394
1294
Calyx present
1296
1295
Flowers with 3 bracts
at the base (a larger
central bract plus 2
smaller lateral bracts).
Stem not ending in a
tuft of apical leaves
Thesium bavarum
Schrank
1295
Flowers with a single
bract at the base.
Stems ending in a tuft
of apical leaves
Thesium
rostratum Mert. &
W.D.J. Koch
1296
Flowers yellow or
yellowish
1297
1296
Flowers white, pink,
blue or violet
1306
1297
Corolla with a long
tube, more or less bell-
shaped
1298
1297
Corolla with a very
short tube, not bell-
shaped
1301
1298
Inflorescence not
spike-like (flowers
with a clear pedicel)
1299
1298
Inflorescence spike-
like (flowers sessile or
almost so)
1300
1...,384,385,386,387,388,389,390,391,392,393 395,396,397,398,399,400,401,402,403,404,...444