Abstract
The identity of Pohlia flexuosa Harv. with P. muyldermansii Wilcz. & Dem. is established. Recent gatherings from several Asiatic countries demonstrate that material of P. flexuosa occurs with propagula identical with those of P. muyldermansii var. muyldermansii, of var. pseudomuyldermansii Arts, Nordhorn-Richter and Smith and with a mixture of both and intermediate types of propagulum; var. pseudomuyldermansii cannot therefore be upheld as distinct. It is postulated that P. flexuosa has been introduced into Europe in two distinctive clones.