number of them, forming a bunch of threads unequal in length, and
bearing on their tips the hay-seed-like anthers, which are attached to
the threads by one of their points. The style is a long cylindrical
body, e (Fig. 2), which stretches from the ovary to the top of the
flower, where it splits into a head of spreading linear rays, ½ in. in
length. When the flower withers, the seed vessel, f (Fig. 2), remains on
the plant and expands into a large succulent fruit, inside which is a
mass of pulpy matter, inclosing the numerous, small, black, bony seeds.

It must not be supposed that all the genera into which Cactuses are
divided are characterised by large flowers such as would render their
study as easy as the genus taken as an illustration. In some, such for
instance as the Rhipsalis, the flowers are small, and therefore less
easy to dissect than those of Phyllocactus.

The stems of Cactuses show a very wide range of variation in size, in
form, and in structure. In size, we have the colossal Cereus giganteus,
whose straight stems when old are as firm as iron, and rise with many
ascending arms or rear their tall leafless trunks like ships' masts to a
height of 60 ft. or 70 ft. From this we descend through a multitude of
various shapes and sizes to the tiny tufted Mamillarias, no larger than
a lady's thimble, or the creeping Rhipsalis, which lies along the hard
ground on which it grows, and looks like hairy caterpillars. In form,
the variety is very remarkable. We have the Mistletoe Cactus, with the
appearance of a bunch of Mistletoe, berries and all; the Thimble Cactus;
the Dumpling Cactus; the Melon Cactus; the Turk's cap Cactus; the
Rat's-tail Cactus; the Hedgehog Cactus; all having a resemblance to the
things whose names they bear. Then there is the Indian Fig, with
branches like battledores, joined by their ends; the Epiphyllum and
Phyllocactus, with flattened leaf-like stems; the columnar spiny Cereus,