It took a while to have this one on the shop, but when collecting seeds in the wild there is no time for fine observations, plus the flowers are missing ;) More than this, the Soldanella genus seems to be in revision all the time.
It is best to give this collection as S. major s.l. – which includes few species hard to distinguish.
The plants are similar with S. hungarica but much more vigorous and with more flowers/stem. Keep the collection site/year on the sowing label.
Germination: sow in late fall/winter.