1. Like a sac

Encyclopedia: Saccular

• order Pycnogonida
• order Radiolaria
• order Rajiformes
• order Ranales
• order Ranunculales
• order Raptores
• order Rhamnales
• order Rheiformes
• order Rhoeadales
• order Rhynchocephalia
• order Rickettsiales
• order Rodentia
• order Rosales
• order Rubiales
• order Salicales
• order Salientia
• order Santalales
• order Sapindales
• order Saprolegniales
• order Sarcosporidia
• order Sarraceniales
• order Saurischia
• order Sauropterygia
• order Scandentia
• order Sclerodermatales