Higher classification Asclepiadoideae | Scientific name Cynanchum Rank Genus | |
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Lower classifications Cynanchum louiseae, Vincetoxicum paniculatum, Cynanchum laeve, Cynanchum utahense | ||
Rescued sullavantii milkweed colony update and cynanchum plus
Cynanchum is a genus of about 300 species including some swallowworts, belonging to the family Apocynaceae. The taxon name comes from Greek kynos (meaning "dog") and anchein ("to choke"), 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.
Contents
- Rescued sullavantii milkweed colony update and cynanchum plus
- Medicinal rice p5m formulations for cynanchum excess pankaj oudhia s medicinal plant database
- Morphology
- Distribution
- Importance
- Classification
- Species
- References
Medicinal rice p5m formulations for cynanchum excess pankaj oudhia s medicinal plant database
Morphology
These plants are perennial herbs or subshrubs, often growing from rhizomes. The leaves are usually oppositely arranged and sometimes are borne on petioles. The inflorescences and flowers come in a variety of shapes.
Like other species of the milkweed family, these plants bear follicles, which are podlike dry fruits.
Distribution
These species are found throughout the tropics and subtropics. Several species also grow in temperate regions.
Importance
The root of Cynanchum atratum is used in Chinese traditional medicine and called Bai wei. Several other species had traditional Chinese medicinal uses.
Cynanchum louiseae (black swallowwort) and Cynanchum rossicum (pale swallowwort) are troublesome noxious weeds in parts of North America.
Classification
Cynanchum as defined in the late 20th century (to include about 400 species) is polyphyletic and is being broken up. Species are being moved to genera including Orthosia, Pentarrhinum, and Vincetoxicum, with a group of mostly Old World species staying in Cynanchum.
Species
Species include:
