Krivomaz, Т. І.; Michaud, A.; Minter, D. W.
(CABI, 2012)
Diagnostic features. Hemitrichia clavata is sometimes difficult to distinguish from H. calyculata (Speg.) M.L. Farr, which is much more common. The deep cup which gradually widens from the stout stalk, the rough capillitium, ...