Ivy Broomrape
Orobanche hederae
Photo: Wikimedia Commons (CC) via https://en.wikipedia.org/wiki/Orobanche_hederae
Overview
Orobanche hederae, the ivy broomrape, is, like other members of the genus Orobanche, a parasitic plant without chlorophyll, and thus totally dependent on its host, which is ivy. It grows to 60 cm (2 ft), with stems in shades of brown and purple, sometimes yellow. The flowers are 10–22 mm (0.4–0.9 in) long, cream in colour with reddish-purple veins.
Ivy Broomrape is declining primarily due to habitat loss and degradation of coastal areas where its host plant, ivy, grows. Urban development, coastal erosion, and changes in land management practices have reduced suitable habitat availability. The species' highly specialized parasitic relationship with ivy makes it particularly vulnerable to any factors affecting its host plant populations.
Habitat
Ivy broomrape primarily propagates by seeds which are dispersed by wind, but is also able to regenerate from small fragments of roots that remain in the soil. Many broomrape seeds show considerable abilities to remain dormant but viable for many years.
When germination occurs, the embryo of the seed sends out a thin thread-like filament that spirals away from the embryo and into the surround...
Other threatened species in Orobanchaceae
Frequently asked questions
Why is Ivy Broomrape classified as Endangered?
Where does Ivy Broomrape live?
What are the main threats to Ivy Broomrape?
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