The mechanisms of reproductive isolation are a collection of evolutionary mechanisms, behaviors and physiological processes critical for speciation. They prevent members of different species from producing offspring, or ensure that any offspring are sterile. These barriers maintain the integrity of a species by reducing gene flow between related species.
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.
Caulanthus is a genus of plants in the family Brassicaceae. Plants of this genus may be known as jewelflowers. They are also often referred to as wild cabbage, although this common name usually refers to wild variants of Brassica oleraceae, the cabbage plant. Jewelflowers are native to the southwestern United States and northern Mexico, where they are often found in warm, arid regions. Many species have an enlarged, erect stem rising from a basal rosette of leaves. Flowers arise directly from the surface of the stem; many species have colorful, bell-shaped flowers. The best-known of the fourteen species is probably the desert candle.
Caulanthus heterophyllus is a species of flowering plant in the family Brassicaceae known by the common names San Diego wild cabbage and San Diego jewelflower.
Utricularia simulans, the fringed bladderwort, is a small to medium-sized, probably perennial, carnivorous plant that belongs to the genus Utricularia. U. simulans is native to tropical Africa and the Americas. It grows as a terrestrial plant in damp, sandy soils in open savanna at altitudes from near sea level to 1,575 m (5,167 ft). U. simulans was originally described and published by Robert Knud Friedrich Pilger in 1914.
Guillenia is a small genus of mustard plants containing three species. These are sometimes treated as members of the jewelflower genus Caulanthus. They are native to western North America.
Calochortus simulans is a California species of flowering plant in the lily family known by the common name San Luis Obispo mariposa lily, not to be confused with the San Luis mariposa lily C. obispoensis.
Caulanthus amplexicaulis is a species of flowering plant in the family Brassicaceae known by the common name claspingleaf wild cabbage.
Caulanthus californicus is a species of flowering plant in the family Brassicaceae known by the common names California jewelflower and St. Francis cabbage.
Caulanthus cooperi is a species of flowering plant in the family Brassicaceae known by the common name Cooper's wild cabbage. It is native to the southwestern United States and Baja California, where it is a common plant in a number of open, sandy habitats. This annual herb produces a slender, somewhat twisted stem with widely lance-shaped to oblong leaves clasping it. The flower has a rounded or urn-shaped coat of pinkish or pale greenish sepals enclosing light yellow or pale purple petals. The fruit is a straight or curving silique several centimeters long.
Caulanthus coulteri is a species of flowering plant in the family Brassicaceae known by the common name Coulter's wild cabbage.
Caulanthus crassicaulis is a species of flowering plant in the family Brassicaceae known by the common name thickstem wild cabbage. It is native to the western United States where it is a member of the flora in sagebrush, woodland, and desert scrub habitats. This is a perennial herb producing a stout, inflated stem from a woody caudex base. The leaves form a basal rosette and occur at intervals along the stem. They are broadly lance-shaped on the lower stem and much smaller and linear in shape farther up. They may have smooth, toothed, or deeply cut edges. The rounded flower has a coat of thick, pouched sepals which part at the flower tip to reveal narrow dark purple or brown petals. There are two varieties of this species: var. crassicaulis generally has hairy flowers, while var. glaber has hairless. The fruit is a long, thin silique which may approach 13 centimeters in length.
Caulanthus glaucus is a species of flowering plant in the family Brassicaceae known by the common names glaucous wild cabbage, bigleaf wildcabbage, and limestone jewelflower.
Caulanthus hallii is a species of flowering plant in the family Brassicaceae known by the common name Hall's wild cabbage.
Caulanthus major is a species of flowering plant in the family Brassicaceae known by the common name slender wild cabbage. It is native to the Great Basin and surrounding regions of the United States, where it grows on dry mountain slopes and similar habitat.
Caulanthus pilosus is a species of flowering plant in the family Brassicaceae known by the common names hairy wild cabbage and chocolate drops. It is native to open, dry habitat in the Great Basin of Nevada, the Eastern slope of the Sierra Nevada to 9,000 ft (2,700 m) and surrounding regions of the United States northward to the SE corner of Oregon. It is an annual or occasionally perennial herb coated in thin hairs, especially toward the base.
Erechthias simulans is a species of fungus moth. It is here considered to belong to the somewhat controversial type genus of its subfamily Erechthiinae, though even fairly recently some authors have proposed to retain other genera such as Decadarchis separate from Erechthias. Decadarchis, with E. simulans as type species, would in fact contain this moth and its closest relatives, regardless whether it is recognized as full genus or as subgenus. These relatives are generally held to be a group of mainly Polynesian species. E. simulans has also been mistaken for a species of the closely related genus Comodica; while the delimitation of this versus Erechthias/Decadarchis is not universally agreed upon, E. simulans is not included in Comodica anymore by modern authors.
Caulanthus barnebyi, the Black Rock wild cabbage, is a plant species endemic to a small region in the US State of Nevada. It is known only from the Black Rock Mountains in Humboldt and Pershing Counties in the northwestern part of the state. It grows on dry, rocky slopes and outcrops at elevations of 4,300–4,900 feet (1,300–1,500 m).
Myriophyllum variifolium is a species of water milfoil native to eastern Australia where it grows in aquatic habitat such as ponds and streams.
Eremophila simulans is a flowering plant in the figwort family, Scrophulariaceae and is endemic to Western Australia. It is an erect shrub with broad, serrated leaves and violet to purple flowers.
