Asteraceae

Centaurea rigida

Centaurea L. Centaurea rigida BANKS ET SOL. Ömür: İki yıllık (bazen Yapı: ot Hayat formu: İlk çiçeklenme zamanı: 6 Son çiçeklenme zamanı: 7 Habitat: step, nadas tarla Minimum yükseklik: 600 Maksimum yükseklik: 1500 Endemik: - Element: İran-Turan Türkiye dağılımı: D. Anadolu Genel dağılımı: Suriye Çöl, K. Irak Bulunduğu kareler: B7 B8 C6 C7 C8

C. rigida Banks & Sol. in Russell, Aleppo ed. 2, 2:263 (1794). Syn: C. russeliana Buek, Ind. ad DC. Prodr. 2: vi (1840), nom. illegit.! C. myriocephala Schultz Bip. ex Boiss., Fl. Or. 3:682 (1875)! Ic: Ann. Nat. Hofmus. Wien 28:65 (1914); Boul., Fl. Lib. Syr. t. 234 (1930).   Biennial (sometimes perennial?), nearly glabrous, 40-90 cm, repeatedly branched from near base, many-capitulate. Basal and lower leaves lyrate with large oblong to triangular terminal segment and 1-4 pairs of lateral segments, median similar or pinnatilobate to entire and coarsely toothed, shortly decurrent, upper oblong to linear, sessile. Involucre 12-17 x 5-7 mm, oblong-conical. Appendage a simple erect spine, (2-)4-7(-9) mm. Flowers yellow, marginal not radiant. Achenes c. 5 mm; pappus (3-)4-5 mm. Fl. 6-7. Steppe, fallow fields, 600-1500 m.   Type: [Syria] prope Aleppo, Russell (BM!).   E. Anatolia. B7 Elaziğ/Diyarbakir: Ergani to Maden, 1200 m, D. 22046! B8 Diyarbakir: ıMermer, 825 m, D.M.Brown 502! Muş: Murat valley, 26 km from Muş to Varto, 1420 m, D. 46098! C6 Hatay: Kurd Da., 1200-1500 m, Haradj. 1117! Maraş: Maraş to Göksun road, 1300 m, Stn. & Hend. 5555! Gaziantep: nr Aintab (Gaziantep), 1865, Hausskn.! C6/7 Gaziantep/Urfa: Biredjik, nr Tschiflik, Sini. 1888:526! C7 Urfa: N. of Urfa, nr Nedjaruk, Hand.-Mazz. 1913! Adiyaman: 5 km from Adiyaman to Samsat, Alava 6987! C8 Diyarbakir: 6 km S. of Diyarbakir, 600 m, M.Zohary & Plitm. 19604-3! Diyarbakir, airfield, 680 m, Hub.-Mor. 9007! Mardin: Mardin, nr Khurs (Kavs), Sint. 1888:1024!   Syrian Desert, N. Iraq. Ir.-Tur. element. Well developed plants may form nearly globose bushes and are said to behave as 'tumble-weeds'. C. schizophylla Náb. (Publ. Fac. Sci. Univ. Masaryk Brno 52:42, t. 9; 1925) was observed by its author between Cizre and Zaho (C9 Mardin), but no collections from Turkey exist and it is doubtful if C. schizophylla is really specifically different from C. rigida, from which it is distinguished mainly by the pinnatipartite lower leaves and the longer spines (10-15 mm).