South African Microthyriaceae. 
259 
opposite and anastomosing ; lijpliopodia sessile, broader than long, lobed, 
most frequently 2-3-lobed, 5-7 /x high and 6-10 fx broad. Thyriothecia 
opaque, densely crowded, flattened-liemispherical, 150-170 /x diani., with 
stellate dehiscence; or oblong, 190-200 x 140 /x, dehiscing by a lineal fissure. 
Asci cyhndrical-ovate, aparaphysate, 8-spored, 26-40 x 20-24 /x, slightly 
thickened round the apex. Spores conglobate, 1-septate, brown, slightly 
constricted, 16-20 x 67 /x, smooth, the upper loculus somewhat broader. 
Pycnidia similar to the thyriothecia but smaller, 65-120 fx diam. ; conidia 
brown with a hyaline band, continuous, ovate to pyriform, 16-21 x 6-10 /x. 
On leaves of Osyridicarpus natalensis, Tongaat, Natal, 12/9/13, v. d. Bijl, 
6949. 
Sub-genus II. Clypeolaster Th. 
Die Grattung Asterina, p. 6. 
Thyriothecia with basal membrane, asci aparaphysate. The basal 
membrane is a blue- grey or grey-green disk formed of radiating hypliae, 
and apparently reproduces the structure of the thyriotliecial membrane. 
A. Hyphopodia 2-celled. 
a. Stipe cell gibbous ..... 23. A. loera flins. 
h. Stipe cell cylindrical. 
1. Hyphopodia lobed, 9-14 /x high. 
i. Spores 16-18 /x long . . . 24. A. ceUidicoIa 
var. microsporia. 
ii. Spores 20-23 /X long . . . 25. A. vagaiis. 
2. Hyphopodia not lobed, 12-20 fx high . 26. A. spliaerasca. 
Hyphopodia 1-celled. 
a. Hyphopodia not lobed .... 27. A. loranthicola. 
h. Hyphopodia lobed. 
1. Spores smooth ..... 28. A. clausenicola. 
2. Spores verrucose. 
i. Spores 18-20 /X long . . . 29. A. diplocarpa. 
ii. Spores 15-18 /X long . . . 30. A. tertia \'dbV. 
africcma. 
23. Asterina peraiRnis Spe^ 
Fung. Puig. 355 ; Syll. Fung, ix, p. 392. 
On living leaves of an Asclepiadaceae, Apiahy, Sao Paulo ; Museo 
Nacional, Buenos Aires. On a similar host, Sao Leopoldo, Eio G-rande do 
Sul, Herb. Theissen. 
Asterina pseudopelUcidosaSpeg. \diV. peraffinis (Speg.) Th. Die Gattung 
Asterina, p. 104. 
Plate XYI, fig. 28. Slides VIII, 15, 20, 18, 19. 
Hypophyllous ; mycelium slender, undulating, densely reticulate ; hyphae 
