I04 Bi'itish Fungi. 



dospores supported singly or arranged in a verticillate 

 manner on long, slender hyph^e springing from the 

 mycelium, globose, ecliinulate, 20 ix. 



ILortiereUa polycephala, Coemans, Bull. Ac. Belg. 

 ser. ii. part i. p. 536, t. 15; Sacc, Syll. vii. 755 ; Yan 

 Tiegh. Ann. Sci. Xat. ser. v. vol. xvii. p. 348, t. 24, 

 figs. 80—89. 



On decaying fungi and on dung. Rare. 

 Yan Tieghem has shown by cultures that the 

 present species is very variable in the mode of branch- 

 ing, sometimes producing the apical sporangium only. 

 The mode of branching cannot be relied upon as a 

 specific character. 

 JlortiereUa candelahrum, Yan Tiegh. and Le Mon. 

 Mycelium white, thin, dichotomously branched ; 

 sporangiferous hyphse erect, base incrassated, be- 

 coming very slender upwards, branches usually 

 arranged in a corymbose manner, incrassated at the 

 base, sporangia globose, gonidia globose, hyaline,' 

 variable in size, 4-10 /jl diameter; chlamydogonidia 

 interstitial or terminal, on short lateral branches of 

 the mycelium, spherical, elliptical, or irregular, up to 

 40 (JL diameter. 



Mortierella candelahrum, Yan Tiegh. and Le Mon. 

 Ann. Sci. Xat. ser. v. vol. xvii. p. 348, pi. 24, figs. 

 99_102; Sacc. Syll. vii. 761. 

 On decaying organic substances. 

 This species has not been met with in Britain, but 

 is introduced on account of the following, which is 

 considered as a variety of the present species, having 

 been met with by Mr. Grove near Birmingham. 



Yar. minor, Grove. Sporangiferous hypha branched 



