South African Microthyriaceae. 
245- 
2. Parasterina brachystoma (Eehm.) Th. 
Die Gattung Asterina, p. 49. 
Seynesia brachystoma Eehm., Hedwigia, 1898, p. 325 ; Syll. Fung, xvi, 
p. 641, on leaves of a tree, Serra do mar, Central Brazil ; Ule 569 
Herb. Pazschke and Berlin, on Myrtaceae leaves, Ule 1238 ; Herb. 
Berlin sub Seynesia colliculosa Eehm. 
Asterina multiplex Eehm., Ascom. 1706. On living leaves of Styrax 
leprosum, Sao Leopoldo, Eio Grande do Sul, South Brazil; 
Theissen, Decades F. Bras. 59. 
Asterina megalosperma Speg. in herb; on leaves of Styrax?, Ipiranga. 
no. 16. 
Also Ule 1143, Herbar. Pazschke, on an Anonaceae sub Asterina 
Paraguay ensis. 
Plate XIII, fig. 4. Slides XXVI, 16 ; III, 7-9 : XXXV, 11. 
^ Epiphyllous, forming black, carbonaceous spots, round to irregular, up 
to 10 mm. diam. Mycelium radiating, branching alternately and anasto- 
mosing to form a network ; hyphae straight, brown, 6-8 /x thick, frequently 
septate, cells 10-16 /x long, walls often oblique ; hyphopodia alternate, 
sessile, continuous, very briefly cylindrical or subglobose, 7-11 x 6-10 ii. 
Thyriothecia hemispherical, gregarious, 280-400 /x diam., consisting of 
straight, brown hyphae about 3 /x thick, cells almost cubical ; dehiscence 
stellate ; margin dentato-crenulate, certain stout hyphae running out into 
the mycelium. Asci paraphysate, broadly ovate, sessile, thickened at the 
apex, about 55 x 45 fji., 8-spored ; paraphyses filiform, swollen at the tips, 
which become conglutinate. Spores conglobate, brown, smooth, oblong, 
2-celled, slightly constricted, rounded at both ends, 30-35 x 14-17 /x 
(Tliiessen makes the spores 33-37 /x long), cells equal in length, but the 
upper loculus somewhat broader. 
On leaves of Eugenia Zeyheri, Woodbush, Zoutpansberg, 3/8/11, Doidge, 
1759; March, 1910, Gray, 888. 
On Eugenia Gerrardi, Buccleuch, Natal, 23/3/16, Doidge, 9723 ; 20/4/16, 
J. M. Sim, 10141. 
On shrub undetermined (Myrtaceae ?), Zwartkop, Natal, 19/7/18, Doidge, 
11597. 
var. Laxa Doidge, var nov. 
Slides XXVI, 17, 18 ; XXXIX, 7. 
Mycelium more slender and more opaque than in the type ; hyphopodia 
more distant and slightly smaller. 
On leaves of Grumilea capensis, Woodbush, Zoutpansberg, 3/8/11^ 
Doidge, 1758. 
On Oxyanthus Gerrardi, Berea, Durban, 28/1/17, v. d. Bijl, 11017. 
On Oxyanthus natalensis, Berea, Durban, 28/1/18, v. d. Bijl, 11366. 
