-
diagnostically useful, with
certain species including U. flavocardia, U.
fragilescens, U. subfloridana, U. silesiaca and U. wa****hii
showing blackening at...
-
species belongs to the
Usnea fragilescens group and is
related to
several other Usnea species including U. cornuta, U.
fragilescens, and U. esperantiana, but...
- that have a matt surface. This
feature is
typical for
species in the U.
fragilescens group. The
cortex (outer
protective layer) is thin,
comprising only 4–5–7%...
-
Usnea floriformis C.W.Dodge (1948)
Usnea foveata Vain. (1928)
Usnea fragilescens Hav. ex
Lynge (1921)
Usnea fulvoreagens (Räsänen) Räsänen (1935) Usnea...
-
elongate laterally at maturity, and by
growing on
species of the
Usnea fragilescens aggregate B.
minuta –
Characterised by
small (less than 1 mm)
brown to...
- M.A.; Nash III, T.H.; Zambrano, A. (2001). "A
revision of the
Usnea fragilescens group for Mexico". Bryologist. 104: 235–259. doi:10...
- Europe; Macaronesia; New Zealand;
North America;
South America Physcia fragilescens Zahlbr. (1928) – Asia
Physcia gomukhensis D.D.Awasthi & S.R.Singh (1978)...
- (2004) –
Australia Parmotrema fractum (Hale) Hale (1974)
Parmotrema fragilescens Krog (1991)
Parmotrema friabile Marcelli & C.H.Ribeiro (2002) – Brazil...
