G. fimbriatum

Geastrum triplex may be confused with G. saccatum or G. fimbriatum, as the rays do not always crack around the perimeter to form a bowl under the spore case. However, it is larger than either of these species.[26] The combination of characteristics which distinguish G. triplex from other earthstars include the lack of debris adhering to the outer surfaces, the saucer-like base in which the spore case is seated, the relatively large size, the fibrillose peristome and the paler area surrounding the peristome separating it from the rest of the endoperidium.[21] Unlike some other Geastrum species, the rays of G. triplex are not hygroscopic: they do not open and close in response to changes in humidity.[17]



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