Asteraceae

Centaurea rhizantha

Centaurea L. Centaurea rhizantha C. A. MEYER Ömür: Çok yıllık Yapı: ot Hayat formu: İlk çiçeklenme zamanı: 6 Son çiçeklenme zamanı: 7 Habitat: kayalık yamaç, çağıllık Minimum yükseklik: 900 Maksimum yükseklik: 3600 Endemik: - Element: İran-Turan Türkiye dağılımı: D. Anadolu Genel dağılımı: Transkafkasya, KB. İran Bulunduğu kareler:A5 A8 A9 B3 B5 B6 B7 B9 C9 C10

C. rhizantha C.A.Meyer, Verz. Pfl. Cauc. 64 (1831). Syn: C. glaucescens Fisch. & Mey. in Ann. Sci. Nat. sér. 4, 1:31 (1854)! C. grossheimii Sosn. in Bot. Zhurn. 34(3): 288 (1949)! C. sessilis Willd. var. pinnatiloba Rech. fil. in Symb. Bot. Upsal. 11(5):33 (1952)! C. rhizanthoides Tzvel. in Fl. URSS 28:620(1963)! Ic: Fl. URSS 28: t. 27 (1963).   Perennial with woody rootstock (sometimes profusely branched). Capitulum solitary, sessile or nearly sessile (stem up to 2 cm, very rarely more) in a rosette of leaves. Leaves sparsely to densely covered with septate hairs, very variable in outline, most often lyrate with triangular to lanceolate terminal segment and l-3(-4) pairs of smaller lanceolate lateral segments or broadly lanceolate and entire or with a single lobe near base on each side. Involucre 15-20(-23) x 10-15(-18) mm, ovoid. Appendages small, straw-coloured to light brown, erect or reflexed, narrowly triangular, with l-4(-5) pairs of cilia (1-3 mm) and terminal l-4(-5) mm spinule, appendages sometimes reduced to a mere spinule. Flowers yellow, marginal not radiant. Achenes 5-6 mm; pappus 1-2 mm. Fl. 6-7. Rocky slopes and screes, 900-3600 m.   Type: [Talysh] in campis altiorum montium Talüsch, alt. 1829-2011 m, C.A.Meyer (LE! G!).   Mainly E. Anatolia. A5 Amasya: Logman, 900-1000 m, Bornm. 1889:1098! A8 Erzurum: pass W. of Tortum, 1900 m, Markgraf 10994! A9 Kars: Konk, between Ardahan and Yalnizçam, 1950 m, D. 29609! B3 Afyon: Mehmedkoi, 1000 m, 1848, Tchihatcheff (type of C. glaucescens)! B5/6 Kayseri/Sivas: Kayseri to Sivas, 1200 m, Balls 1433! B6 Sivas: 17 km from Gürün to Sivas, 1680 m, Hub.-Mor. 11949! Maraş/Malatya: Elbistan to Darende, G.Post 515! B7 Tunceli: Munzur Da. above Ovacik, 2200 m, D. 31211! B9 Erzurum: Çakmak Da. above Karayazi, 2350 m, Watson et al. 1630! Ağri: between Ağri and Doğubayazit, 1670 m, 22 vi 1964. M.Zohary & Plitm.! Bitlis: Pelli Da. above Pelli, 2750 m, D. 22475! B9 Van: Kerikas Da. S.W. of Arpat, 2700 m, Frödin 109 (type of C. sessilis var. pinnatiloba)! Kavuşşahap Da., 3200 m, D. 23106! C9 Hakkari: Kale Mame supra Hoz, 2600 m, Nábélek 3682! C1O Hakkari: Cilo Da., 3600 m, D. 24195! D. 24218!   Transcaucasia, N.W. Iran. Ir.-Tur. element. Related to C. sessilis and C. armena. Plants with the appendages reduced to a mere spinule and plants with undivided leaves look rather distinctive but it seems impossible to separate them from the more typical plants with which they are connected by numerous transitional forms. There are some collections with the appendages larger and with more cilia ± intermediate between C. rhizantha and C. armena, e.g. A8 Erzurum: 2 km N. of Karayollari gölyurt bakimevi, 2300 m, Battler 14217! B7 Erzincan: nr Sürek, Sint. 1889:1063!