9) 
The South African specimen differs slightly from the above description in that the 
mycelium is rather dense and copiously branched and anastomosing; the cells of the 
hyphae are rather short, 13-16 u long. [Fig. 5.] 
73. Irene Zeyheri n. sp. 
Amphigenous, forming thin black spots 2-4 mm. diameter, or larger areas by confluence ; 
mycelium not dense, forming an irregular network; branches opposite or irregular, 
anastomosing. Hyphae straight or somewhat sinuous, 6-6°5 yp thick ; cells 20-30 u long; 
capitate hyphopodia alternate, 18-23 u long, terminal cell very variable in form, lobed in 
various ways, 6-14 vy. broad at apex ; mucronate hyphopodia opposite or unilateral, inter- 
spersed with the capitate hyphopodia; ampulliform 16-20 x 6-7 u. Mycelial setae 
none. Perithecia scattered, spherical, black, carbonaceous, 190-220 u diameter, surface 
cells convex. Asci two-spored, evanescent, spores oblong, brown, four-septate, slightly 
‘constricted, rounded at both ends, 39-44 x 16-18 uy, 
n 
Ah 
j) 
ET ; 
Fig.5 
On leaves of Eugenia Zeyher, Howiesons Poort, 12.7.17, Doidge [12388]; Pirie 
Forest, 8.7.19, Doidge [12272]; Van Stadens Pass, 13.11.17, Doidge [10878]. 
Irene Leyheri Doidge, n. sp. 
Amphigena, maculas, tenues, atras formans. Mycelium effusum, hyphis rectis v. 
leniter sinuosis, 6-6°5 vu crassis, ramis oppositis v. irregularibus, anastomosantibus ; hypho- 
podiis capitatis alternis, 18-23 » longis, cellula superiore varia, lobata, apice 6—14 u lata ; 
hyphopodiis mucronatis oppositis v. unilateralibus, ampullaceis 16-20 x 6-7 uw: setis 
mycelicis nullis. Perithevia sparsa, globosa, atra, 190-220 ru diametro. Asci bispori. 
Sporae oblongae, brunneae, 4-septatae, leniter constrictae, utrinque rotundatae, 
39-44 X 16-18 u. 
