Cynanchum laeve | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Gentianales |
Family: | Apocynaceae |
Genus: | Cynanchum |
Species: | C. laeve |
Binomial name | |
Cynanchum laeve | |
Synonyms | |
Ampelamus albidus Contents |
Cynanchum laeve is a vining perennial herb native to eastern and central U.S. states and Ontario. Common names include sand vine, honeyvine, honeyvine milkweed, bluevine milkweed, climbing milkweed, and smooth swallow-wort. [2] The root system of C. laeve can cause it to be very difficult to eradicate, especially in agricultural fields. [3] It is a larval food of monarch butterflies [4] and milkweed tussock moth larvae. [5] C. laeve can cause eye irritation if touched and can be toxic to humans and livestock if consumed in large quantities. [6]
Cynanchum laeve was originally described in 1803 as Gonolobus laevis Michx. Mixed elements on the type sheet that was published has led to confusion around the correct nomenclature. [7] Currently under the International Plant Names Index it is listed as Cynanchum laeve Pers. [8] Synonymous plant names include Ampelamus albidus (Nutt.) Britton, Ampelamus laevis (Michx.) Krings, and Gonolobus laevis Michx. [9] Cynanchum laeve is in the Apocynaceae, or milkweed family. Cynanchum, or swallow-wort genus, and the laeve, which is a specific epithet meaning smooth . [9]
Cynanchum laeve is a twining vine with heart-shaped leaves and commonly found in roadsides, fence rows, fields, and disturbed areas. C. laeve is easily recognized as a member of the Apocynaceae by its opposite leaves, [10] milky sap, and distinctive flowers and follicles ("milkweed pods"). The seeds are wind dispersed and can travel long distances. Each plant can produce up to 50 follicles. The root system is fleshy and brittle with a large taproot with other lateral roots, these roots can grow up through 6 feet deep. Developing stems are a light pink and produce a milky sap when broken. [3] Vase-shaped flowers have 5 white petals. These occur in clusters on short stalks. [3] C. laeve flowers from June through September. [3]
Cynanchum laeve occurs in the eastern and central United States and Ontario, Canada. [11] C. laeve can be found in wetland areas in the arid West, Atlantic and Gulf Coastal Plain, Eastern mountain and Piedmont, the Great Plains, Midwest, and the North Central and North Eastern United States. [9] [12] [13] Cynanchum laeve typically lives in disturbed habitats such as thickets, low moist fields, riverbanks, fence rows, and cultivated fields. [3]
In Pennsylvania, Cynanchum laeve is listed as endangered. [9]
Cynanchum laeve is a food plant of caterpillars of monarch butterflies. [4] [14] Larvae of Euchaetes egle , the milkweed tussock moth, both in the Eastern and Western United States consume C. laeve. The larvae of these moths eat Cynanchum laeve and other plants when developing. [5]
Cynanchum laeve is not a human edible plant. Its sap can cause eye irritation damaging mucous membranes. If C. laeve is consumed in large quantities it can be toxic. Thorough hand washing is recommended after handling the plant. [6]
Hay fed to livestock can contain C. laeve which can be toxic when consumed in large quantities. Most animals will not eat C. laeve due to its bitter taste. [6] It is recommended by the US Fish and Wildlife Service to take precautionary steps. These steps include not grazing hungry animals in pastures containing C. laeve, eradicating it from driveways and trails, and closely observing livestock that have just been introduced to areas containing C. laeve. [15] C. laeve can be very difficult to eradicate from fields because of its deep, extensive root system. This vine climbs on other plants, and this can cause problems in crop harvesting. [3]
Asclepias tuberosa, commonly known as butterfly weed, is a species of milkweed native to eastern and southwestern North America. It is commonly known as butterfly weed because of the butterflies that are attracted to the plant by its color and its copious production of nectar.
The monarch butterfly or simply monarch is a milkweed butterfly in the family Nymphalidae. Other common names, depending on region, include milkweed, common tiger, wanderer, and black-veined brown. It is among the most familiar of North American butterflies and an iconic pollinator, although it is not an especially effective pollinator of milkweeds. Its wings feature an easily recognizable black, orange, and white pattern, with a wingspan of 8.9–10.2 cm (3.5–4.0 in). A Müllerian mimic, the viceroy butterfly, is similar in color and pattern, but is markedly smaller and has an extra black stripe across each hindwing.
Asclepias is a genus of herbaceous, perennial, flowering plants known as milkweeds, named for their latex, a milky substance containing cardiac glycosides termed cardenolides, exuded where cells are damaged. Most species are toxic to humans and many other species, primarily due to the presence of cardenolides. However, as with many such plants, some species feed upon milkweed leaves or the nectar from their flowers. A noteworthy feeder on milkweeds is the monarch butterfly, which uses and requires certain milkweeds as host plants for their larvae.
Calotropis procera is a species of flowering plant in the family Apocynaceae that is native to Northern and Tropical Africa, Western Asia, South Asia and Indochina. It typically reaches a height between 6 feet (1.8 m) to 8 feet (2.4 m), and rarely to as high as 15 feet (4.6 m), and grows in sunny to partly-shaded habitats such as disturbed and overgrazed lands, rangeland, roadsides, river flats and coastal dunes. Its green fruits contain a toxic milky sap that is extremely bitter and turns into a latex-like substance, which is resistant to soap.
Cynanchum is a genus of about 300 species including some swallowworts, belonging to the family Apocynaceae. The taxon name comes from Greek kynos and anchein, hence the common name for several species is dog-strangling vine. Most species are non-succulent climbers or twiners. There is some evidence of toxicity.
Asclepias syriaca, commonly called common milkweed, butterfly flower, silkweed, silky swallow-wort, and Virginia silkweed, is a species of flowering plant. It is native to southern Canada and much of the United States east of the Rocky Mountains, excluding the drier parts of the prairies. It is in the genus Asclepias, the milkweeds. It grows in sandy soils as well as other kinds of soils in sunny areas.
The queen butterfly is a North and South American butterfly in the family Nymphalidae with a wingspan of 80–85 mm. It is orange or brown with black wing borders and small white forewing spots on its dorsal wing surface, and reddish ventral wing surface fairly similar to the dorsal surface. The ventral hindwings have black veins and small white spots in a black border. The male has a black androconial scent patch on its dorsal hindwings. It can be found in meadows, fields, marshes, deserts, and at the edges of forests.
Butterfly gardening is a way to create, improve, and maintain habitat for lepidopterans including butterflies, skippers, and moths. Butterflies have four distinct life stages—egg, larva, chrysalis, and adult. In order to support and sustain butterfly populations, an ideal butterfly garden contains habitat for each life stage.
Asclepias asperula, commonly called antelope horns milkweed or spider milkweed, is a species of milkweed native to the Southwestern United States and northern Mexico.
Euchaetes egle, the milkweed tiger moth or milkweed tussock moth, is a moth in the family Erebidae and the tribe Arctiini, the tiger moths. The species was first described by Dru Drury in 1773. It is a common mid- through late summer feeder on milkweeds and dogbane. Like most species in this family, it has chemical defenses it acquires from its host plants, in this case, cardiac glycosides. These are retained in adults and deter bats, and presumably other predators, from feeding on them. Only very high cardiac glycoside concentrations deterred bats as predators. Adults indicate their unpalatability to bats with ultrasonic clicks from their tymbal organs.
Asclepias curassavica, commonly known as tropical milkweed, is a flowering plant species of the milkweed genus, Asclepias. It is native to the American tropics and has a pantropical distribution as an introduced species. Other common names include bloodflower or blood flower, cotton bush, hierba de la cucaracha, Mexican butterfly weed, redhead, scarlet milkweed, and wild ipecacuanha.
Vincetoxicum rossicum is a flowering plant in the family Apocynaceae. It is a perennial herb native to southern Europe and is a highly invasive plant growing in all of the Eastern United States, in the mid west, and southern Ontario and Quebec in Canada. It has several common names including swallowwort, pale swallowwort, and dog-strangling vine; though it does not actually strangle dogs, it can “strangle” native plants and small trees if it is in dense patches. There has historically been much confusion about the genus it belongs to, with authors placing it within Vincetoxicum and others within Cynanchum, but recent molecular and chemical analyses have shown it to belong in the genus Vincetoxicum.
A cardenolide is a type of steroid. Many plants contain derivatives, collectively known as cardenolides, including many in the form of cardenolide glycosides (cardenolides that contain structural groups derived from sugars). Cardenolide glycosides are often toxic; specifically, they are heart-arresting. Cardenolides are toxic to animals through inhibition of the enzyme Na+/K+-ATPase, which is responsible for maintaining the sodium and potassium ion gradients across the cell membranes.
Asclepias speciosa is a milky-sapped perennial plant in the dogbane family (Apocynaceae), known commonly as the showy milkweed and is found in the western half of North America.
Cynanchum viminale is a leafless succulent plant in the family Apocynaceae. The species is native to West Africa, the Indian Ocean and Western Pacific region. The species' natural range extends from South Africa throughout much of Africa and the Middle East to India, Indochina, Southern China, Indomalaya and into Meganesia. The species is also found on several Indian Oceans islands including Mauritius, Réunion and the Seychelles.
Asclepias quadrifolia, commonly called four-leaved milkweed or fourleaf milkweed, is a species of milkweed in the Apocynaceae (dogbane) family. It is sometimes referred to as whorled milkweed, but it should not be confused with Asclepias verticillata. A. quadrifolia occurs in the eastern United States and Canada.
Asclepias curtissii, or Curtiss's milkweed, is a rare species of flowering milkweed that is endemic to Florida's sandy areas. Curtiss's milkweed belongs to the subfamily Asclepiadoideae and the genus Asclepias. This dicotyledonous, perennial plant was placed on the endangered species list by the state of Florida to protect this rare milkweed. Although Curtiss milkweed is found all over Florida, the populations are very isolated and concentrated.
The milkweed leaf beetle is a species of leaf beetle from the family Chrysomelidae. It is round bodied, 8–11 mm in length with a black head and pronotum and bright orange to yellow elytra with variable mottled black patches. It is colored and shaped like a super-sized ladybird beetle even though the ladybird is in a different family, Coccinellidae. The larva is shaped much like the adult except with a small tail extension. Its color varies from bright orange to white with a gray to black pronotum and prominent black spots around its spiracles.
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