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Published In: Phytologia 55(1): 6. 1984. (Phytologia) Name publication detailView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 5/12/2022)
Acceptance : Accepted
Project Data     (Last Modified On 8/9/2020)
Contributor Text: A. Ghafoor
Contributor Institution: Centre for Plant Conservation, University of Karachi – Pakistan
Synonym Text:

Crepis sect. Ixeridopsis Babc. in Univ. Calif. Publ.  Bot.22: 212. 1947.


 

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Low-growing, usually basally branched, tufted or slender, mostly delicate perennial herbs with  slender well-branched woody rootstock and/or   vertical tap roots. Leaves in basal rosette  or along stem, attenuate to petiole, rotund to obovate or spathulate, or oblanceolate-linear, glabrous. Capitula 5-15-flowered, pedunculate, erect, few in a synflorescensce. Involucre cylindric, glabrous or tomentose throughout. Phyllaries green to dark-green, 2-few-seriate, glabrous or sometimes setulose or arachnoid hairy, outer ones 1/4 – 1/3 times as long as the flat or apically crested, linear-lanceolate, subequal inner phyllaries. Receptacle epaleate. Florets yellow or pale purplish-red or purple, with corolla tube usually longer than ligule. Cypselas mostly pale-brown or stramineous, terete or ± fusiform,  not flattened, thinly 10-ribbed, ribs unwinged, apically truncate, attenuate or beaked. Pappus caducous or persistent, composed of white, scabrid bristles.

A small genus consisting of  11 species (N. Kilian & C. Shih, op. cit.) distributed in Central, SW, and NE Asia and North America. Represented in Pakistan by 3  species.

 

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1.

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Involucres and peduncles hairy. Cauline leaves almost as large as basal rosetted ones. Inner phyllaries dorsally prominently corniculate near apices.

 

 

 

1. A. corniculata

 

Involucres and peduncles glabrous. Cauline leaves smaller than the basal rosetted ones. Inner phyllaries dorsally not corniculate near apices                .                                              

 

 

2

2.

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Plants dichotomously much or intricately branched from the base. Pappus white.

 

 

2. A. flexuosa

 

Plants little or poorly branched from the base. Pappus pale orange-brown.

 

3. A. benthamii

 
 
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