88 OUTLINES OF HHITISH FUNGOLOGY. 



In conclusion, it may be well to caution young students of 

 Fungology against confounding galls with Fungi. The simi- 

 larity of form which often exists between them is surprising, 

 as if Nature delighted in reproducing the same form under 

 circumstances so very different. Neither must he confound 

 with Fungi the diseased hairs of leaves, which assume such a 

 variety of forms and colours, with true epiphytes. These 

 forms, indeed, arc all registered by botanists under the genus 

 Erineinn, but they have no more pretence to be admitted 

 amongst Fungi than oak-apples or oak-spangles.* 



* Smce the above was written, I have seen De Bary's paper on the produc- 

 tion of asci in httle swellings whicli occiu' on the giUs of Agancus mdlewi, after 

 the white spores have fallen. This important obsei-vation requires further in- 

 vestigation ; but even though it should turn out, wliich I do not think probable, 

 that all Hvinenoinycetes have a secondary form of fruit, tlie arrangement which 

 follows would not cease to be natural, though the terms under which it is ex- 

 hibited would require to be altered. See ' Botanische Zeitung,' 1859. 



