Tanacetum aureum

Ekşi pireotu

Yeni düzenleme: Var. aureum, var.oligocephalum, var. heimerlei

Herb with rhizomatous, somewhat woody, rootstock. Stems 25-35 cm, leafy, greyish-pubescent. Basal leaves 2-3-pinnatisect, 8-15 cm , oblanceolate in outline, primary segments 10-25-paired, generally opposite, c. 1-2 cm, secondary segments 2-10-paired, oblong-obovate, 1-4 x 0.4-1 mm, obtuse, subacute or acute at apex, margins entire or again divided into 3-5 lobes, greyish-pubescent and glandular-pitted; cauline leaves similar, 5-7 on each stem, becoming smaller and sessile above, uppermost ones often 1-pinnati-sect. Capitula 7-10 in ± dense corymbs, sometimes solitary. Involucre 3-7 mm broad; phyllaries ovate to linear-oblanceolate, 2-4 x 1.25-1.75 mm, sub-glabrous or lanate-pubescent, margins usually brown, inner ones scarious above. Ray flowers 10-12, yellow; ligules 2-4 x 1.5-2 mm, shallowly 3-toothed at apex. Disc flowers c. 2 mm. Achenes 2-2.5 mm, 4-5-ribbed; corona crenulate, 0.1-0.2 mm. Fl. 5-7. Igneous rocky slopes, limestone cliffs and bare shaĺy slopes, 1670-3200 m.
1. Capitula numerous. 3-3.5 mm broad; ligules 1-1.5 mm; leaf lobes often linear, acute, softly pubescent  var. heimerlei
1. Capitula usually less than 10; ligules 2-5 mm; leaf lobes usually oblong, obtuse
     2. Involucre 10-13 mm broad; ligules 4-5 mm  var. oligocephalum
     2. Involucre 5-7 mm broad; ligules 2-3 mm
          3. Capitula usually solitary ; leaves 1-1.75 cm broad  var. monocephalum
          3. Capitula 5-12; leaves 2-3 cm broad  var. chiliophyllum
E. Caucasus, Azerbaijan, Soviet Armenia, N. Iran.