242 Transactions of the Royal Society of South Africa. 
Seynesia orbiculata Syd. 
Ann. Myc. x (1912), p. 39. 
Thyriothecia epiphyllous, gregarious, always forming orbicular groups 
4-8 mm. diam., very closely packed, opaque, formed of radiating hyphse, 
mostly hemispherical, 90-175 /x diam., less frequently somewhat elongated 
or irregular, in which case they are longer. No free mycelium. Asci ovate 
to clavate, thickened at the apex, 35-60 x 16-25 /x, 8-spored. Spores 
distichous or conglobate, ellipsoid, rounded at both ends, 1 -septate, con- 
stricted, smooth, brown, 13-18 x 6-8 fx, cells equal. 
On leaves of Euclea sp., Letaba Drift, Zoutpansberg Dist., 6/8/11, Doidge, 
1808. 
MOEENOINA Th. 
Ann. Myc. xi (1913), p. 434. 
Free mycelium wanting ; thyriothecia linear to oblong, inverse, radial- 
prosenchymatous in structure, asci aparaphysate, spores 2-celled, brown. 
Morenoina africana Doidge sp. no v. 
Plate XVIII, fig. 41. Slides XLIV, 15, 16. 
Epiphyllous ; mycelium none, or represented by a few pale, poorly 
developed hyphse. Thyriothecia scattered or confluent in small groups, 
linear-ellipsoid, 120-400 X 65-100 /x, straight or slightly curved, less fre- 
quently somewhat sinuous or forked, dehiscing by a longitudinal slit almost 
the length of thyriothecium ; radiating hyphse 2*5-3 /x thick, cells 
almost cubical ; margin fimbriate. Asci (immature) aparaphysate, ellip- 
soid-clavate, briefly pedicellate, 23-27 x 10-12 /x, not staining blue with, 
iodine. Mature spores only seen outside the ascus, fuscous, 2-celled, 
scarcely constricted, smooth, 12-14 x 5-6*5 /x, cells equal. 
On pinnules of Dryoj^teris inaeq^ialis, Zwartkop, Natal, 19/7/18, Doidge, 
11605. 
Englerulaster von H5hn. 
Fragm. z. Myk., Bd. x, Nr. 520. 
Mycelium superficial, branched, septate, with regular hyphopodia. 
Thyriothecia hemispherical or almost spherical, inverse, radial-prosenchy- 
matous ; at maturity the thyriothecial membrane breaks down from the 
centre, falling apart into separate cells, with abundant formation of mucila- 
ginous matter. Ascospores brown, 2-celled. 
Key to the Species. 
A. Spores not more than 30 /x long. 
a. Thyriothecia 90-110 /X diam. . . . . 1. E. Gymnosporiae. 
h. Thyriothecia 160-190 fx diam. . . . 2. E. Popowiae. 
B. Spores 33-36 /x long S. E. orbicularis. 
