81 
Mycelium reticulate: hyphae dark-brown, semi-opaque, 6-7 u thick, cells mostly 
18-20 u long, branches opposite, anastomosing, capitate hyphopodia alternate, usually 
one to each. cell, stipitate, 17-26 u high, terminal cell variously lobed with rounded or 
truncate lobes 17-20 u broad. Mucronate hyphopodia rather numerous, interspersed 
with the capitate hyphopodia, opposite, alternate or unilateral: they are rather peculiar 
in form, reminding one of penguins at rest, 17-20 u long and 5-6 u thick at the base ; 
mycelial setae none. 
Perithecia spherical, black, carbonaceous, 140-200 u diameter, surface cells conical or 
rounded, projecting to a height of 16-18 u. (These could hardly be termed appendages ; 
and the species is accordingly assigned to the genus Irene.) Asci fugaceous, not seen. 
Spores four-septate, cylindrical, rounded at both ends, constricted, 40-46 x 16°5-21°5 u. 
Irene Rinoreae Doidge, nov. sp. 
Amphigena, plagulas minutas, atras, 1-2 mm. diametro efformans. Mycelio reticulato. 
Hyphis brunneis, subopacis, 6—7 u cragsis, cellulis plerumque 18-20 u longis, hyphopodiis 
capitatis alternis, stipitatis 17-26 u altis, cellula superiore varie lobata, lobis rotundatis 
v. truncatis. Hyphopodiis mucronatis numerosis, oppositis, alternis v. unilateralibus, 
17-20 uv longis, basi 5-6 u crassis. 
Setis mycelicis nullis. Perithectis globosis atris, tuberculatis, 140-200 uv. diametro. 
Ascis non visis. Sporidiis 4-septatis, cylindricis, utrinque rotundatis, ad septa constrictis, 
40-46 x 16°5-21°5 wp. 
Hab. in folus Rinoreae ardesiaeflorae, Karkloof, Natal, 14.7.21, leg. Doidge [14961]. 
84. Phyllachora myrsinicola n. sp. 
On leaves of Myrsine melamophleos, Duncairn, near Maritzburg, 13.7.21, Doidge 
[15015]. 
Stromata epiphyllous, net visible on lower surface of leaf, and not surrounded by 
discoloured leaf tissue, scattered, 4-1 mm. diameter, black, somewhat shiny, flat, very 
slightly raised above the epidermis. 
Several loculi in each stroma, occupving about half the thickness of the leaf, which 
is here swollen to about twice its normal thickness. Loculi covered by a common epidermal 
clypeus which is black, opaque, and variable in thickness. Loculi not closely crowded, 
subspherical, 180-240 vy. diameter, lateral and basal walls well developed, consisting of 
laterally compressed hvphae, usually hyaline, but sometimes brown at the base and where 
the lateral walls join the clypeus. Asci clavate 80-100 x 20-27 u, thick-walled, rounded 
at the apex, eisht- spored, paraphys sate, briefly pedicellate. Spores distichous, one-celled, 
hyaline, ellipsoid or rhomboid-elli psoid, 16°5-23°5 x 9-10 w. 
Phyllachora myrsinicola Doidge, nov. sp. 
Stromata epiphylla, atra, in inferiore foliorum pagina non visibilia, sparsa, 3-1 mm. 
diametro parum nitidula, loculi pauci in quoque stromate, suborbiculares, 180-240 u 
diametro, clypeo epidermale atro, opaco. Asci paraphysati, clavati, octospori, breviter 
pedicellati, 80-100 x 20-27 uw. Sporae distichae, continuae, hyalinae, ellipsoidae v. sub- 
rhomboidae, 17°5-23°5 x 9-10 U. 
Hab. in folis Myrsine melanophlecs, Duncairn, near Maritzburg, Natal, 13.7.21, 
leg. Doidge [15015]. 
&5. Clypeosphaeria natalensis n. sp. 
On leaves of Viscum nervosum growing on Rapanea melanophleos, Glen Burnie, Highflats, 
Txopo District. Natal, 20.8.21, J. W. Bews [14867 ]. 
Penthecia and pycnidia epiphyllous, in scattered groups, similar in form and size, 
immersed, lenticular, spherical. convex at the apex with a black, opaque epidermal clypeus ; 
160-200 vy. in diameter, very slightly papillate in the centre, where it becomes perforated 
by a pore ; wall black, carbonaccous, 16-20 p thick, 
