Jurinea pontica, Alpine jurinea, Kavotu hakkında genel bilgiler, faydaları ve zararları.
Jurinea, Alexandre Henri Gabriel de Cassini, 1821.
Tribus Cardueae: Generally robust and often spiny herbs. Leaves alternate, usually divided or lobed, seldom entire. Capitula mostly homogamous and discoid with the corolla lobes often long and sometimes unequal, or heterogamous and disciform with marginal flowers female or neuter, often radiant, rarely ligulate. Involucre cartilaginous or scarious; phyllaries imbricate, pluriseriate. Receptacle usually paleaceous or bearing long bristles or hairs. Flowers yellow or purplish, less commonly white. Style slightly thickened or with a ring of minute hairs near point of bifurcation. Anther bases mostly tailed. Achenes terete or compressed, unbeaked, or often with an umbo in the Cardunineae. Pappus scaly, bristly or hairy.
Jurinea: Perennial herbs, rarely suffrutescent or acaulous. Leaves unarmed, rosulate or alternate, entire, pinnatilobed or pinnatisect. Capitula homogamous, discoid, solitary to corymbose. Involucre cylindrical to globose; phyllaries (4-)5-6(-8) seriate, imbricate, linear to lanceolate (outer ones sometimes triangular), apex unarmed or spinulose, erect or recurved, adpressed to lax. Receptacle long bristly. Flowers lilac to purplish. Achenes narrowly obpyramidal, ± tetragonal, truncate above, with a membranous crown (coronula) around pappus base; umbo depressed barrel shaped or saucer shaped; hilum basal or nearly so. Pappus hairs stiff, pluriseriate, persistent, scabrous, barbellate or plumose, 2-3 innermost bristles longer and broader than rest. A difficult genus, particularly with regard to the species complex centred around J. mollis which needs population analysis and breeding studies.
Kocaeli’nde görülen Jurinea türleri:
1. Leaves all entire; stem leafy throughout; pappus scabrous to plumose
2. Cauline leaves attenuate at base
9. Pappus barbellate; involucre up to 1,5 cm long, borne on long naked peduncles 5. consanguinea
1. At least some leaves pinnatisect or pinnatilobed, stems naked or with small scales in upper part, or plants acaulescent; pappus scabrous or barbellate
11. Involucre subglobose to globose, 15-35 mm broad; phyllaries neither strongly adpressed nor keeled; leaf lobes usually broader
12. Involucre up to 30 mm broad; leaves pinnatisect, rachis wings less than 2 mm wide, or leaves simple
13. Stems narrower, or if as broad then not swollen and woody at base; not psammophytes
14. Capitula on peduncles more than 4 cm, several on branched stems or solitary
15. Outer and median phyllaries distinctly reflexed in upper third; outer ones acicular, 0,3-0,5 mm wide 6. mollis
15. Phyllaries adpressed or patent or with reflexed 1-2 mm tips; outer ones at least 1 mm wide
16. Outer phyllaries 10-12 x 3 mm, inner ones 12-16 x 1-1,5 mm 10. alpigena
16. Outer phyllaries much shorter and narrower than inner ones, forming a graded series
17. Capitula mostly solitary; phyllaries c. 5 seriate, outer ones 4 x 1-1,5 mm, inner ones 14-15 x 1,5 mm; leaves mostly rosulate, cauline ones reduced to scales 5. consanguinea
17. Capitula borne in corymbs; phyllaries 6-7 seriate more regularly and neatly imbricate, outer ones 2-4 x 1 mm, inner ones 10-12 x 1-2 mm; cauline leaves covering unbranched lower half of stem 11. pontica