Page:An introduction to physiological and systematical botany (1st edition).djvu/283

 Rh his immortal Philosophia Botanica into 12 chapters and 365 sections, and reckoned seven parts of fructification as well as seven species of calyx.

7. Volva. Wrapper, or covering of the Fungus tribe, of a membranous texture, concealing their parts of fructification, and in due time bursting all round, forming a ring upon the stalk, as in Agaricus procerus, Sowerb. Fung. t. 190, and A. campestris, the Common Mushroom, t. 305.; Such at least is the original meaning of this term, as explained in the ''Phil. Bot; but it has become more generally used, even by Linnæus himself, for the more fleshy external covering of some other Fungi'', which is scarcely raised out of the ground, and enfolds the whole plant when young. See Agaricus volvaceus, t. 1, and Lycoperdon fornicatum, t. 198; also the very curious L. phalloides, t. 390, now made a distinct genus by the learned Persoon, under the name of Batarrea phalloides.