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Published In: Species Plantarum 2: 827. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 5/16/2022)
Acceptance : Accepted
Project Data     (Last Modified On 10/25/2020)
Contributor Text: Abdul Ghafoor
Contributor Institution: Centre for Plant Conservation, University of Karachi – PAKISTAN
Synonym Text:

Acanos Adans., Fam. Pl. 2:116. 1763. 


 

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Upright, stout, biennial, densely spiny herbs, usually with spinose-winged internodes and dentate-pinnatisect or almost pinnatisect spinose leaves. Capitula large, 4 – 7 cm in diameter, homogamous, globose to ovoid, solitary or grouped in a corymbose synflorescence. Phyllaries multiseriate, densely imbricate, deeply serrulate, spine-tipped, glabrous to puberulous, occasionally glandular. Receptacle foveolate or deeply pitted, alveoli sinuate-denticulate, and ciliate on margins, naked, neither paleaceous nor long hairy. Florets bisexual, reddish, purple, pink or white. Corolla tubular, with 5-lobed, actinomorphic or saccate limb. Anthers with a subulate, terminal appendage, on free, papillose filaments. Cypselas obovoid-oblong, ± 4-angled, glabrous, 4 -5-ribbed, apically truncate or sometimes rimmed, often transversely rugose, hilum basal.  Pappus multiseriate, outer united at base into a ring, bristles  scabrid, barbellate or plumose  (lateral projections of some pappus hairs more than twice as long as rachis width), deciduous. 

A genus of about 50 species, distributed in Southern Europe, North Africa, South-West and Central Asia; represented in Pakistan by 2 species.

 

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Phyllaries spinescent with apical 10 mm long spines. Pappus 20 – 25 mm long.

 

 

2. O. leptolepis

 

 

Phyllaries not spinescent. Pappus 6 – 8 mm long                .

 

1. O. acanthium

 
 
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