A natural hybrid probably of T.argentina x T.albertiana. From the pollen test very irregular pollen were observed that did not germinate in vitro. T.albertiana was taken for the blanco on the same agar plate and germinated well. It is not observed that T.argentina is flowering the same period as T.albertiana. (Personal communication EG)
Probably of hybrid origin (H .Luther pers . comm.). W.Till (pers. comm. ) suggests that the parents may be T. albertiana Vervoorst and T. argentina C.H . Wright. —SeeKiff 1991p. 18
