. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. of the Pink tribe (figs. 305, 314); the ahinaceous, where the claw is less narrow, and there are distinct spaces between the petals, as in some species of Chickweed; cruciform, having four petals, often un- guiculate, placed opposite in the form of a cross, as seen in Wall- flower (fig. 315), and in other plants called cruciferous (crux, a cross, and fero, I bear). Ieeegulae Polypetalous Ooeollas.—The most marked of these is the papilionaceous (fig. 316), in which ther
. A Manual of botany : being an introduction to the study of the structure, physiology, and classification of plants . Botany. of the Pink tribe (figs. 305, 314); the ahinaceous, where the claw is less narrow, and there are distinct spaces between the petals, as in some species of Chickweed; cruciform, having four petals, often un- guiculate, placed opposite in the form of a cross, as seen in Wall- flower (fig. 315), and in other plants called cruciferous (crux, a cross, and fero, I bear). Ieeegulae Polypetalous Ooeollas.—The most marked of these is the papilionaceous (fig. 316), in which there are five petals ; one superior (posterior), e, placed next to the axis, usually larger than the rest, and folded over them in aestivation, called the vexillum or standard; two lateral, a, the ate or wings; two inferior (anterior), partially or completely covered by the alse, and often united slightly by their lower margins, so as to form a single keel-like piece, h, called carina, or keel, which embraces the essential organs. This corolla occurs in the Leguminous plants of Britain, or those plants which have flowers like the pea. Among the irregular polypetalous corollas might be included the orchideous (fig. 317), although it is really the perianth of a Monocotyledon. This perianth consists of three outer portions equivalent to the calyx, and three inner .parts alternating with them, constituting the petals. The latter are often very irregular, some being spurred, others hooded, etc.; and there is always one, called the labellum or lip (Fig. 317 I), which pre- sents a remarkable development, and gives rise to many of the anomalous forms exhibited by these flowers. Ebgulae Monopetalous oe Gamopbtal- ous Ooeollas.—These are sometimes campanu- late or hell-shaped, as in Campanula rotundifolia (fig. 318); infundihuliform or funnel-shaped, when the tube is like an inverted cone, and the limb becomes more expanded at the apex, 319); hypocrateriform or salver-shaped, when. as i
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