Pakistan Journal of Biological Sciences1028-88801812-5735Asian Network for Scientific Information10.3923/pjbs.2006.434.436Verbasum (Scrophulariaceae) in Urmia]]>KheiriSomayyeh KhayamiMasoud OsalooShahrokh KazempourMahmoodzadehAhmad 3200693Pollen morphology of seven species was investigated by light and Scanning Electron Microscopy (SEM). Pollen grains are monad and elliptic to oblique at the equatorial view, circular-triangle at the polar view, trizonocolporate, isopolar and spheroidal prolate, prolate or perprolate. The pollen is small or medium sized in V. szovitsianum Bioss., V. agrimonfolium (C. Koch) Hub-Mor., V. mucronatum Lam., V. sinuatum L., V. macrocarpum Bioss., V. oreophilum C. Koch var. oreophilum and V. cheiranthifolium Bioss., Exine ornamentation is reticulate but in V. agrimonifolium (C. koch) Hub-Mor., it is microreticulate.]]>Erdtman, G.,196054561564Dane, F. and G. Yilmaz,2002Verbascum L. species.]]>2002pp :151151Ghahreman, A. and F. Attar,1999Vol. I,pp: 473-475pp: 473-475Huber-Morath, A.,1978Verbascum L.]]>1978pp: 461-600pp: 461-600Juan, R. and I. Fernandez and J. Pastor,1997Verbascum (Scrophulariaceae).]]>80591598Lersten, N.R. and J.D. Curtis,1997Verbascum (Scrophulariaceae).]]>8416381645Moor, P.D. and J.A. Webb,1978Olmstead, R.G., C.W. de Pamphilis, A.D. Wolfe., N.D. Young, W.J. Elisons and P.A. Reeves,200188348361Valdes, B.,19871987pp: 486-547pp: 486-547Zohary, M.,1973pp: 310pp: 310