1E0000 5B2000 6E6601 8A1B00 D19A01 D57231 F3B68A FBD045

Orobanche gracilis

Posted by
Johan Dierckx (Wijnegem, Belgium) on 15 September 2011 in Plant & Nature and Portfolio.

Orobanche gracilis (NL: "Bloedrode bremraap" / EN: Slender Broomrape / DE: Zierliche Sommerwurz, Schlanker Würger, Blutrote Sommerwurz / FR: Orobanche grêle) belongs to the family Orobanchaceae.
Broomrapes are are strange plants, both in terms of appearance as in ecology: they are holoparasitic. As these species are lacking chlorophyll they are totally dependent on other plants for nutrients. Broomrape seeds remain dormant in the soil, often for many years, until stimulated to germinate by certain compounds produced by living plant roots. The seedlings put out a root-like growth, which attaches to the roots of nearby hosts. Once attached to a host, the broomrape robs its host of water and nutrients. When they are not flowering, no part of these plants is visible above the surface of the soil. O. Gracilis prefers semi-arid grassland and dry meadows and is a parasite on Trifolium sp. and Lotus sp. The plant in the image gives a withered impression, but is actually only starting to bloom. The stem is brownish, yellowish or reddish and usually has less than 15 scale leaves. The snapdragon-like flowers, with clove-like scent, are in tight clusters. The crown is glossy inside, turbid blood-red and yellow on the outside. The stigma is yellow, often with a red border (the two yellow "beans" in the centre of the image). The plant is covered with glandular hairs.

Image: Passo Gardena (IT) - 10/07/2011

Canon EOS 400D 1/160 second F/4.5 ISO 200 150 mm

© Johan Dierckx

The photos on this site are copyrighted, which prohibits anyone to use them to sell, give away, use in email or newsgroups, use in a homepage or otherwise showing to the public without my explicit, prior, written permission. Please feel free to use the "contact"-button below to contact me with any questions.

All species are photographed in their natural habitat, without cutting or capturing them, and with maximal respect and the least possible disturbance to the environment.

(To see species in the same taxonomic rank (Kingdom, Phylum, Class, Order, Family, Genus), please use the tags provided with the image. The last tag is the Iso-code for the country where the image was taken. Image-date in DD/MM/YYYY format.)

Please feel free to visit my personal website http://www.diversitasnaturae.be/

Ralf Kesper from Attendorn, Germany

An excellent mocroshot. Well made.

15 Sep 2011 7:59am

Canon EOS 400D
1/160 second
ISO 200
150 mm