The Chromosome Morphology of Trillium flexipes Raf.
The Chromosome Morphology of Trillium flexipes Raf. in Virginia differs from that of Iowan T. flexipes, but only with reference to the B chromosome (Bailey 1958).  See:  Bailey, Paul C.  1958.  Differential chromosome segments in eight species of Trillium.  Bull. Torr. Bot. Club 85(3):  201-214.