Fig. 76.—Leaves proceeding from the ovary of Nymphæa.
For other illustrations of increased leaf-formation, see Multiplication of foliar organs.
Fig. 77.—Leontodon. Scape with two leaves; the bracts of the involucre are also leafy.
Production of leaves on a usually leafless inflorescence.—The development of the bracts of an inflorescence to such an extent that they resemble ordinary leaves is elsewhere alluded to as of common occurrence. It happens far less frequently that leaves are developed on an inflorescence usually destitute of them, without any metamorphosis or substitution, and without any formation of adventitious buds, such as happens in prolification. Such a partial change from a floriferous to a foliiferous branch may be seen in a specimen of Sambucus nigra in the Smithian herbarium in the Linnean Society, where the ultimate branches of the cyme bear small leaves. My attention was directed to this specimen by the Rev. W. Newbould.
Jacquin figures an analogous case in Sempervivum sediforme,[152] in which the branches of the inflorescence were prolonged into leafy shoots.