South African Microthyriaceae. 
253 
On leaves of Uhamnus i^rinoides, Brander's High Forest, Victoria East, 
12/8/15, V. d. Bijl, 9463; on the same leaves as A. rliamnicola. 
12. Asterina delicata Doidge, sp. nov. 
Plate XIV, fig. 14. Slide XXXI, 10. 
Epiphyllous, effuse, forming thin blachish spots up to 8 mm. diam. 
Mycelium spreading, delicate; hyphae slender, light brown, 3-3-5 /x thick, 
■cells 20-24 ft long, branching irregular ; liyphopodia alternate, 1 -celled, 
asymmetrical, usually angular or sub-lobed, 6-7 [x high by 6-10 /x broad. 
Tbyriothecia gregarious or scattered, flattened-hemisplierical, 100-130 [i 
diam., composed of radiating hyphae 3 /x thick, cells almost cubical, 3-3'5 /x 
long: margin not markedly fimbriate; dehiscence at first by a central pore, 
then irregular. Asci aparaphysate, sessile, ovate or spherical, 26-33 x 
-33-40 /X. Spores conglobate, light brown, 1-septate, constricted, broadly 
rounded at both ends, 20-22 x 10-12 /x, cells sub-equal, or upper loculus 
■slightly broader. Pycnidia similar to the thyriothecia but smaller, 70-100 /x 
diam. Conidia dark brown, continuous, elliptical to ovate, 20-22 x 12-15 /x. 
On leaves of Trimeria alnifolia, Mayville, Durban, 22/7/15, Wood, 9062. 
10. Asterina Grewiae Cke. 
G-revillea, x, p. 130 ; Ann. Myc. x, p. 189 ; Die G-attuug Asterina, p. 76. 
Plate XIV, fig. 15. Shdes XXVI, 13 ; XXIX, 13 ; XXXIII, 1. 
Amphigenous, mostly epiphyllous ; mycelium effuse, delicate, irregula^rly 
branched, and anastomosing to form a network ; hyphae slender, light 
brown, 3*5-4 /x thick, undulating ; cells 15-20 /x long ; hyphopodia alternate, 
unilateral or occasionally opposite, 1 -celled, finger or flask-shaped, sometimes 
sub-lobed, 8-10 X 3*5-4 /x. Thyriothecia numerous , flattened-hemisplierical, 
100-130 /X diam., formed of radiating hyphae about 3 /x thick, with cells 
3-5 /X long ; margin not fimbriate ; dehiscence by an irregular-stellate 
fissure. Asci aparaphysate, 8-spored, spherical, 20-24 /x diam. Spores con- 
globate, brown, 1-septate, smooth, constricted, 20-22 x 10-12 jj-, upper 
loculus broader and almost splierical. Pycnidia similar to the thyriothecia 
but smaller, 50-65 /x diam. ; conidia continuous, ovate-elliptical, rounded at 
both ends, 18-20 x 11-13 /x, brown without medial band. 
On leaves of Grewia lasiocarpa, Inanda, Natal, 1879, Wood (Wood, 639) ; 
Kentani, 25/8/17, Pegler (Pegler, 2436), 10993; Woodville Forest, George, 
11/11/17, Doidge, 11018. 
11. Asterina Trichiliae Doidge, sp. nov. 
Plate XIV, fig. 16. Slides XXXIV, 11 ; XLVII, 11. 
Epiphyllous, forming thin, scattered, sub-circular spots up to 6 mm. 
diam. Hypliae brown, straight, 4-6 /x thick, branches opposite, anastomos- 
ing, often at right angles to the hyphae ; hyphopodia frequently opposite, 
