Some general triploid Hemerocallis research:
Chromosome Numbers in Hemerocallis, with Reference to Triploidy and Secondary Polyploidy
A. B. STOUT
CYTOLOGIA 3:250-259, 1932
Cytological Studies on the Hybrids between Triploid and Diploid Hemerocallis
Michio Matsuoka
Japanese Journal of Breeding 22:168-171, 1972
MEIOSIS IN DIPLOID AND TRIPLOID HEMEROCALLIS
S. O. S. DARK
New Phytologist Volume 31, pages 310–320, 1932
