes are absent. Inflorescences are 2–8 cm long and produce white, pink, or mauve flowers that bloom from September to December in their native range. S. tenellum is endemic to Southeast Asia and its distribution ranges from southern India to southern China and south to Sumatra. In China it's known from Guangdong, Yunnan, and southern Fujian provinces. Its habitat is recorded as being seasonal swamps and is often reported to grow near rice paddies. It is usually found growing at low altitudes but has been recorded from elevations as high as 1100 metres on Sumatra. S. tenellum is most closely related to S. diffusum.
Stylidium alsinoides is a dicotyledonous plant that belongs to the family Stylidiaceae. It is an erect annual plant that grows from 18 to 30 cm tall. Obovate or elliptical leaves, about 20–100 per plant, are scattered along the elongate, glabrous stems. The leaves are generally 5.5–14 mm (0.22–0.55 in) long and 3–8 mm (0.12–0.31 in) wide. The bracts on the inflorescence can be as large as leaves and may be hard to distinguish them except for their growth habit: the leaves are alternate whereas the bracts are opposite.
Stylidium debile, commonly known as the frail triggerplant, is a carnivorous, dicotyledonous plant that belongs to the genus Stylidium. S. debile is endemic to coastal areas in Queensland and New South Wales, Australia.
Stylidium cordifolium is a dicotyledonous plant that belongs to the genus Stylidium. It is an erect annual plant that grows from 15 to 45 cm tall. Obovate or orbicular leaves, about 8-40 per plant, are scattered along the stems. The leaves are generally 3.5–8 mm long and about as wide. This species lacks a scape but has cymose inflorescences that are 4–13 cm long. Flowers are pink or red. S. cordifolium is found throughout tropical Australia, including northern Western Australia, in its typical habitat of swamp margins or moist sandy creekbanks. It flowers in the southern hemisphere from March to August. S. cordifolium is most closely related to S. javanicum, which has smaller leaves, sepals, capsules, and seeds. S. javanicum and S. cordifolium also differ in their distribution with S. javanicum's range not extending to Australia. Its conservation status has been assessed as data deficient.
Stylidium fluminense is a dicotyledonous plant that belongs to the genus Stylidium.
Stylidium javanicum is a dicotyledonous plant that belongs to the genus Stylidium. It is an erect annual plant that grows from 5 to 21 cm tall. Obovate or elliptical leaves, about 10-30 per plant, are scattered along the stems. The leaves are generally 1.7-4.5 mm long and 0.9-2.1 mm wide. This species lacks a scape but has cymose inflorescences that are 5–9 cm long. Flowers are pink or mauve. S. javanicum is found in Java, east Sumba island, and from eastern New Guinea. Its typical habitats are open boggy depressions and wet grassy fields at 20 to 500 metres above sea level. It flowers in the southern hemisphere from April to May. S. javanicum is most closely related to S. cordifolium, which has larger leaves, sepals, capsules, and seeds. S. javanicum and S. cordifolium also differ in their distribution with S. cordifolium's range endemic to northern Australia.
Stylidium tenerrimum is a dicotyledonous plant that belongs to the genus Stylidium. It is an erect annual plant that grows from 4 to 30 cm tall. Linear, oblanceolate, or deltate leaves, about 5-24 per plant, are scattered along the stems. The leaves are generally 1.2-4.8 mm long and 0.3-0.8 mm wide. This species lacks a scape but has cymose inflorescences that are 4–11 cm long. Flowers are white and red. S. tenerrimum is found around Darwin in the Northern Territory of Australia and the Victoria River, though it hasn't been recollected there since the type location was chosen. Its typical habitat is sandy soils that remain moist, associated with grasses and sedges. It flowers in the southern hemisphere from April to August. S. tenerrimum is most closely related to S. alsinoides, though it differs by its asymmetrical petals. In his revision of the subgenus Andersonia in 2000, A.R. Bean placed S. evolutum into synonymy and noted that the type specimen of S. mitrasacmoides was not located and thus the application of this synonym is not certain. Tony Bean assessed this species' conservation status as data deficient in 2000.
Stylidium accedens is a dicotyledonous plant that belongs to the genus Stylidium. S. accedens is found around and northeast of Katherine in the Northern Territory of Australia.
Stylidium muscicola is a dicotyledonous plant that belongs to the genus Stylidium that was described by Ferdinand von Mueller in 1859. It is an erect annual plant that grows from 5 to 33 cm tall. Obovate or orbicular leaves, about 4-20 per plant, form terminal rosettes with some scattered along the stems. The leaves are generally 6–33 mm long and 5–28 mm wide. This species generally has one to eight scapes and cymose inflorescences that are 3–17 cm long. Flowers are white, pink, or mauve. S. muscicola's native range is concentrated in and around western Kimberley in Western Australia and extends to the northern parts of the Northern Territory and east almost to Queensland. Its typical habitat is a sheltered area along a sandstone ridge in sandy soils that remain moist in the dry seasons. It flowers in the southern hemisphere from February to September.
Stylidium pachyrrhizum is a dicotyledonous plant that belongs to the genus Stylidium that was described by Ferdinand von Mueller in 1859. It is an erect annual plant that grows from 15 to 40 cm tall. Obovate or oblanceolate leaves, about 5-30 per plant, are scattered along the stems. The leaves are generally 13–100 mm long and 3.5–24 mm wide. This species generally has one to six scapes and cymose inflorescences that are 13–33 cm long. Flowers are white or pink. S. pachyrrhizum's distribution ranges from western Kimberley in Western Australia and extends to Groote Eylandt off the east coast of the Northern Territory. Its typical habitats are swamp margins or seepage areas near sandy or rocky creeks. It flowers in the southern hemisphere from March to June. S. pachyrrhizum is most closely related to S. schizanthum and S. stenophyllum and some specimens are hard to differentiate between S. pachyrrhizum and S. schizanthum.
Stylidium schizanthum is a dicotyledonous plant that belongs to the genus Stylidium that was described by Ferdinand von Mueller in 1859. It is an erect annual plant that grows from 9 to 30 cm tall. Obovate, orbicular, or oblanceolate leaves, about 3-13 per plant, form basal rosettes. The leaves are generally 3.5–23 mm long and 1.5–12 mm wide. This species generally has one to four scapes and cymose inflorescences that are 9–30 cm long. Flowers are white, pink, mauve, or yellow. S. scizanthum's distribution ranges from the Kimberley region in Western Australia through the Northern Territory and into northern Queensland. It has been reported as far south as Mount Surprise and even in southern New Guinea. Its typical habitats are moist sand in Eucalyptus or Melaleuca communities, near creekbanks, or associated with sandstone landscapes. It flowers in the southern hemisphere from February to October. S. schizanthum is closely related to both S. pachyrrhizum and S. lobuliflorum.
Stylidium simulans is a dicotyledonous plant that belongs to the genus Stylidium that was described by Sherwin Carlquist in 1979. It is an erect annual plant that grows from 7 to 11 cm tall. Orbicular leaves, about 4-10 per plant, form basal rosettes. The leaves are generally 3–5.5 mm long and 1.5-3.5 mm wide. This species generally has one or two scapes and cymose inflorescences that are 7–11 cm long. Flowers are pale pink or mauve. S. simulans is endemic to the Arnhem Land plateau in the Northern Territory of Australia, but not much more is known about its distribution as it is only known from around its type location. Its reported habitat is in shallow sandy soils on a sandstone plateau. It flowers in the southern hemisphere in June. S. simulans is closely related to S. accedens. Its conservation status has been assessed as data deficient.
Stylidium tenerum, the swamp triggerplant, is a dicotyledonous plant that belongs to the genus Stylidium that was described by Curt Polycarp Joachim Sprengel in 1826. Robert Brown had described this species in 1810 under the name S. tenellum, a name which had already been used for another species in 1805 by Olof Swartz. To add to the confusion, Rica Erickson had described and illustrated this taxon in 1958 under the name S. uliginosum, another currently accepted name for a related species.
Stylidium dunlopianum is a dicotyledonous plant that belongs to the genus Stylidium. It is an erect perennial plant that grows from 15 to 50 cm tall. Obovate leaves, about 6-12 per plant, form a basal rosette with some scattered along the stem. The leaves are generally 20–60 mm long and 7–19 mm wide. This species generally has one to five scapes and cymose inflorescences that are 13–40 cm long. Flowers are pink or mauve. S. dunlopianum's distribution ranges from the Mitchell River area in Western Australia east to the Kakadu National Park in the Northern Territory. Its typical habitats include sandy or black organic soils along creekbanks, near rainforests, or in seepage areas in Melaleuca leucadendra swamps. It flowers in the southern hemisphere from May to November. S. dunlopianum is most closely related to S. rotundifolium, but differs most significantly by its thickened stem base and growth habit. S. dunlopianum is a perennial whereas S. rotundifolium is an annual. Its conservation status has been assessed as data deficient.
Stylidium fimbriatum is a dicotyledonous plant that belongs to the genus Stylidium. It is an erect annual plant that grows from 15 to 30 cm tall. Oblanceolate leaves, about 16 per plant, form a basal rosette around the compressed stems. The leaves are generally 5–20 mm long and 2–7 mm wide. This species generally has one or two scapes and cymose inflorescences that are 15–30 cm long. Flowers are pink with yellow highlights. S. fimbriatum's distribution is confined to the area around Bachsten Creek in the Kimberley region in Western Australia. Its typical habitat is herbfields that are seasonally wet.
Stylidium rotundifolium is a dicotyledonous plant that belongs to the genus Stylidium. It is an erect annual plant that grows from 4 to 18 cm tall. Obovate or oblanceolate leaves, about 4-17 per plant, form a basal rosette around the compressed stem. The leaves are generally 5–29 mm long and 3–10 mm wide. This species generally has one to ten scapes and cymose inflorescences that are 4–18 cm long. Flowers are pink or white. S. rotundifolium's wide, sporadic distribution ranges from the Kimberley region in Western Australia east to northeastern Queensland with a significant population near Taroom, Queensland. Its typical habitats include damp sandy soils on creekbanks, receding waterholes, or Melaleuca woodlands. It flowers in the southern hemisphere from April to October. S. rotundifolium is most closely related to S. dunlopianum.
Stylidium capillare is a dicotyledonous plant that belongs to the genus Stylidium. It is an annual plant that grows from 6 to 13 cm tall. Obovate or orbicular leaves, about 4-7 per plant, form basal rosettes around the compressed stems. The leaves are generally 1.5–5 mm long and 1–3 mm wide. Petioles are absent. This species usually has one to two scapes per plant and 6–13 cm long inflorescences. Flowers are white and bloom from March to June in the southern hemisphere. S. capillare's distribution ranges from Litchfield National Park in the Northern Territory east to Cooktown Mareeba in northern Queensland, Australia. Its habitat is recorded as being sandy soils in eucalypt woodlands and swampy Melaleuca species communities. S. capillare is most closely related to S. nominatum. Its conservation status has been assessed as secure.
Stylidium pedunculatum is a dicotyledonous plant that belongs to the genus Stylidium. It is an annual plant that grows from 5 to 10 cm tall. The linear or deltate leaves, about 20-200 per plant, are mostly in terminal rosettes but with some scattered along the elongate stem. The leaves are generally 4.5-8.5 mm long and 0.5-0.8 mm wide. Petioles are absent. This species produces 2-14 scapes per plant. Inflorescences are 4–7 cm long and produces a single white or pink flower that blooms from March to September in the southern hemisphere. S. pedunculatum's distribution is scattered in the tropical areas of Queensland and the Northern Territory and isolated in the Aru Islands. Its habitat is recorded as being damp, sandy soils in open Melaleuca viridiflora communities. It's been found in association with Drosera, Schoenus, and Utricularia species. S. pedunculatum is most closely associated with S. ericksoniae. Its conservation status has been assessed as data deficient.
Stylidium floribundum is a dicotyledonous plant that belongs to the genus Stylidium. S. floribundum's distribution ranges from the Kimberley region of Western Australia across northern Australia to northwestern Queensland.
Stylidium multiscapum is a dicotyledonous plant that belongs to the genus Stylidium. It is an herbaceous annual plant that grows from 10 to 20 cm tall. Oblanceolate leaves, about 8-100 per plant, form a basal rosette with stems absent.
