Ipomoea hederacea (weed)
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Ipomoea hederacea (L.) Jacq. (weed) - (ivyleaf morningglory)
This is a climbing weed, common in North America, especially in south-eastern parts, where it has been introduced from South America. It is also found in other continents and regions. The weed affects crops like maize, soybean, groundnuts and cotton. Yield losses of 50% or more have been recorded in cotton and soybean. One plant can produce up to 6,000 durable seeds which can survive for many years. The seeds spread mainly through water, animals or human activities. For control, herbicides are commonly used. In garden environments, hand pulling is recommended.
The plant may climb to a height of about 2 m and has a thin taproot. The leaves are 3-lobed, or unlobed and heart-shaped. They grow to a length and width of about 10 cm. The flowers are about 5 cm wide, funnel-shaped, bluish to purple with a white inner centre. They open only during the morning.
| Vernacular names | |
|---|---|
| • Deutsch: | efeuartige Trichterwinde |
| • English: | ivyleaf morningglory entireleaf morningglory |
| • Français: | ipomée à feuilles de lierre |
The fruits are round capsules, about 1 cm wide, containing 4-6 seeds. The seeds are 4-6 mm long, brown, with a triangular, semi-circular or pear-shaped outline.
Ipomoea hederacea var. integriuscula Gray - entireleaf morningglory.
Synonyms
Ipomoea barbigera
Pharbitis hederacea
- Other images of Ipomoea hederacea (weed) (IPM Images - click to enlarge)
plant with unlobed leaves
seeds
seeds
