 At least in North America , Calostoma cinnabarinum is distinctive and easily recognizable . Two other species of Calostoma also occur in the eastern United States . C. lutescens has a thinner gelatinous layer and a predominately yellow middle layer , or mesoperidium , with the red color confined to the peristome . It also possesses a well @-@ defined collar at the base of the spore case , a longer stipe , and globose , pitted spores . C. ravenelii is not gelatinous , but instead has warts adorning the spore case , and is smaller than C. cinnabarinum . It also has a reddish peristome but is otherwise clay @-@ colored . Unlike C. lutescens , the spores of C. ravenelii cannot be distinguished from those of C. cinnabarinum except through the use of atomic force microscopy . 
