Aristolochia

Its members are commonly known as birthwort, pipevine or Dutchman's pipe and are widespread and occur in the most diverse climates.

They are inflated and globose at the base, continuing as a long perianth tube, ending in a tongue-shaped, brightly colored lobe.

Aristolochia was first described by the 4th c. BC Greek philosopher and botanist Theophrastus in his ‘’Inquiry of Plants’’ [IX.8.3], and the scientific name Aristolochia was developed from Ancient Greek aristos (άριστος) "best" + locheia (λοχεία), childbirth or childbed, relating to its known ancient use in childbirth.

Lepidoptera feeding on pipevines include: Choreutidae Papilionidae In Australia the invasive Aristolochia littoralis is fatal to the caterpillars of Ornithoptera euphorion and O. richmondia and threatens to displace their proper host, A. tagala.

[11] For 400 years, the Bencao Gangmu remained the principal source of information in traditional Chinese medicine and the work was translated into numerous languages, reflecting its influence in countries other than China.

[13][14][15] Despite the toxic properties of aristolochic acid, naturopaths claim that a decoction of birthwort stimulates the production and increases the activity of white blood cells,[16] or that pipevines contain a disinfectant which assists in wound healing.

A. serpentaria (Virginia snakeroot) is thus named because the root was used to treat snakebite, as "so offensive to these reptiles, that they not only avoid the places where it grows, but even flee from the traveler who carries a piece of it in his hand".

In 1993, a series of end-stage renal disease cases was reported[14][23][24] from Belgium associated with a weight loss treatment, where Stephania tetrandra in a herbal preparation was suspected of being replaced with Aristolochia fangchi.

[30] Furthermore, it appears as if contamination of grain with European birthwort (A. clematitis) is a cause of Balkan nephropathy, a severe renal disease occurring in parts of southeast Europe.

[31] In 2001 the UK government banned the sale, supply and importation of any medicinal product consisting of or containing a plant of the genus Aristolochia.

[32] Several other plant species that do not cause themselves kidney poisoning, but which were commonly substituted with Aristolochia in the remedies, were prohibited in the same order.

Whole-genome and exome analysis of individuals with a known exposure to aristolochic acid revealed a higher rate of somatic mutation in DNA.

Due to their spectacular flowers, several species are used as ornamental plants, notably the hardy A. durior of eastern North America, which was one of John Bartram's many introductions to British gardens; in 1761 Bartram sent seeds he had collected in the Ohio River Valley to Peter Collinson in London, and Collinson gave them to the nurseryman James Gordon at Mile End to raise.

The vine was soon adopted for creating for arbors "a canopy impenetrable to the rays of the sun, or moderate rain," as Dr John Sims noted in The Botanical Magazine, 1801.

Calico flower ( A. littoralis ): habit
Aristolochic acid , the main toxin of pipevines
Aristolochia acuminata habitus drawing
Rajah Brooke's birdwing : its caterpillars feed on Aristolochia foveolata