is known as Nothia
now had been mistaken for small branches of
(All the alleged Asteroxylon
slide collection at the Hunterian Museum, Glasgow, very probably have
to be re-interpreted, according to comparison with own samples, as
It is still confusing to see these branches, and
small sporangia now assumed to belong to Nothia, more often
expected associated with Asteroxylon,
and even immediately beside
cross-sections, while the very Asteroxylon
to be elusive.
After recognition as a separate species as late as
1964 , Nothia
was thoroughly described in 1979  and 2001 . Its
cross-sections are usually not circular because of numerous
mound-shaped emergences on the surface. (Note that any plant may appear
with a rugged outline in the chert as a result of shrivelling by drying
or fungus-induced shrinkage before silicification.)
build of the sporangia suggest an affiliation with the zosterophylls.
However, there seem to be reasons to refrain from such conclusion,
among them the same
questionable reason for which Aglaophyton
had been widely separated from Rhynia,
namely the absence of a tracheid wall pattern of the proper type.
One sporangium with exceptionally well preserved structure
of the capsule wall provides a surprise: See Rhynie
Chert News 33.
odd-shaped cross-sections there are some with the central strand
once or twice divided and eventually looking like a funny
face, one can be
nearly sure it is Nothia.
One of them is suitable as a logo for the issues of Rhynie
Annotation: As a complication, the aspect of cross-sections of shrivelled Horneophyton can be very similar to that of Nothia.
Annotation: See also Rhynie
Chert News 57.
 A.G. Lyon:
203 (1964), 1082-83.
El-Saadawy, W.S. Lacey:
Observations on Nothia
Palaeobot. Palyn. 27 (1979),
 H. Kerp, H.
Hass, V. Mosbrugger: New data
on Nothia aphylla,
D. Edwards (eds.): Plants Invade the Land, N.Y. 2001.