240 FUNGUS-FLOEA 



elliptical, 30-35 x 20, often slightly constricted at the tasal 

 Kiptnm, contents granular, somewhat orange-colour. 



Mycogone ancepa, Sacc, Mich., ii. p. 372 ; Sacc, Sj'll., 

 n. 902. 



On dunjr, human and other. 



Chlamydosporous condition of Pilobolus oedipus. 



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



Parasitic. Hyphae suhsimple, erect, gregarious, hearing 

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



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

 p. 184. 



Didymaria Ungeri. Corda. (fi.g. 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 fiL, bearing at the tip a single obovate-elliptic, colour- 

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

 the septum, 20-26 X 7-10 jx. 



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

 Syll., iv. n. 904. 



On the under surface of living leaves of Ranunculus 

 rojpcns. 



BOSTEICHONEMA. Cesati. (fig. 18, p. 274.) ' 



Parasitic Hyphae erect, unbranched, spirally waved, 

 without septa, colourless. Conidia elliptic or oblong, 

 wo- celled, hyaline. 



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

 .Syll., iv. p. 185. 



Distinguished from Bidymaria by the wavy or spirally 

 curved fertile hyphae. 



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

 Spots subcircular, ochraceous-brown ; fertile hypliae 

 forming white tufts on the under surface of the lewf, 

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



