Pound: revision of mucoraceae. 101 



Hydrogera obliqua (Scopoli). O. Kuntze. 



Mucor ohliquus ^COP. E'lor. Carniol. 2: 494, 1772. 



Hydrogera crystalina Wiggers. 1780. 1. c. 



PUoholus crystaliniis Tode. 1784. 1. c. 



H. ohliqua OK. Eev. Gen. 2:855. 1891. 

 Sporangiophores arising singly from bladder like swellings 

 in the mycelium, 5-10 mm. long, the terminal swelling .85- 

 1 . 25 X 60-85 mm. ; sporangia plano-convex, resting on the side 

 of the terminal swelling, 300-400x100-150 mikrons; columella 

 conical; spores elliptical, 5-10x3-6 mikrons, colorless, but 

 greenish yellow in mass. 



On dung. Found also on moist earth in greenhouse, Lincoln. 



Hydrogera rorida (Bolton) OK. 



Mucor roridus Boltox. Hist. Fung:, -^i 168. 

 PUoholus roridus 'Pehsoo'H. Syn. Fung. 117. 1801. 

 H rorida OK. 1. c. 1891. 



Mycelial swellings pale yellow, hidden in the substratum, 

 usually with a sterile svvelling on each side; sporangiophores 

 arising singly from the swellings from which they are not 

 separated by a septum, erect, 1-2 cm. high, the terminal swel- 

 ling short ellipsoid, almost spherical, spjrangia compressed, 

 very small, blue black, about one-third as wide as the terminal 

 swelling of the sporangiophore; columella bluish black, round, 

 shallow, projecting but a short distance into the sporangium; 

 spores ellipsoid, 6-8x3-4 mikrons, colorless, pale yellow in 

 mass. 



On dung, 



Hydrogera oedipus (Montagne) OK. 



PUoholus oedipus Mont. Mem.Soc. Linn. Lyon. 1828, (ex. Grove,) 



H. oedipus OK. 1891. 1. c. 

 Mycelial swelling of two parts separated by a septum, the 

 upper part thick, projecting from th^ substratum and forming 

 the swollen base of the sporangiophore; sporangiophores 

 short (not to exceed 5 ram., usually 1-3 mm), erect, the terminal 

 swelling ovoid, 600-800x450-650 mikrons, contents of sporan- 

 giophore orange red; sporangia compressed, hemispherical, 

 almost as wide as the terminal swelling, black; columella conical, 

 obtuse, reaching almost or quite to the summit of the sporan- 

 gium; spores round, rather unequal 10 14 mikrons. orange, 

 with a thick exospore. 



On excrement of animals, on mud, on decaying algae. 



