. The elements of botany for beginners and for schools. Botany. 168. Leaves for Climbing are various in adaptation. True foliage- leaves serve this purpose; as in Gloriosa, where the attenuated tip of a sim- ple leaf (otherwise like that of a Lily) hooks around a supporting object; or iu Solanum jasminoides of the gardens (Fig. 172), and in Maurandia, etc., where tlie leaf-stalk coils round and clings to a support: or in the compound leaves of Clematis and of Adlnmia, in which both the leaflets and their stalks hook or coil around the support. 109. Or in a compound leaf, as in the Pea and most
. The elements of botany for beginners and for schools. Botany. 168. Leaves for Climbing are various in adaptation. True foliage- leaves serve this purpose; as in Gloriosa, where the attenuated tip of a sim- ple leaf (otherwise like that of a Lily) hooks around a supporting object; or iu Solanum jasminoides of the gardens (Fig. 172), and in Maurandia, etc., where tlie leaf-stalk coils round and clings to a support: or in the compound leaves of Clematis and of Adlnmia, in which both the leaflets and their stalks hook or coil around the support. 109. Or in a compound leaf, as in the Pea and most Vetches, and in Cobsea, while the lower leaflets serve for fohage, some of the uppermost are developed as tendrils for climbing (Fig. 167). In the common Pea this is so with all but one or two pairs of leaflets. 170. In one European Vetch, the leaflets are wanting and the whole petiole is a tendril, while the stipules become the only foliage (Fig. 173). 171. Leaves as Pitchers, or hollow tubes, are familiar in the common Pitcher-plant or Side-saddle Flower (Sarracenia, Fig. 174) of our bogs. These pitchers are generally lialf full of water, in which flies and other in- sects are drowned, often in such numbers as to make a rich manure for the plant. More curious are some of the southern species of Sarracenia, which seem to be specially adapted to the capture and destruction of flies and other insects. Fig. 172. Leaves of Solanum , the petiole adapted for flimhing. Fig. 173. Leaf of Lathyrus Aphaca, consisting of a pair of stipules ami a Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Gray, Asa, 1810-1888. New York : American Book Company
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