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Home| California Moss eFlora |Jan 1 2013 ·| Two genera,
Jaffueliobryum and Coscinodon, have been removed from Grimmia on
the basis of the very distinctive calyptra: campanulate,
plicate, fringed basally. The uninitiated person viewing that
feature might even think of the distantly related genus,
Orthotrichum. Coscinodon has exserted capsules; Jaffueliobryum
has immersed capsules. Jaffueliobryum is a genus of mosses
occupying rocks in our southeastern deserts. One is alerted in
such areas to think of Jaffueliobryum when one sees an ashy
brown or tan moss with very long and decurrent hyaline awns. In
the field, our two species of Jaffueliobryum approach Crossidium
because of the dense and erect awns on the dry plant. see key to
Grimmia Etc. Key to Jaffueliobryum Species included here are in
Grimmiaceae: Jaffueliobryum raui (Austin) Thériot Jaffueliobryum
wrightii Sullivant in Sullivant & Lesquereux A. Leaves deeply
concave without a semblance of a ke