Asteraceae



Tanacetum argyrophyllum (C. KOCH) TVZEL.
var. subvirescens (DC.) GRIERSON
Tanacetum argyrophyllum (C. KOCH) TVZEL.
var. subvirescens (DC.) GRIERSON

Tanacetum L. (EMEND. BRIQ.)
Tanacetum argyrophyllum (C. KOCH) TVZEL. var. subvirescens (DC.) GRIERSON
Ömür: Çok yıllık
Yapı: ot
Hayat formu:
İlk çiçeklenme zamanı: 6
Son çiçeklenme zamanı: 8
Habitat: akarsu kenarı, kayalık yamaç, çağıllık
Minimum yükseklik: 1630
Maksimum yükseklik: 2000
Endemik: -
Element: İran-Turan
Türkiye dağılımı: D. Anadolu
Genel dağılımı: K. ve KB. İran
Bulunduğu iller
Bulunduğu kareler : A7 A8 A9 B5 B6 B7 B8 B9 B10 C7 C9 C10

 
T. argyrophyllum (C.Koch) Tvzel. in Sched. Herb. Fl. URSS 16:121 (1966). Figure 14, p. 267.
Rootstocks woody, rhizomatous and often fibrous. Stems 25-40 cm, leafy, greyish-tomentose. Basal leaves 2-3-pinnatisect, 10-20 cm on 3-8 cm petioles, oblanceolate in outline, primary segments 12-17-paired, 1-4 cm, secondary segments 5-10-paired, 1-7 x 0.5-3 mm, simple or 3-9-lobed, lobes obtuse or sub-acute, ± densely greyish-tomentose and glandular-punctate; cauline leaves similar, becoming smaller and sessile above, uppermost often 1-pinnatisect. Capitula numerous (20-120) in terminal corymbs. Involucre 3-4(-6) mm broad; phyllaries usually pale-margined, outer lanceolate, 2 x 0.4 mm, inner linear-oblanceolate, obtuse, scarious at apex, 2.5-3.5 x 0.75-1.25 mm. Female flowers 8-12, inconspicuous, 2.75 mm, 3-5-lobed at apex, yellow. Disc flowers 2.5 mm. Achenes 4-5-ribbed, 1.5-1.75 mm; corona ± entire, c. 0.3 mm. Fl. 6-8. Stream-sides, rocky slopes and scree, 760-2900 m.
1. Basal leaves (incl. petiole) usually less than 15x2 cm; involucre 3-4 mm broad  var. argyrophyllum
1. Basal leaves (incl. petiole) 20-28 x 3-5 cm; involucre 5-6 mm broad
  2. Rachises broad (1.5-2 mm), decurrent between lobes and segments  var. polycephalum
  2. Rachises narrow (less than 1 mm), not decurrent between lobes and segments  var. subvirescens
var. subvirescens (DC.) Grierson in Notes R.B.G. Edinb. 33:434 (1975). Syn: Pyrethrum myriophyllum Meyer var. subvirescens DC, Prodr. 6:59 (1838);
Type: [Soviet Azerbaijan] Karabagh et Aderbidjan Persiae, Szovits (photo E!).
E. Anatolia. A7 Gümüşane: Koesedagh (Köse Da.), Sint. 1890:3254! B8 Erzurum: 10 km N. of Hinis, 1630 m, D. 46235! B9 Van: 24 km from Gürpınar to Hoşap, 2000 m, D. 44696! C10 Hakkari: 27 km from Yüksekova to Şemdinli, 1850 m, D. 45067!
N. & N.W. Iran. Ir.-Tur. element.