Tordylium L.
Tordylium is a genus of 18 species, native to the Mediterranean region and southwestern Asia (Mabberley 2008). Its center of diversity obviously lies in Turkey where 17 species occur, nine of which endemic (Alava 1972, Duman 2000). Only one species, Tordylium maximum, is more or less widespread as a weed.
Tordylium belongs to the Heracleum clade and is, in its traditional circumscription, not monophyletic (Downie & al. 2000).
Literature:
Alava R. (1972) Tordylium L. In: Davis P.H. (ed.), Flora of Turkey and East Aegean Islands 4. Edinburgh Univ. Press, Edinburgh: 504-512.
Al-Eisawi D. & Jury S.L. (1988) A taxonomic revision of the genus Tordylium L. (Apiaceae). Bot. J. Linn. Soc. 97: 357-403.
Doğru–Koca A. (2016) Phylogeny of the genus Tordylium (Tordylineae, Apioideae, Apiaceae) inferred from morphological data. Nordic Journal of Botany 34: 111–119. [available online at: http://onlinelibrary.wiley.com/doi/10.1111/njb.00991/pdf]
Downie S.R., Katz-Downie D.S. & Watson M.F. (2000) A phylogeny of the flowering plant family Apiaceae based on chloroplast DNA rpl16 and rpoC1 intron sequences: towards a suprageneric classification of subfamily Apioideae. Amer. J. Bot. 87(2): 273-292. [available online at: http://www.amjbot.org/content/87/2/273.long]
Duman H. (2000) Tordylium L. In: Güner A., Özhatay N., Ekim T. & Başer K.H.C. (eds.), Flora of Turkey and East Aegean Islands (Suppl.2) 11. Edinburgh Univ. Press, Edinburgh: 144-145.
Mabberley D.J. (2008) Mabberley’s plant-book (3th ed.). Cambridge University Press, Cambridge: XVIII + 1021 p.