-Rhoeo spathacea is unusual in that its twelve chromosomes are involved in complex translocations that results in atypical meiosis with all chromosomes frequently joined end-to-end into a single ring. The detailed meiotic studies, for the fi rst time, revealed that alignment of chromosomes into a ring and / or a chain begins at very early prophase I. However, the cells at diakinesis and metaphase I do not exclusively have a ring or a chain of 12 chromosomes. Instead, they carry a range of chain confi gurations formed due to slipping of the chiasmata off the pairing segments in complex structures. While in 57.61% cells, at diakinesis, a ring or a chain was observed, in the rest 2-7 chain confi gurations existed. Similarly, at metaphase I a ring of 12 chromosomes was observed in 33.87% cells whereas in 66.13 % cells 2-9 chain confi gurations existed. The various groups of chromosomes in cells at diakinesis generally did not show any specifi c orientation pattern. However, in 17.31% cells a disjunctional arrangement of chromosomes was observed. At metaphase I also while in 82.26% cells chromosomes showed more or less non disjunctional orientations, in 17.74% cells regular arrangement of chromosomes was observed. Owing to non-disjunctional arrangement of chromosomes at metaphase I, the anaphase I distribution of chromosomes was erratic in 44.18% cells. Three to nine chromosomes were seen at two poles in 33.06% cells whereas in 11.11% cells 1-8 lagging chromosomes existed. Regular distribution of 6:6 was seen in 55.82% cells. The Pollen sterility recorded was very high i.e. 81.24% using cotton blue staining procedure. It is suggested that a wide range of chromosome confi gurations, hitherto unidentifi ed, might exist in Rhoeo spathacea which awaits to be discovered.
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