Page:Parsons How to Know the Ferns 7th ed.djvu/55

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tered fronds. The fronds of the Brake are more or less solitary, rising from distinct and somewhat distant portions of the rootstock. The Botrychiums usually give birth to a single frond each season, the base of the stalk containing the bud for the succeeding year.

Fig. 1Fig. 2Fig. 3

A frond is simple when it consists of an undivided leaf such as that of the Hart's Tongue or of the Walking Leaf (Fig. 1).

A frond is pinnatifid when cut so as to form lobes extending half-way or more to the midvein (Fig. 2).