'268 
Transactions of the Royal Society of South Africa. 
Key to the Species. 
a. Spores 15-16 long . . . 
h. Spores 17-20 /x long. 
i. Tliyriothecia up to 800 ft long 
ii. Thyriothecia not more tlian 300 jx long 
1. L. natalensis. 
2. L. congesta. 
3. L. radiata. 
1. Lembosia natalensis Doidge, sp. nov. 
Plate XIX, fig. 44. Slide XXV, 13. 
Hypophyllous, effuse; hyphae fuscous, 3-3'5/x tliick, branching and 
anastomosing ; hyphopodia very rare, cylindrical or slightly curved, 6 x 3 /x. 
Thyriothecia scattered, elliptic, sometimes forked, 300-500 x 140-160 /w,, 
dehiscing by a narrow longitudinal slit. Asci paraphysate, 8-spored, 
ellipsoid to obovate, 30-34 x 20-24 /x. Spores conglobate, 2-celled, fuscous, 
ellipsoid, scarcely constricted, 15-16 x 6-7 fx. Pycnidia flattened-hemi- 
spherical, Asterina-like, 200-250 /x diam., composed of radiating hyphae 
about 2 /X thick, dehiscence stellate ; conidia hyaline, fusoid, 18-20 x S 5[x. 
On leaves of an undetermined shrub (Myrtaceae ?) , Krantzkloof, Natal, 
1/6/15, Doidge, 8984. 
2. Lembosia congesta Wint. 
Exot. Pilze in Flora, 1884, p. 9 ; Syll. Fung, ix, p. 1105 ; Hab. ad 
ramulcs juniores Carissae arduinae in Promontorio Bonae Spei, Afr. 
austr. (MacOwan). 
Plate XIX, fig. 45. Slides XXVIII, 11-13, 16. 
On the younger branches, or less frequently on the leaves ; thyriothecia 
closely packed, forming black, opaque, round irregular spots up to 4 mm. 
diam. Thyriothecia black, opaque, elongated linear, straight, curved or 
flexuous, 500-800 x 180-220 /x ; oval, attenuated to both ends, 280-340 x 
160-175 fx, or rarely almost hemispherical, 160-190 /x diam; dehiscing by a 
longitudinal slit. Asci oblong to clavate, attenuated into a short foot, 
8-spored, paraphysate 60-70 x 21-26 /x ; paraphyses filiform, often forked 
at the apex, tips more or less conglutinate. Spores conglobate or sub- 
distichous, oblong, 1-septate, constricted, fuscous when mature, 17-18 x 
7-9 fx. Mycelium on the leaves well developed, fuscous, undulating, 
abundantly branched, and anastomosing, with a few sessile, dark brown, 
hemispherical hyphopodia 6*5-8 x 6*5 /x, on the primary hyphae. Myce- 
lium on the branches not so well developed ; hyphae straighter, more 
slender, 3*5-5 /x thick, branches parallel, with occasional elongated reticula- 
tions. 
On Carissa arduina, Lemana, Zoutpansberg, 14/8/11, Doidge, 1786; 
Isipingo, Natal, 21/5/17, Doidge, 10155; G-rahamstown, 15/8/17, Grane, 
11369; Cango Valley, Oudtshoorn, 9/11/17, Doidge, 10898; Woodville 
Forest, George, 11/11/17, Doidge, 10929; Howieson's Poort, Grahamstown, 
