South African Microthyriaceae. 
261 
veiy slightly broader. Pjcnidia similar to the thyriothecia but smaller, 
70-100 yu diam., conidia brown with a medial hyaline band, continuous, oval 
to ovate, 14-20 x 8-10 fx. 
On leaves of Maerua sp., Stella Bush, Durban, 1/7/14, Franks, 8405 ; 
Amanzimtoti, Natal, 10/7/11, Doidge, 1683. 
On leaves of Maerua pedunculosa, Stella Bush, Durban, 7/4/18, 
Bottomley, 11376. 
On Oncoba Kraussiana, Stella Bush, Durban, 23/9/17, v. d. Bijl, 11361 ; 
8/4/18, Bottomley, 11382. 
Yar. microspora differs from the type, and also from var. Cap]jaridis 
(Asterina Capparidis Syd. et Butler, Ann. Myc. 1911, p. 390, on leaves of 
Gapparis, Madras, India; Butler, 1179, Herb. Sydow.) chiefly in the size of 
the spores and asci. Var. Capparidis differs from the type in the short 
cubical cells composing the thyriothecium, which are not so delicate as those 
of the type, and in the somewhat stouter mycelium, the hyphae being 
4*5-5-5 /X thick. The spores resemble those of the type. Var. microspora 
agrees very closely with the type in the form of the mycelium, but differs 
in the size of the asci and spores. 
25. Asterina ? vagans Speg. 
Fung. Gruar. no. 127 ; SylL Fang, ix, p. 390 ; Die G-attung Asterina, 
p. 95. 
PI. XVI, fig. 30. Slides XI, 10, 15 ; XLIV, 18. 
Epiphyllous, effuse ; hyphae radiating, brown, about 5 thick, branches 
distant, often opposite, cells usually 25-30 /x long ; hyphopodia alternate or 
unilateral, 9-14 x 8-11 /x, briefly stipitate, stipe cell 3*5-6 [x long, terminal 
cell asymmetrical, more or less hooked, most frequently unequally 2-lobed 
or 3-lobed. Thyriothecia scattered, flattened-hemispherical, 120-180 /x diam., 
margin fimbriate ; dehiscence by a stellate fissure ; composed of radiating 
hyphae 3-3"5 /x thick, central cells cubical, 3"5-4'5 /x long. Asci apara- 
physate, embedded in a dirty-yellow mass of mucilaginous matter, ovate, 
33-37 X 33-35 /x. Spores conglobate, brown, 2-celled, loculi sub-equal, 
slightly constricted, 20-26 x 10-13 ^a, verrucose when mature. Pycnidia 
50-60 /X diam. ; conidia brown with an obscure medial band, oval to pyriform, 
15-18 X 10-11 /X. 
On leaves of Riiiorea ardisiaeflora, Buccleuch, ISTatal, 20/5/15, Doidge, 
9704 ; 17/7/18, Doidge, 11581. 
This should perhaps be described as a variety of A. vagans, the hyphae 
composing the thyriothecium are somewhat more slender than the type, and 
the asci do not stain blue with iodine ; but my material of this species is 
very scanty, and I hesitate to describe it as a distinct variety until I have 
examined further collections. 
