Ln. Evstatieva et al., A BIOSYSTEMATIC STUDY OF VALERIANA-OFFICINALIS (VALERIANACEAE) DISTRIBUTED IN BULGARIA, Plant systematics and evolution, 185(3-4), 1993, pp. 167-179
Valeriana officinalis L. is an extremely polymorphic polyploid complex
. On the basis of morphological, cytological, and phytochemical invest
igations of Bulgarian populations of V. officinalis the two subspecies
V. officinalis subsp. officinalis (2n = 14, 28) and V. officinalis su
bsp. collina (2n = 14, 28) were each subdivided into diploid and tetra
ploid cytotypes.