Pagina 167 - Flora of the Southern Carnic Alps

167
544
Leaf margin not spiny.
Fruits cylindrical Crepis biennis L.
544
Leaf margin slightly
spiny. Fruits strongly
compressed
545
545
Stigma bright yellow.
Stems branching only
at the top. Fruits with
5 longitudinal ridges
on each side
(magnifying glass)
Sonchus arvensis
L. subsp. arvensis
545
Stigma olive green.
Stems branching from
the base. Fruits with 3
longitudinal ridges on
each side.
546
546
Leaves matt, not at all
or only weakly spiny
on the margin,
clasping the stem with
pointed basal lobes.
Fruits warty along the
ridges
Sonchus oleraceus
L.
546
Leaves shiny, very
spiny at the margin,
clasping the stem with
rounded basal lobes.
Fruits smooth along
the ridges
Sonchus asper (L.)
Hill subsp. asper