220 



RESEARCHES ON FUNGI 



Sporangiophore rarely emerging from a rudimentary trophocyst 

 (which is usually wanting), slender, simple or branched, with at most 

 two branches. Sporangium globose, faintly depressed from above, 

 90-130 [i, in transverse diameter, brown above, then blackish, lower 

 zone not cutinised and forming a broad annulus of the membrane 

 by the gelatinisation of which the spores are afterwards set free ; 

 columella shortly conical, deep-violet in colour ; spores oval, 

 7-10 [i long, hyaline, but with a smooth pallid violaceous membrane. 



On dung, in the north of Italy. 



Illustration: Fig. 110. 



5. Pilaira Moreaui Ling, in " Etude morphologique, cytologique 



ff'^ 



Fig. 111. — Pilaira Moreaui Ling. No. 1, young sporangium. No. 2, 

 mature sporangium, seen in moist air. No. 3, the dehiscence of the 

 sporangium under the influence of water which swells its lower part. 

 No. 4, columellae after the fall of the sporangium : a, in profile ; 

 b, from below. No. 5, spores. No. 6, a germinating spore. No. 7, 

 a germinating chlamydospore. From Ling Yong's Etude. Magnifi- 

 cation : nos. 1-4, 60 : no. 5, 300 ; nos. 6 and 7, 70. 



et microchimique d'une nouvelle Mucorinee, Pilaira Moreaui " 

 (1926). See also Rev. generale de Botanique, xlii. 743. 



Sporangiophores lax, hyaline, not branched, erect, soon de- 

 cumbent, 10-12 cm. high, 30 y. broad. Sporangia at first yellow, 

 depressed, when mature globose, intensely bluish-black, 300-400 y. 



