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Published In: Species Plantarum 2: 887. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
General/Distribution: Species 2, distributed in Europe, Asia, and N. Africa. Represented in our area by the following species.
Comment/Acknowledgements: *Co-author: Ronaq Khan, Natural History Museum, London.

 

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Annual or rarely perennial erect herbs, with fibrous roots. Leaves alternate, oblong or obovate, uppermost sometimes simple and entire, lower mostly 2-3-pinnatisect or 1-2-pinnatifid, with apex 2-3-partite, the margin lobed or dentate towards the semi-amplexicaule base. Capitula radiate, heterogamous, solitary, terminal or 2-5 per branch in lax corymbs, with peduncles often thickened toward apices. Involucre 2-3(-4)-seriate, phyllaries many-nerved, imbricate. Receptacle convex, without scales or paleae. Ray-florets pistillate, with yellow or sometimes white, apically 2-3-fid ligules, fertile. Disc-florets hermaphrodite, tubular, the corolla tube laterally expanded, 5-lobed, lobes with central resin sacs. Cypselas dimorphic and sometimes compressed, thick-walled, those of the ray-florets triquetrous or winged, disc cypselas mostly laterally flattened, narrowly winged adaxially, or cylindrical, 10-ribbed or angular, all epappose.
 
 
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