40 FUNGUS-FLORA 



elliptical, 30-35 X 20, often slightly constricted at the basal 

 HI ptum, contents granular, somewhat orange-colour. 



Mycogone anceps, Sacc., Mich., ii. p. 372 ; Sacc., Syll., 

 n. 902. 



On dung, human and other. 



Chlamydosporous condition of Pilobolus oedipus. 



DIDYMAEIA. Corda. (fig. 17, p. 274.) 



Parasitic. Hypjiae subsimple, erect, gregarious, bearing 

 a single two-celled, colourless conidium at the tip. 



Didymaria, Corda, Ic. Fung., vi. p. 8 ; Sacc., Syll., iv. 

 p. 184. 



Didymaria Ungeri. Corda. (fig. 17, p. 274.) 

 Forming subcircular oohraceous spots that become pale 

 with age ; tufts white, minute, hypophyllous ; fertile hyphae 

 erect, fasciculate, slender, unbranched, without septa, 50-60 

 X 3-4 p., bearing at the tip a single obovate-elliptic, colour- 

 less, 1 -septate conidium scarcely or not all constricted at 

 Ihe septum, 20-25 X 7-10 p.. 



Didymaria Ungeri, Corda, Anleit., t. B., f. 9. I.; Sacc., 

 Syll., iv. n. 904. 



On the under surface of living leaves of Eanunculus 

 rcprns. 



BOSTKICHONEMA. Cesati. (fig. 18, p. 274.) 



Parasitic. Hyphae erect, unbranched, spirally waved, 

 without septa, colourless. Conidia elliptic or oblong, 

 wo-celled, hyaline. 



BostricJtonema, Cesati, Erb. Critt. Ital., n. 149; Sacc., 

 Syll.. iv. p. 185. 



Distinguished from Didymaria by the wavy or spirally 

 curved fertile hyphae. 



Bostrichonema alpestre. Ces. (fig. 18, p. 274.) 

 Spots subcircular, ochraceous-brown ; fertile hyphae 

 forming white tuffs on the under surface of the leaf, 

 spirally waved, 130-140 X 4-6 p., sparingly septate, not 



