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Orobanche minor; Lesser Broomrape   

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Orobanche minor
Orobanche minor
Lesser Broomrape
Photographer: Dr. Amadej Trnkoczy

ID: 0000 0000 0123 2450 (2023-01-24)

Copyright © 2023 Dr. Amadej Trnkoczy

  • date of photo  May 4, 2019
  • latitude 45.07642   longitude 14.43666     View on Google Maps.
  • location   Adriatic Sea, island Krk, next to the trail leading west from village Brzac (old part) to the sea shore, Kvarner archipelago (Rijeka region, Croatia)
  • family Orobanchaceae
  • notes   Slo.: mali pojalnik - syn.: Orobanche langei Huter, Porta & Rigo, Orobanche major f. hypochoeridis Beck, Orobanche maritima Pugsley, Orobanche salisii Req. ex Coss. and about 25 other names. - Habitat: garrigue, moderately inclined hill slope, west aspect; dry, warm, mostly sunny place; calcareous, skeletal ground; exposed to direct rain; elevation 65 m (210 feet); average precipitations ~ 1.000 mm/year, average temperature 12-14 deg C, Sub-Mediterranean phytogeographical region. - Substratum: soil. - Comment (pertains to pictures in the Flickr album Orobanche minor): Orobanche minor is a widespread and quite common holoparasitic species (those that lost all the photosynthetic properties). It is present almost in all European countries (exceptions are Scandinavia and most-northeast countries), in Mediterranean countries of North Africa, in parts of Asia Minor and from Macaronesia to Arabian Peninsula and S. Tropical Africa (Ref.: 4.). Today it is introduced also to other continents. - Generally, to recognize plants belonging to genus Orobanche is easy. These attractive plants are strange looking, with very specific habit and flowers. However, on species level the situation is much more challenging. The reasons are several. Plants are notoriously variable in shape, color and size, they change radically their shape during anthese, they are difficult to study since they lose their colors in herbariums. Hundreds of varieties and forms have been described. 'Total' number of taxa in the genus varies enormously among different authors depending on their taxonomical approach. For some species there is still no agreement on the taxonomy. Consider this: length of corolla of Orobanche minor is described in Ref.: 2. as 10-12(15) mm long, in Ref. 1. as 6-10 mm, in Ref.: 3. as 10-19 mm and as 6-10 mm for one of its varieties (Orobanche minor var. maritima). - This find corresponds well to the characteristics traits of Orobanche minor as described in Ref.: 3.. The solitary plant is relatively small, slender, strongly glandular-pubescent and of 'proper' color (that means most common color). The calyx segments are unequally bidentate and almost filiform at the tip, the bracts are almost as long as corolla, corollas have distinct violet veins on pale-whitish-yellowish background, the upper lip is almost entire, the lower lip is tripartite consisting of unevenly crenate lobes of approximately equal size and the stigma is brown-violet. The plant parasites on many species of several genera, most often on clovers (Trifolium) but also on other legumes, peas and beans (Fabaceae) and composites (Asteraceae). In this find it parasitized Anthyllis vulneraria ssp. rubiflora. Its withered flowers can be seen on Fig. 5. - Ref.: (1) M. Blamey, C. Grey-Wilson, Wild Flowers of the Mediterranean, A & C Black, London (2005), p 417. (2) A. Martinči et all., Mala Flora Slovenije (Flora of Slovenia - Key) (in Slovenian), Tehnična Založba Slovenije (2007), p 578. (3) C.A.J. Kreutz, Orobanche, The European broomrape species, Vol.1., Central and Northern Europe, Stichting Natuurpublicaties Limburg, Maastrich (1995), p 120. (4) (accessed Jan. 22. 2023)
  • camera   Nikon D700 / Nikkor Micro 105mm/f2.8
  • contributor's ID #  Bot_1191/2019_DSC5058
  • photo category: Plant - annual/perennial

  • common names   Lesser Broomrape, Common Broomrape (photographer)
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    Using this photo   The thumbnail photo (128x192 pixels) on this page may be freely used for personal or academic purposes without prior permission under the Fair Use provisions of US copyright law as long as the photo is clearly credited with © 2023 Dr. Amadej Trnkoczy. For other uses, or if you have questions, contact Dr. Amadej Trnkoczy amadej.trnkoczy[AT] (Replace the [AT] with the @ symbol before sending an email.)


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