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Published In: Botanical Magazine, Tokyo 34: 147. 1920. (Bot. Mag. (Tokyo)) Name publication detailView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 5/13/2022)
Acceptance : Accepted
Project Data     (Last Modified On 8/8/2020)
Contributor Text: Abdul Ghafoor & M. Qaiser
Contributor Institution: Centre for Plant Conservation, University of Karachi – Pakistan
Synonym Text:

Paraixeris Nakai in Bot. Mag. (Tokyo) 34: 155. 1920; Tzvelev in Bobr. & Tzvelev, Fl. SSSR. 29: 396. 1964; Ixeris subg. Crepidiastrum (Nakai) Stebb. in J. Bot. 75. 1937; Crepidifolium Sennikov & Illarionova, Bot. Zhurn. 82(5): 113-116. 1997; Geblera Kitag in J. Jap. Bot. 13: 433. 1937 [non Geblera Fisch. & C. A. Mey].


 

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Erect, ± suffrutescent herbs with milky sap and stout, simple or branched mostly leafy stems, sometimes plants stoloniferous. Leaves alternate, silmple or pinnate to bipinnate with linear-lanceolate or filiform lobes, cauline leaves when present usually amplexicaul. Capitula 5-20-flowered,  homogamous, ligulate. Involucre narrowly cylindrical. Phyllaries 2-seriate, outer phyllaries narrowly membranous-margined, inner ones  5 or 8, linear-lanceolate, much longer than outer few phyllaries. Receptacle naked, flat, alveolate. Florets yellow or orange-yellow, with 5 long teeth, longer than involucre. Anthers sagittate at base, with triangular appendages at apex. Style branched, filiform. Cypselas somewhat fusiform, brownish to dark brown, with 5 main ribs alternating with 1 or 2 secondary ribs (then looking 10-15-ribbed), antrorsely papillose scabrid in upper region. beak fusiform, 1/5 to ½ of cypsela body,  slightly flattened dorsally; very small, stout.  Pappus white, 1-seriate, consisting of many scabrid bristles, early caducous.

A small genus with c. 7   species (Mabberley, 2008),  distributed from Central to East Asia including North Pacific Islands, represented by 4 species in Pakistan.

 

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1.

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Inner phyllaries 5. Florets 5 or 6 in each capitulum.

 

 

3

 

Inner phyllaries (7-) 8. Florets 8-20 in each capitulum.

 

 

2

2.

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Involucre  0.8 – 1.1 cm long, 2.5 – 3 mm wide at anthesis. Anther tube 3.5 – 5 mm long. Cypselas black  or blackish. 

 

 

2. C. tenuifolium

 

Involucre 1 – 1.4 cm long, (3.5-) 4 – 6 mm wide at anthesis. Anther tube 5 – 6 mm long. Cypselas   usually brownish.

 

 

 

1. C. diversifolium

3.

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Stem divaricately branched. Leaf petiole basally broadened and brown. Capitula  solitary, terminal on ultimate branches.        

 

 

4. C. afghanicum

 

Stems paniculately branched. Leaf petioles slender, basally with well-developed, dentate or  dissected auricles. Capitula in paniculate-corymbiform synflorescence.

 

 

3. C. chelidonifolium

 
 
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