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Book Excerpt: . Springingfrom the bases of these petals, we find the stamens, d (Fig. 2), a greatnumber of them, forming a bunch of threads unequal in length, andbearing on their tips the hay-seed-like anthers, which are attached tothe threads by one of their points. The style is a long cylindricalbody, e (Fig. 2), which stretches from the ovary to the top of theflower, where it splits into a head of spreading linear rays, 1/2 in. inlength. When the flower withers, the seed vessel, f (Fig. 2), remains onthe plant and expands into a large succulent fruit, inside which is amass of pulpy matter, inclosing the numerous, small, black, bony seeds.It must not be supposed that all the genera into which Cactuses aredivided are characterised by large flowers such as would render theirstudy as easy as the genus taken as an illustration. In some, such forinstance as the Rhipsalis, the flowers are small, and therefore lesseasy to dissect than those of Phyllocactus.The stems of Cactuses show a very wide range of variation in size, inform, and in structure. In size, we have the colossal Cereus giganteus, whose straight stems when old are as firm as iron, and rise with manyascending arms or rear their tall leafless trunks like ships' masts to aheight of 60 ft. or 70 ft. From this we descend through a multitude ofvarious shapes and sizes to the tiny tufted Mamillarias, no larger thana lady's thimble, or the creeping Rhipsalis, which lies along the hardground on which it grows, and looks like hairy caterpillars. In form, the variety is very remarkable. We have the Mistletoe Cactus, with theappearance of a bunch of Mistletoe, berries and all; the Thimble Cactus;the Dumpling Cactus; the Melon Cactus; the Turk's cap Cactus; theRat's-tail Cactus; the Hedgehog Cactus; all having a resemblance to thethings whose names they bear. Then there is the Indian Fig, withbranches like battledores, joined by their ends; the Epiphyllum andPhyllocactus, with flattened leaf-like stems; the columnar spiny Cereus, with deeply channellRead More
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