yS British Ftuigi. 



the liyplia or stem grows up througli the empty 

 zoosporangium, aud develops into a second, which in 

 like manner may eventually enclose a third, and so on, 

 hence in old specimens it is not unusucd to see two or 

 more empty zoosporangia one within another. In 

 other species the second zoosporangium growing 

 th.rough the first is supported on a lengthened hypha 

 or stem, and consequently carried outside the first. 



In the Mucoriiii the erect hyphen supporting the 

 sporangia are called sporangiopliores. The Pliy- 

 comycetes are all minute fungi, and would be included 

 in the category known as microscopic fungi, yet 

 the mycelium in many species forms felt-like 

 patches, often extending for several inches, and in 

 Phycomyces nitens the sporangiophores, although 

 slender, are often several inches long. The species of 

 Mucorini are saprophytic on decaying vegetable or 

 animal substances; the Peronosporece are parasitic 

 in the tissues of flowering plants ; the species of 

 Saprolegnia are aquatic saprophytes, whereas tbe 

 Entomoplithorece are mostly met with on insects. 



* PHYCOMYCETES. 



Fungi with, aseptate mycelium, parasitic on plants 

 or animals, or saprophytes, aerial or aquatic ; sexual 

 mode of reproduction by oogonia and antheridia, or 

 by conjugation of morphologically similar branches ; 

 asexual mode of reproduction by gonidia or 

 zoogonidia. 



Phycomyceice, De Bary, in Fuckel's Symb. Myc. 

 p. 60 ; Sacc. Syll. vii. p. 181 ; Brefeld, Mykol. Heft, 

 vii. p. 274. 



