BugwoodWiki Article

witchweed
Striga asiatica (L.) Kuntze

Overview

Appearance
Striga asiatica is a parasitic plant that can infest agricultural crops and has been found in North and South Carolina. Plants are normally 6-12 in. (15.2-30.5 cm) tall but have grown to 24 in. (61 cm).
Foliage
Leaves of Striga asiatica are linear and around 1 in. (2.5 cm) long.
Flowers
Striga asiatica flowers are small, less than 0.5 in. (1.3 cm) in diameter, occur in or on loose spikes, and can vary greatly in color from white to yellow, red, or purple.
Fruit
The flowers give way to swollen seed pods that contain thousands of microscopic seeds per pod.
Ecological Threat
Striga asiatica can parasitize important agricultural crops such as corn, sorghum, sugar cane and rice. The host plant's nutrients are depleted and energy is spent supporting the parasitic witchweed. Infestations reduce yields and contaminate crops. Witchweed is native to Asia and Africa and was first identified in the United States, in the Carolinas, in 1955. It is listed as a Federal Noxious Weed.

Resources

Selected Images


5373377
5373377

witchweed
Striga asiatica
Florida Division of Plant Industry Archive
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5373378

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Striga asiatica
Florida Division of Plant Industry Archive
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5384179

witchweed
Striga asiatica
Plant(s)
Florida Division of Plant Industry Archive
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5384180

witchweed
Striga asiatica
Plant(s)
Florida Division of Plant Industry Archive
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1148083

witchweed
Striga asiatica
Plant(s)
USDA APHIS PPQ Archive
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1148087

witchweed
Striga asiatica
Plant(s)
USDA APHIS PPQ Archive
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1148088

witchweed
Striga asiatica
Control
USDA APHIS PPQ Archive
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1149210

witchweed
Striga asiatica
Control
USDA APHIS PPQ Archive
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1299119

witchweed
Striga asiatica
Infestation
Randy Westbrooks
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5376856

witchweed
Striga asiatica
Seed(s)
Julia Scher
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5376862

witchweed
Striga asiatica
Seed(s)
Julia Scher
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5376868

witchweed
Striga asiatica
Seed(s)
Julia Scher

Maps


EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org

EDDMapS Distribution

State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org

State Regulated List

Taxonomic Rank

Kingdom: Plantae
Phylum: Magnoliophyta
Class: Magnoliopsida
Subclass: Asteridae
Order: Scrophulariales
Family: Scrophulariaceae
Genus: Striga

Other System Links

Plants: STAS2
Bayer: STRLU
GRIN: 102305
ITIS: 505388
NPDN Pest: PEUANBA

Synonyms and Other Names

Other Common Names:
Asiatic witchweed

Related Scientific Names:

Striga lutea (L.) Kuntze(Synonym)

Categories

Category: Forbs/Herbs
Category: Parasitic and Epiphytic Plants