. The families of flowering plants. Plants; Phanerogams. FAMILIES OF FLOWEEING PLANTS 127 yellow, rarely purple or white flowers, and either palmate or pinnate compound leaves, those of the palmate type being frequently composed of five leaflets, so that the plants have received the name of cinquefoil or five-finger. The closely allied genus Comarwm illustrates practically the same type (see Fig. 112). The tormentil {P. Tonnentilla) is the only species possessing marked medicinal properties. Fragaria, the strawberry, is another genus whose members are mainly of northern distribution. Wild stra
. The families of flowering plants. Plants; Phanerogams. FAMILIES OF FLOWEEING PLANTS 127 yellow, rarely purple or white flowers, and either palmate or pinnate compound leaves, those of the palmate type being frequently composed of five leaflets, so that the plants have received the name of cinquefoil or five-finger. The closely allied genus Comarwm illustrates practically the same type (see Fig. 112). The tormentil {P. Tonnentilla) is the only species possessing marked medicinal properties. Fragaria, the strawberry, is another genus whose members are mainly of northern distribution. Wild strawberries, of one sort or another, occur through- out the country; and we are all familiar with the advances made by horticultural science in the domes- tic strawberry. It should be pointed out that the edible portion of this fruit consists of the enlarged pulpy axis or receptacle, while the so-called " seeds " embedded on its surface are the real fruits, each being a small one-seeded achene. In the raspberry and blackberry, members of the genus Bubus, the fruit is of wholly different structure, consisting of a coherent mass of little stone-fruits or drupes, which when ripe pull easily away from the dry columnar recep- tacle, Bubus is likewise of temper- ate distribution, but its species are found in several continents; they are especially numerous and very diffi- cult to identify in Europe. The lit- tle Arctic and alpine herbs belong- ing to the genus Dryas are somewhat similar to the preceding in the appearance of their flowers, but the nu- merous achenes, when ripe, are tipped with long plumose styles like those of a clematis. In Gernn, a genus which furnishes some ornamen- tal species, the styles are also persistent, but not always plumose. The same floral structure may be seen in the mountain mahogany {Cercocar- pus) and several allied trees of the western States. The herb known as agrimony {Agrimonia Eupatoria) was formerly of much repute in med- icine. Its leave
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