id 
65. Telimena corticicola n. sp. 
On woody stems of Helichrysum sp., Alice, C.P., 18.11.17, Doidge [10975]. 
Stromata scattered irregularly on the greyish bark, minute, dull black, oval to narrow 
ellipsoid, 0°5 to 0°8 mm. long, somewhat convex, unilocular, or with few loculi sunken in the 
cortex, not erumpent. Loculi oval to flattened spherical, opening by an apical pore, 
300-340 vu diameter, 200-240 p high, fusing at the apex with the black, opaque, clypeus 
which is 18-20 u thick and extends beyond the apex of the loculus a distance of 300-400 u. 
The space between the clypeus and the upper part of the loculus 1s filled with a black opaque 
hyphal weft similar to that forming the clypeus, and from this a few dark hyphae run out 
into the substratum. The lower part of the locular wall consists of delicate, almost colour- 
less hyphae, which are strongly compressed laterally. Asci paraphysate, cylindrical, 
rounded at the apex, very briefly pedicellate, 80-110 20-23 u, rather thick walled. Spores 
distichous, colourless. cylindrical, rounded at both ends, four-celled, primary cross-wall 
in the centre, each of two primary cells being later divided in the centre by a secondary 
wall. Thick walled, wall about 2 » thick, outer edge smooth, inner curving inward to meet 
transverse walls and giving the spore the appearance of being constricted, 24-27 « 10-13 u. 
Telimena corticicola Doidge, nov. sp. 
Stromata sparsa, corticicola, atra, elliptica, 0°5-0°8 mm. longa, leniter convexa, 
loculos paucos includentia.  Loculi ovati v. suborbiculares, 800-400 u diametro, 200-240 u 
alti, clypeo opaco, i8-20 yw crasso. Asci paraphysati, cylindracei, apice rotundatae, 
brevissime pedicellati, 80-110 ~« 20-23 yu. Sporae distichae, hyalinae, cylindraceae, 
utrinque rotundatae, 3-septatae, 24-27 « 10-13 u. 
Hab. in corticis Helichrysi sp., Alice, C.P., 18.11.17, leg. Doidge [10975]. 
66 Systremma Pterocarpi n. sp. 
On leaves and twigs of Pterocarpus ceriseus, Khami Ruins, Rhodesia, 14.7.20, 
Bottomley [14101]. 
Leaf stromata epiphyllous, rarely hypophyllous, scattered, situated on yellowish leaf 
spots, dull black, round or ellipsoid, 1-15 mm. diameter, 450-600 u high, usually with 
a concentric zone of secondary stromata with a radius of about 1 mm. from centre of primary 
stroma. Stromata on twigs and midribs of leaves similar, but usually oval to ellipsoid, 
somewhat larger and without secondary stromata. 
The stromata arise between the epidermis and the palisade cells, the cuticle becomes 
arched, and a dark-brown epidermal clypeus is formed. The base is also composed of 
small dark cells, and rests on the palisade cells, but the central part of the stroma is formed 
of paler, more delicate tissue in which are produced one large and a number of smaller conidia! 
loculi more or less spherical but irregular in size. The conidia are round, oval, pyriform, 
somewhat angular, brown, and 2-7 » diameter. The conidial stroma attains a height of 
150-250 u, and does not rupture the cuticle. The ascostroma arises from beneath the 
conidial stroma, and is similar to it in structure, the latter is pushed up and the cuticle 
ruptured, its dark base forming the covering layer of the ascostroma. Loculi few, sphericai 
to ellipsoid, or pyriform, 120-200 u diameter. Asci numerous aparaphysate, eight-spored, 
thin-walled, evanescent, oblong-cylindrical, about 70 x 10 4. Spores mono-half distichous, 
two-celled, brown, cylindrical, with blunt ends, slightly constricted, 10-13°3 « 5-6°3 u, 
upper loculus 6-8°6 u, lower 3°3-5 u long. 
Systremma Pterocarpi Doidge, nov. sp. 
Stromata epiphylla, rartus hypophylla, maculis flavidulis insidentia, atra, orbicularia 
y. elliptica, 1-1°5 mm. diametro, 450-600 u alta, subepidermalia. Loculi pauci, orbiculares, 
elliptici v. pyriformi, 120-200 u diametro. Asci numerosi, aparaphysati, octospori, oblongi 
v. cylindracei, 70 x 10 u. Sporae monostichae v. subdistichae, 1-septatae, brunneae, 
cylindracei, utrinque subtruncatae, leniter constrictae, 10-13°3 x 5-6°3 1; loculo supero 
majore 6-8°6 u longo, infero 3°3-5 u longo. 
Hab. in foliis caulisque Pterocarpi cerisei, Khami Ruins, Rhodesia, 14.7.20, leg. 
Bottomley [14101 .. a 
