- He has been
credited for
having introduced the
terms amphithecium and
parathecium in an 1898
monograph on the
lichen genus Roccella. Darbishire, O.V. (1898)...
- in lichens, it is used to
refer to the paraphysis-lined
cavity in a
parathecium that ends in a pore, or more
generally to any pore from
which spores...
- be displaced, and the
cortex eroded. The
proper exciple forms a thin
parathecium and is
sometimes incon****uous. The
epithecium (upper
layer of the ascomata)...
- are part of a
parathecial ring that has a flat disc in the center. The
parathecium is 25–40 um wide and
tends to form
around the flat disc in the center...
- (spore-producing layer) and
hypothecium (layer
below the hymenium) are hyaline. The
parathecium (layer
surrounding the apothecium)
consists of
elongated cells, and the...
- t=hymenium, sp=spore, s=asci, p=paraphyses, e=epithecium, h=hypothecium, pt=
parathecium or excipulum, a=algal layer, m=medulla, r=cortex The
ascospores of Physcia...
-
structures (ostiole) is
centrally located. The
surrounding tissue,
called the
parathecium,
varies in
colour from
transparent to pale brown, but it does not have...
