South African Microthyriaceae. 263 
Pjcnidia similar to the tliyriothecia but smaller ; conidia elliptic-pyriform, 
brown, with or without a hyaline band, 15-22 x 9-11 /x. 
On leaves of Loraniliiis sp., Quelimane, Portuguese East Africa, 14/9/17, 
Pole Evans, 7385. 
On leaves of Loranthus Dregei, 8/3/15, Pegler (Pegler, 2302), 8863. 
28. Asterina clausenicola Doidge, sp. nov. 
Plate XYI, fig. 33. Slides YI, 16, 17 ; XLY, 7. 
Amphigenous, mostly epiphyllous, effuse, forming a thin, spreading, 
carbonaceous layer frequently almost covering the upper surface of the 
leaf. Mycelium delicate, consisting of pale-fuscous hyphae 3-3*5 /x thick, 
undulating, frequently branching and anastomosing, hyphopodia alternate 
or unilateral, occasionally opposite, sessile, 1-celled, 6-7 /x high and 9-10 /x 
broad, deeply 3-5-lobed, each lobe flattened or bilobulate, narrowing suddenly 
into a base 3-3*5 /x thiclc. Thyriothecia scattered, flattened-hemisplierical, 
110-140 fx diam., formed of radiating hyphae 2*5-3 /x thick, with cells 
3-3*5 [JL long ; dehiscing by a stellate fissure ; margin fimbriate. Asci 
aparaphysate, 8-spored, broadly ovate or spherical, sessile, broadly rounded 
and thickened at the apex, 27-30 x 23-24 fx. Spores conglobate, fuscous, 
smooth, 1-septate, slightly constricted, 19-20 x 6*5-8 ft, upper loculus 
usually slightly larger. Pycnidia very numerous, similar to the thyriothecia 
but smaller, 50-60 /x diam., conidia brown with a hyaline band, continuous, 
ovate to ellipsoid, 15-18 x 8*5-11*5 /x. 
On leaves of Clausena inaequalis, Hilton Eoad, Natal, 21/7/18, Doidge, 
11606. 
Asterostomella stage only : on Clausena inaequalis, Woodbush, Zoutpans- 
berg, 4/8/11, 1754; Buccleuch, Natal, 24/4/16, J. M. Sim, 10149. 
29. Asterina diplocarpa Cke. 
Grevillea, x (1882), p. 129 ; Syll. Fung, ix, p .381 ; Die Gattung Aster- 
ina, p. 106. 
On leaves of Sida cordifolia, Inanda, Natal, Herb. Kew, Wood, 601 ; 
on Sida carjmiifolia, Sao Leopoldo, Eio G-rande do Sul, Herb. 
Theissen; Decades F. Brasil, 54 sub A. lierajjinis ; Eick. F. austro- 
amer. 325 ; XJle 673 on Croton, Eio de Janeiro, Herb. Berlin and 
Pazschke sub A. ])eraffinis. 
Asterina similis Cke., Grrevillea x, p. 130; Syll. Fung. 1. cit., on Sida 
rhomhifolia, Inanda, Natal, Herb. Kew, Wood, 544, " socia 
A. diplocarjm.'" 
Asterina Sidae Earle, Plants of Porto Eico, 6333, on Sida sp., Porto 
Eico. 
Asterina Kwangensis P. Henn. in Herb. Berlm on an Asclepiadaceae,. 
Kwango, Congo. 
