Aristolochia macrophylla

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Aristolochia macrophylla Lam.

Aristolochiaceae

Life form: climber
Usage: ornamental plant

Exposure: half shade - Exposure: shade   9

Moisture: moist

Soil: clay - Soil: sandy clay - Soil: loamy clay - Soil: peat

Arrangement: alternate
Leaves: decidious

Shape: cordate

Division: simple

    

Shape: tubular
Fruit: loculicidal capsule

183D / 742530 

Inflorescence: solitary

Petals: single
Habit: pendant

Growth form: not specified

Taxonomy

Divisio:
Magnoliophyta
Subdivisio:
Magnoliophytina
Classis:
Piperopsida
Subclassis:
Piperidae
Superordo:
Lactoridanae
Ordo:
Aristochiales

Aristolochia macrophylla is a climber.

Naming

Aristolochia macrophylla was described by Jean-Baptiste Pierre Antoine de Monet de Lamarck in 1783. The name is considered as validly published.

Taxonomy

Aristolochia macrophylla is a species in the genus Aristolochia which contains approximately 489 to 545 species and belongs to the family of the Aristolochiaceae (Birthwort Family). The type species of the genus is Aristolochia rotunda.

Characteristics

Aristolochia macrophylla - habitus
Aristolochia macrophylla - branches

Growth

The climbers are comparatively fast-growing and reach heights of 8 to 10 metres. The plants reach a width of 2 to 6 metres.

Leaves

Aristolochia macrophylla is deciduous. The dark-green, simple leaves are alternate. They are cordate and petiolate with entire margins and palmate venation. The surface of the leaves is puberulent. They turn an attractive yellow in autumn.

Flowers and Fruits

Aristolochia macrophylla produces solitary pendant, dark reddish brown tubular flowers from June to August. The plants flower on last years shoots. They are hermaphroditic.

The climbers carry green loculicidal capsules.

Root System

The plants form shallow roots.

Distribution

Aristolochia macrophylla is native to the Southeast of the US.

Cultivation

The climbers prefer a half-shady to shady situation on moist soil. The substrate should be clay, sandy clay, loamy clay or peaty soil with a pH between 8 and 10. They tolerate temperatures down to -7°C (USDA zone 9).

Uses

The ornamental value of Aristolochia macrophylla lies especially in the ornamental leaves. Suited for pergolas, as well as suited as climbers in trees and as plant providing shelter for birds.

Maintenance and Propagation

The plants usually need very little maintenance.


Cultivars

Pests and Diseases

Honeydew, galls and distorted leaves are a sign for an infestation with aphids. Use an insecticide or control biologically , e.g. with parasitic wasps or predators such as Aphidoletes aphidimyza.

Sudden wilting and pale green discolouration indicate a fungal infection (phytophthora). Remove infected plants. Avoid by improving drainage and over-fertilization.

Literature

  • Walter Erhardt, Erich Götz, Nils Bödeker, Siegmund Seybold: Der große Zander. Eugen Ulmer KG, Stuttgart 2008, ISBN 978-3-8001-5406-7. (Ger.)
  • Christoper Brickell (Editor-in-chief): RHS A-Z Encyclopedia of Garden Plants. Third edition. Dorling Kindersley, London 2003, ISBN 0-7513-3738-2.

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