Reference

Vjera Bilusic Vundac, Edith Stabentheiner, Adelheid H. Brantner, Misko Plazibat (2011): Morphology and Distribution of Trichomes on Leaves in Seven Croatian Taxa of the Genus Stachys (Lamiaceae). – Phyton, Annales Rei Botanicae, Horn – 51_1: 161 - 176.