Coefficient of Conservatism:
Coefficient of Wetness:
T. pannonicus of Michigan Flora.
A native of Eurasia, rarely escaped from cultivation. First collected in 1904 in Macomb Co.
Compared with T. pulegioides, the inflorescence is more elongate and interrupted, with axillary clusters as well as a terminal one. The stems are usually pubescent with long spreading hairs, especially near the summit. The 1904 Macomb Co. material is somewhat ambiguous, with stem pubescence short and leaves less linear than usual, but the stems are pubescent on all sides, the venation weak, and the inflorescence elongate; it may be hybrid involving T. vulgaris L. The nomenclatural situation here is complicated (see Schmidt (1973) and Greuter & Raus (1985)). This species is often referred to as T. marschallianus or T. pannonicus.