South African Perisjporiales. 
737 
curved, often falcate, opaque, 175-250 x 6-9 /x,, apex acute. Perithecia hidden 
among the numerous mycelial setae, globose, verrucose, black, 200-230 diam., 
asci 2-4-spored ; spores oblong, rounded at both ends, 4-septate, constricted, 
similar in colour to the hyphae, 38-48 x 16-20 /x. 
On leaves of Plectronia ventosa, Amanzimtoti, Natal, 10/7/11, E. M. 
Doidge (1577) ; Durban Beach, 2/7/11, I. B. Pole Evans (1591). 
On leaves of Favetta sp., Tongaat, Natal, 12/9/13, P. van der Bijli(6952). 
On leaves of Plectronia sp. (?), Winkle Spruit, Natal, 28/5/15, E. M. 
Doidge (9005) ; Springfield, Natal, 14/7/15, J. Medley Wood (9017). 
On leaves of shrub undetermined, Mayville, Natal, 22/7/15, J. Medley 
Wood (9030). 
Meliola arcuata Doidge. 
Forms small, velvety, irregular-orbicular colonies 1-2 mm. diam. Hyphae 
branched, sinuate, frequently septate, Yandyke brown (E. XXYIII), about 
lO'5-ll II thick, finally anastomosing. Capitate hyphopodia alternate, shortly 
stipitate, 20-29 x lO'5-ll /x; terminal cell irregularly ovoid, dentate or lobu- 
late. Mucronate hyphopodia scarce, opposite, 14-18 x 7-9-5;a. Mycelial setae 
numerous, simple, arcuate or sometimes almost straight, black, opaque, apex 
acute, of uneven thickness, 7-11 /x thick, 295-330 /x long. Perithecia hidden 
among the mycelial setae, black, granular, 115-150 fx diam. Asci 2-spored, 
evanescent. Spores ellipsoid-oblong, rounded at both ends, 4-septate, slightly 
constricted at the septa, 50-54 x 14-16 fx. 
On stems of Viscum sp., Kentani, 1/6/12 (2364), 4/8/14 (8389), (Pegler 
No. 1949). 
Meliola Woodiana Sacc. & Syd. 
Hedwigia, 1899, p. 132. 
Sacc. Syll. Fung, ix, p. 415. 
Hypophyllous, forming black, velvety sub-orbicular spots up to 4 mm. 
diam., frequently confluent. Perithecigerous mycelium radiating, branched, 
composed of hyphae, 8-9 /x, thick. Natal brown (E. XL), septate; cells 
18-25 /X long; branches not numerous, opposite. Capitate hyphopodia 
alternate, stipitate, 25-35 fx long, terminal cell ovate or slightly angular 
18-25 X 7-11 fi. Mucronate hyphopodia on separate short branches, not 
numerous, opposite, paler, with a short, rather thick neck, 11-18 /x long, 
mycelial setae most numerous near perithecia, simple, black, rigid, arcuate, 
tapering slightly to blunt, translucent apex, 300-400 x 9-11 fx. Perithecia 
black, globose, granulose, ca. 200 /x diam. Asci 2-3-spored. Spores oblong, 
obtuse at both ends, 4-septate, constricted 47-54 x 18 /x. Conidiiferous 
mycelium filiform, conidiophores sub-simple, ascending, black-fuliginous, 
above paler and nodulose, 300-350 x 7-8 /x. Conidia obclavate, 4-septate, 
52-55 X 9-11 /X, pale fuliginous. 
