Characters,Z. crustaceum,Z. johnsonii,Z. lichenoides,Z. maheshwarii,Z. manasiae,Z. olivaceum,Z. sessile,Z. tailichenoides, ,,,,,,,,, Thallus,"Crustose, green to brown","Crustose, Reddish green","Ribbon-shaped, green to brown","Crustose, dull green","Ribbon-shaped, green to pale yellow","Crustose, olive green","Ribbon-shaped, green to brown","Ribbon-shaped, green to brown", Shoot dimorphism,Absent,Absent,Absent,Absent,Absent,Present,Absent,Absent, Position of floriferous shoots,Scattered over the dorsal surface,Scattered over the dorsal surface,Sinuses of thallus lobes,Scattered over the dorsal surface,Margins and sinuses of thallus,Scattered over the dorsal surface,In the sinuses of thallus lobes,In the sinuses of thallus lobes, ,,,,,,,,, Gynophore,Present,Absent,Absent,Present,Absent,Absent,Absent,Absent, Bracts,4 to 6,3 to 4,4 to 6,6 to 8,2,6 to 8,4 to 6,4 to 5, Spathella apex,Obtuse,-,Acute,Obtuse,Obtuse,Obtuse,Round,Acute, Spathella surface,Smooth,-,Papillate,Smooth,Smooth,Smooth,Smooth,Smooth, Stigma,"Bilobed, equal lobes","Bilobed, equal lobes","Bilobed, equal lobes","Multilobed, unequal lobes","Bilobed, unequal lobes","Bilobed, unequal lobes","Bilobed, equal lobes","Bilobed, equal lobes", Capsule Shape,Ellipsoid,Globose,Ellipsoidal,Ellipsoid,Ellipsoid,Globose to ellipsoid,Globose,Globose, Capsule ornamentation,Capsule ornamentation,Capsule ornamentation,8-ribbed,6-ribbed,6-ribbed,6-ribbed,Smooth,8-ribbed,