Dicyclomine is a synthetic drug with anti-cholinergic(anti-muscarinic) activity and I think that you can't find in any plant. But 2 plants naming Hyocyamus niger and Atropa belladona containe anti-cholinergic agents such as atropine and schopolamine.

Thanks about your attention ,I know, but I want a plant wich has Dicycloamine or other plant with anti-chollinergic property (except Hyocyamus sp. and Atropa sp.)

check Datura stramonium

Atropa belladona,Hyoscymus muticus,and Datura species.Atropa acuminata are having antichollinergic properties.

thank you Mr.Ahuja

Almost many plants have been described, still few more I would like to add these are "Dubosia", "Mandragora officinarum (Mandrake root)", "Scopolia carniolica (Scopolia root) "

Broadly, all these herbs comes under Tropane alkaloid containing herb, so for more plants you can search for the plant having Tropane alkaloid (generally belongs to Solanaceae family)...