Asclepias curassavica

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Asclepias curassavica
Asclepias curassavica-Thekkady-2016-12-03-001.jpg
Status TNC G5.svg
Secure  (NatureServe) [1]
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Gentianales
Family: Apocynaceae
Genus: Asclepias
Species:
A. curassavica
Binomial name
Asclepias curassavica
L.
Synonyms [2]

Asclepias nivea var. curassavica(L.) Kuntze

Asclepias curassavica, commonly known as tropical milkweed, [3] is a flowering plant species of the milkweed genus, Asclepias . [4] It is native to the American tropics [5] and has a pantropical distribution as an introduced species. Other common names include bloodflower or blood flower, [3] cotton bush, [6] hierba de la cucaracha, [3] Mexican butterfly weed, redhead, [6] scarlet milkweed, [3] and wild ipecacuanha. [3]

Contents

It is grown as an ornamental garden plant and as a food source for some butterflies, however it may be harmful to the migration patterns of monarch butterflies when used in gardens outside of its native tropical range. [7] Though public concern for the rapidly declining monarch population increased the demand and commercial availability of milkweed among nurseries in the US, the results have been mixed. While tropical milkweed may effectively sustain monarch larvae, the perennial growth of the plant takes ill effect on the monarchs' migratory patterns and may have other physiological effects. [8] Use of the tropical milkweed in gardens has disrupted monarch migrations notably in California, Texas, Florida, and South Carolina. [9] Unlike the milkweed species native to these locations, the tropical milkweed does not go dormant in the winter causing non-migratory groups of butterflies to form. Planting Asclepias curassavica in nonnative regions therefore remains controversial and criticized. Alternatively, native milkweed species (such as showy milkweed, narrowleaf milkweed, and desert milkweed for California [10] ) are suggested for butterfly gardens. [11]

It also attracts members of the Danainae subfamily, such as the queen.

Collage of insects using tropical milkweed (Asclepias curassavica) for nectar or as a hunting ground Asclepias curassavica Wildlife collage.jpg
Collage of insects using tropical milkweed (Asclepias curassavica) for nectar or as a hunting ground

Description

Typical plants are evergreen perennial subshrubs that grow up to 1 m (3.3 ft) tall and have pale gray stems. The leaves are arranged oppositely on the stems and are lanceolate or oblong-lanceolate shaped ending in acuminate or acute tips. Like other members of the genus, the sap is milky. The flowers are in cymes with 10-20 flowers each. They have purple or red corollas and corona lobes that are yellow or orange. Flowering occurs nearly year-round. [5] The 5–10 cm (2.0–3.9 in) long, fusiform shaped fruits are called follicles. The follicles contain tan to brown seeds that are ovate in shape and 6–7 mm (0.24–0.28 in) long. The flat seeds have silky hairs that allow the seeds to float on air currents when the pod-like follicles dehisce (split open). [12]

Cultivation

There are a number of different cultivars with improved flower colors and shorter habit; some have bright red, yellow or orange colored flowers. Asclepias curassavica is sometimes used in butterfly gardens (see above for concerns for monarchs) or as a cut flower. However, when the stems or leaves are broken, a poisonous milky sap exudes which can cause eye injury. [13]

Distribution

Asclepias curassavica is described by NatureServe as a "widespread species, ranging from southern North America through Central America and into South America." [1]

It is an introduced species in the US states of California, Florida, Hawaii, Louisiana, Tennessee, and Texas, as well as the US unincorporated territories of Puerto Rico and the United States Virgin Islands. [14]

It has been introduced and naturalized in the Chinese provinces of Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hainan, Hubei, Hunan, Jiangsu, Jiangxi, Qinghai, Sichuan, Xizang, Yunnan, and Zhejiang, as well as in Taiwan. [5]

Asclepias curassavica was introduced to Australia prior to 1869 and is widespread in parts of Queensland. [15] It is considered an exotic plant, and a weed, at the Meteor Downs South Project near Rolleston, Queensland, Australia. [16]

Chemistry

Asclepias curassavica contains several cardiac glycosides, [17] including asclepin, [18] calotropin, uzarin and their free genins, calactin, coroglucigenin and uzarigenin. [19] It also contains oleanolic acid, β-sitosterol, and glycosides of asclepin. The most abundant cardiac glycoside present in Asclepias curassavica leaves is voruscharin, which comprises around 40% of the total cardiac glycoside content in leaves. [20]

Related Research Articles

<i>Asclepias tuberosa</i> Species of flowering plant

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.

<span class="mw-page-title-main">Monarch butterfly</span> Milkweed butterfly in the family Nymphalidae

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 amongst 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.

<span class="mw-page-title-main">Apocynaceae</span> Dogbane and oleander family of flowering plants

Apocynaceae is a family of flowering plants that includes trees, shrubs, herbs, stem succulents, and vines, commonly known as the dogbane family, because some taxa were used as dog poison Members of the family are native to the European, Asian, African, Australian, and American tropics or subtropics, with some temperate members. The former family Asclepiadaceae is considered a subfamily of Apocynaceae and contains 348 genera. A list of Apocynaceae genera may be found here.

<i>Asclepias</i> Genus of flowering plants

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, although, as with many such plants, there are species that feed upon them and from them. Most notable are monarch butterflies, who use and require certain milkweeds as host plants for their larvae.

<i>Asclepias syriaca</i> Species of flowering plant

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.

<i>Asclepias incarnata</i> Species of flowering plant

Asclepias incarnata, the swamp milkweed, rose milkweed, rose milkflower, swamp silkweed, or white Indian hemp, is a herbaceous perennial plant species native to North America. It grows in damp through wet soils and also is cultivated as a garden plant for its flowers, which attract butterflies and other pollinators with nectar. Like most other milkweeds, it has latex containing toxic chemicals, a characteristic that repels insects and other herbivorous animals.

<span class="mw-page-title-main">Queen (butterfly)</span> Species of butterfly

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.

<span class="mw-page-title-main">Butterfly gardening</span> Gardening to benefit butterflies

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.

<i>Asclepias asperula</i> Species of flowering plant

Asclepias asperula, commonly called antelope horns milkweed or spider milkweed, is a species of milkweed native to the Southwestern United States and northern Mexico.

<span class="mw-page-title-main">Cardenolide</span> Chemical compound

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.

<i>Asclepias fascicularis</i> Species of flowering plant

Asclepias fascicularis is a species of milkweed known by the common names narrowleaf milkweed and Mexican whorled milkweed. It is a perennial herb that grows in a variety of habitats.

<i>Asclepias californica</i> Species of flowering plant

Asclepias californica is a species of milkweed known by the common name California milkweed. It grows throughout lower northern, central and southern California.

<i>Asclepias speciosa</i> Species of flowering plant

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.

<i>Asclepias cordifolia</i> Species of flowering plant

Asclepias cordifolia is a species of milkweed commonly called heart-leaf milkweed or purple milkweed. It is native to the western United States, growing between 50 and 2,000 m elevation in the northern Sierra Nevada and Cascade ranges. Heart-leaf milkweed was valued by the Native American Miwok tribe for its stems, which they dried and processed into string and rope.

<i>Asclepias linaria</i> Species of flowering plant

Asclepias linaria is a species of milkweed known by the common name pineneedle milkweed.

<i>Asclepias quadrifolia</i> Species of flowering plant

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.

<i>Asclepias lanceolata</i> Species of plant

Asclepias lanceolata, the fewflower milkweed, is a species of milkweed that is native to the coastal plain of the United States from New Jersey to Florida and Southeast Texas. A. lanceolata is an upright, perennial plant that can grow between 3 and 5 feet tall, with red-orange flowers blooming in the summer months. It can also be referred to as Cedar Hill milkweed, as it was first described by Dr. Eli Ives in the neighborhood of Cedar Hill in New Haven, Connecticut.

<i>Asclepias sullivantii</i> Species of plant

Asclepias sullivantii is a species of flowering plant in the milkweed genus, Asclepias. Common names include prairie milkweed, Sullivant's milkweed, and smooth milkweed. It is native to North America, where it occurs in the central United States and Ontario in Canada.

<i>Asclepias curtissii</i> Species of plant

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.

<i>Asclepias cinerea</i> Species of milkweed

Asclepias cinerea, also known as Carolina milkweed or ashy milkweed, is a herbaceous perennial plant species in the genus Asclepias. It is native to the United States where its range is concentrated in the Southeast.

References

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  8. Majewska, Ania A.; Altizer, Sonia (16 August 2019). "Exposure to Non-Native Tropical Milkweed Promotes Reproductive Development in Migratory Monarch Butterflies". Insects. 10 (8): 253. doi: 10.3390/insects10080253 . PMC   6724006 . PMID   31426310.
  9. "Can Milkweed be Bad for Monarchs". 12 January 2013.
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  12. Christman, Steve (2004-01-21). "Asclepias curassavica: Floridata". Floridata. Retrieved 2014-03-22.
  13. Hsueh, Kuo-Fang; Lin, Pei-Yu; Lee, Shui-Mei; Hsieh, Chang-Fu (February 2004). "Ocular injuries from plant sap of genera Euphorbia and Dieffenbachia" (PDF). Journal of the Chinese Medical Association. 67 (2): 93–98. PMID   15146906. Archived from the original (PDF) on 2014-06-11. Retrieved 2011-05-01.
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  15. "Asclepias curassavica (bloodflower)". www.cabi.org. Retrieved 2022-05-06.
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