Guide to Liverworts of Oregon: Herbertus dicranus (Taylor ex Gottsche et al.) Trev.
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1b plants leafy > 3b leaves not divided, not ciliate > 6a oil bodies 2+ or unknown > 7b no small dorsal lobe > 10a succubous > 11b isophyllous > 25a leaves bilobed more than 0.5 > 26a leaves longer than 1 mm > Herbertus leaves divided less than 0.7 > Herbertus dicranus
Synonym: Herbertus sakuraii (Warnst.) Hatt.
Special Status: ORBIC List 2.
Recognition: The three rows of bifid leaves make this genus unmistakeable among liverworts; it is more likely to be taken for a moss. This species is slightly larger than H. aduncus, has less deeply divided leaves which are broader and rounded at the base and more clearly differentiated underleaves. The only species to be confused with H. dicranus is H. aduncus. In H. dicranus the leaves are 2-lobed for 0.5 or less of the leaf length; in H. aduncus leaves are lobed to 2/3 of the leaf length. In H. dicranus the leaves are strongly bulging at the base; in H. aduncus leaves do not bulge at the base. The underleaves of H. dicranus tend to be relatively broader than the lateral leaves; underleaves of H. aduncus are similar to the lateral leaves (Schofield 2007).
Distribution: On rock cliffs. In Oregon known only from Saddle Mountain, Clatsop County.
Comments: This plant was known in our region as Herbertus sakuraii until it was synonymized with Herbertus dicranus by Hodgetts (2003).
Saddle Mountain, Clatsop Co., Oregon. W.B. Schofield 68047 (UBC).
Saddle Mountain, Clatsop Co., Oregon. W.B. Schofield 72298 (UBC).