SECT. I. CONSERVATIVE ORGANS. 241 



any conspicuous root ; being attached to some ap- 

 propriate basis of support merely by means of a 

 large and flattened surface. Of those that have 

 conspicuous roots some are furnished with a few 

 fibrous productions, by which they may partly 

 adhere to the soil or substance on which they grow, 

 and partly absorb nourishment ; and others with a 

 knob-like protuberance, or with several such pro- 

 tuberances, which seem to constitute their root. 



The Frond. The frond, in many of the Fungi, Modifica- 

 is merely a thin, flat, and leathery sort of substance, u< 

 adhering to a basis of support by means of the 

 whole of its under surface, as in the Boleti. In 

 others it is globular and sitting, as in Lycoperdon; 

 and in others it is bell-shaped and sitting, as in 

 Nidularia. But in a variety of genera it is also 

 furnished with a stipe, which is erect or crooked j 

 cylindrical or compressed ; hollow or solid ; vary- 

 ing in different species from the size of a crow-quill 

 or less, to an inch or more in diameter ; and from 

 being almost sessile, to six or eight inches in 

 height. Sometimes it is simple and sometimes 

 branched, and sometimes beautifully coloured; but 

 always destitute of foliage. 



Of the Stipitate Fungi (PI. VII. Fig. 13.), aPileusot 

 great many are furnished with a sort of conical or cap ' 

 flattened production surmounting the stipe, and 

 attached to it at right angles, sometimes by the 

 centre, and sometimes by the one side. ...This pro- 



* 



duction has obtained the appellation of the Pi/ens 

 VOL. I, R 



