170 
but no spores could be foun 
Mycoth. Ven. no. 1523!, on leaves of ivy, has similar pycnidia; 
d. ; 
The description of the species is as follows :— 
uw 
5 «4; sporophores linear, obtuse, colourless, regular or flexuous, 
15-18 x 15-2°5 yp. 
On small dry dead stems of Hedera Helie, or rarely on the 
leaves. Common everywhere, if looked for. 
times under a low magnification the black mass of spores 
exactly simulates an ostiolate pycnidium; on the leaves it is 
smaller and rounder, and more like a Coniothyrium, but still 
without a true pycnidium, only a proliferous stratum. 
9. Melanconium Pandani, Lév. in Ann. Sci. Nat. 1845, iii. 
66; Sace. Syll. iii. 759; Fung. Ital. tab. 1077. 
ustules large, embedded in the bark, compound, tubercular, 
erumpent, black, rather thick, prominent, 1-3 mm. diam. or 
even more, often grouped in lines. Spores oblong-ellipsoid or 
somewhat ovoid, singly very pale-olive, dark-olive in mass, 5- 
ry 
minute guttules, involved in mucilage, oozing out in the form of 
tendrils which ultimately blacken the surface of the bark; sporo- 
phores very long, colourless, flexuose, branched. 
On living bark of cultivated Pandanus, in Botanic Gardens, 
Kew, Dublin, ete. It is recorded on the Continent on the leaves 
Iso; it eauses a disease which, if neglected, spreads rapidly, and 
soon kills the plants. 
§ 2. LAMPROCONIUM. 
_..10. Melanconium Desmazierii, Sacc. in Mich. ii. 355; Syll. 
1, 751; Fung. Ital. tab. 1083 
Discella Desmazierii, B. et Br. Ann. Nat. Hist. 1850, v. 377, 
tab.-12, £. 8 a, b, c. 
Discula Desmazierii, Faun. et Flor. Kew, p. 172. 
Epidochium Maertensii, Westd. no. 1078. 
Pustules crowded, hidden under the bark, round, depressed, 
occasionally umbonate in the centre, without a pycnidium, not 
or 
scarcely erumpent, black, 4-1 mm Spores fusoid, obtuse 
at the ends, especially above, with a conspicious thic Il, at 
a 
: be no more suitable position for it than as a 
section of that genus. ‘The colour of the spores can attain to a 
deep sea-blue; the pyenidium attributed to it by Berkeley seems 
to me to be non-existent. 
