J. sambac is variable and includes a large
number of cultivars bearing single, double
flowers with elongated or rounded petals.
Four distinct sub-varieties of J. sambac on
the basis of shape of flower bud, petal
shape and number of whorls are reported4
.
The different varieties showed minor
variations in habit, internode length, size,
shape of leaf, calyx, number of whorls of
petals and their size and shape, size of open
flower and in the number of stamen, but
marked difference were observed in the
length of style and stigma (1)
.