that all hornworts produce.

Description

The spores are dark gray, dark brown or black. This distinguishes it from the related genus Phaeoceros, which produces yellow spores. The thallus lacks air chambers and scales, and has no well defined mid rib. It has unicellular smooth rhizoids in the ventral region. It is irregularly lobed, and exhibits rare dichotomous branching. The thallus has little to no tissue differentiation, being

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