Ipomoea alba
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Ipomoea alba |
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Ipomoea alba is a plant type from the genus of Morningglory ( Ipomoea ). It is spread pantropically .
description
Ipomea alba is a herbaceous climber that contains milky sap and is hairless or often with soft bristles on the stem . The leaf stalks are up to 20 cm long, the thin leaf blades are ovate or rounded-ovate to ovate-elongated or round. The mostly hairless leaf blade becomes 5 to 18 cm long and 8 to 16 cm wide. It suddenly ends in a short, pointed point, the base is deeply heart-shaped. The margin is entire or three to five lobes.
The flowers are in one to many-flowered inflorescences , which are usually shorter than the leaves. The flower stalks are 7 to 15 mm long, on the fruit they become thicker and angular. The sepals are green and fleshy, about 1 cm long. The outer two or three sepals are lanceolate or egg-shaped, 10 to 20 mm long and form an appendage at the tip. The two inner sepals are rounded and spiky. The crown is colored white with green stripes and is shaped like a saucer. The corolla tube is 8 to 15 cm long, the coronet 8 to 15 cm wide. The stamens and pistil are slightly above the crown.
The fruits are conically shaped, beaked capsules with a length of 2 to 3 cm and a diameter of 1 to 2 cm. They contain black seeds that are hairless or almost hairless and 1 cm long.
The number of chromosomes is 2n = 30.
Occurrence
The species has a pantropical distribution. Originally it occurs in tropical and subtropical America. It grows on roadsides, in thickets and river banks at low and medium altitudes. It is also planted as a strongly fragrant decorative plant in Central Europe; the plant offered as moon winds can only thrive as an annual outdoors because of its sensitivity to frost.
literature
- Henri Alain Liogier: Descriptive Flora of Puerto Rico and Adjancent Islands, Spermatophyta , Volume IV: Melastomataceae to Lentibulariaceae . Universidad de Puerto Rico, 1995, ISBN 0-8477-2337-2 .
Web links
Individual evidence
- ^ Ipomoea alba at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ↑ Rafaël Govaerts (Ed.): Ipomoea - World Checklist of Selected Plant Families of the Royal Botanic Gardens, Kew. Last accessed on November 24, 2017.
- ↑ They only bloom in the moonlight: moon winds, evening primrose and gemshorn