The conclusions to be drawn from these previous
works are conflicting with respect to
chromosome numbers, as well as chromosome
morphology in several species. According to
Bose (1965) two distinct ploidy series exist in
Crinum, with basic numbers x= 6 and x= I I .
Later authors refuse to accept the basic number
x= 6, which seems to be due to inaccurate
counts. JONI:S and SMiw (1967) have shown that a
new basic number (x= 12) occurs in populations
of C. ornatum (Linn. f.) Bury (syn. C. zeylunicutn
(L.) L.) in Ghana. JONH (pers. comm.) has suggested
that basic chromosome numbers may
change through centric fusions. KAMMACHaEnRd
AKi.. Ass (1975) have found a new basic number
x= 10 in C. distichum Herb. in The Ivory Coast.
They suggest a dislocation in Stebbins' sense to
explain this new number. NORDALet al. (1977)
found the somatic numbers 2n= 22 and 2n= 30 in
C. zc~ylanic~umfr om East Africa.