138 Transactions British Mycological Society. 
Nectria Tuberculariae Petch. 
A Nectria which does not appear to have been previously 
described has been found on Lepidosaphes sp., on orange, in 
Ceylon. It occurred in company with Nectria aurantucola B. 
and Br., Ophionectria coccicola E. and E., and Septobasidiuwm 
vameale (Berk.), on a tree which had been imported from West 
Australia five years before. 
The perithecia are situated on the scale, or on a thin, white, 
byssoid stroma, which envelops the scale and spreads out over 
the leaf. The entire stroma can readily be detached from the 
leaf, and then presents a smooth, white, under surface, as in 
Ophionectria coccicola. The margin of the stroma is fimbriate. 
The perithecia are scattered or clustered, up to 0-2 mm. dia- 
meter, globose, with a very minute, conical ostiolum, pale 
flesh-coloured, with a white pruina (Plate IV, fig. 8). The wall 
of the perithecium is obscurely parenchymatous, of small cells, 
and villous with short, spreading, hyaline hairs. The asci are 
cylindric, eight-spored, spores obliquely uniseriate, 50-62 x 6p, 
furnished with paraphyses which soon disappear. The asco- 
spores (Plate V, fig. 9) are oval, or oblong oval, one-septate, 
not constricted, hyaline, minutely warted, 6-9 x 4-5p. A 
number of globose spores, about 4m diameter, are present: 
these appear to be aborted ascospores, not part-spores. 
With these, on similar stromata, there occurs a Tubercularia 
conidial form. The sporodochia are variable. In the larger forms 
(Plate IV, figs. 5, 6) they are flattened pulvinate, compact, oval, 
or circular, up to Imm. long and 0-6 mm. broad, situated at 
the edge of the scale, and often confluent so as to hide it com- 
pletely. In other cases the stroma bears small scattered patches 
of conidia which are barely elevated. The sporodochia are at 
first pink, with a whitish margin, and minutely pruinose, but, 
when covered with the spores, they are uniformly pink, or in- 
clining to orange red when moist, waxy, without any evident 
margin. The byssoid stroma of the conidial stage usually spreads 
further over the leaf than that of the perithecial stage, and, at 
its outer edge, one often finds somewhat loose, pinkish tufts of 
hyphae which are evidently the early stages of other sporo- 
dochia. This running habit is especially well-marked, where the - 
Tubercularia is in company with a Septobasidium which has 
developed its bristles. The hyphae of the Tubercularia then 
ascend the bristles, and form minute pink sporodochia at the 
apices. The bases of the larger stromata are plectenchymatous. 
The conidiophores are branched at about one-third of their 
height, and the branches are clustered, about 30 high, 2p 
diameter below, tapering to the apex. The spores are cylindric 
