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Nothia
''Nothia'' was a genus of Early Devonian vascular plants whose fossils were found in the Rhynie chert in Scotland. It had branching horizontal underground stems (rhizomes) and leafless aerial stems (axes) bearing lateral and terminal spore-forming organs (sporangia). Its aerial stems were covered with small 'bumps' (emergences), each bearing a stoma. It is one of the best described early land plants. Its classification remains uncertain, although it has been treated as a zosterophyll. There is one species, ''N. aphylla''.〔
==History of discovery==
Fossilized remains, including bare stems (axes) and detached spore-forming organs (sporangia), were first described by Kidston and Lang in 1920 from the Rhynie chert of Aberdeenshire, Scotland – rocks which are of Pragian age (). The fragments were considered to be parts of ''Asteroxylon mackiei''. In 1964 Lyon described sporangia belonging to ''Asteroxylon mackiei'' and suggested that Kidston and Lang's specimens were a new species which he called ''Nothia aphylla''. The first full description based on further specimens was published in 1979. A very detailed description was published in 2001, making this species one of the best-known early polysporangiophytes.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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