MR. F. CURREY ON THE FRUCTIFICATION OF COMPOUND SPHÆRLÆ. 271 
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79. S. (DIATRYPE) aspera, Fr. S. M. ii. p. 354. The only difference between the fructifi- 
cation of these plants and that of S. verrucæformis is that their sporidia are somewhat 
smaller and without nuclei, and their asci are clavate, not fusiform. 
80. 8. (DIATRYPE) stiema, Hoffm.; Fr. S. M. ii. p. 350. Tan. XLVI, fig. 82, sporidia, x 
81. 
82. 
83. 
84. 
85. 
86. 
450. Sporidia yellowish in the mass, almost eolourless when single, slightly curved, 
0:0004 inch long. 
S. (DIATRYPE) BULLATA, Ehr.; Fr. S. M. ii. p. 349. Sporidia just like those of 5. 
platystoma (see fig. 66), 00002 to 0:0003 inch long. 
S. UNDULATA, Pers.; Fr. S. M. ii. p. 350. Sporidia biseriate, yellowish, slightly 
curved, rounded at each end, 0:0004 inch long. The perithecia break through 
the bark in an undulating manner. The sporidia are just like those of Sphæria 
stigma (see fig. 82), of which this species is probably only a variety, as was long 
since remarked by Fries. 
S. (Hyrocrea) LENTA, Tode ; Fr. S. M. ii. p. 349. Ta». XLVI. fig. 83, ascus with spo- 
ridia, X 325. The fructification of this plant is precisely similar to that of S. rufa; 
and I would refer to the remarks appended to that plant. The square-shaped, irregu- 
lar, colourless sporidia, after escaping from the ascus, become round or nearly so, their 
average diameter being less than 0:0002 inch. I have retained the plant in this 
. division, as it is so arranged in the Herbarium, and by Fries in the ‘Syst. Myc.’ 
In the ‘Summa Veg. Scandinaviæ ” it is placed (strange to say) in the genus Diatrype ; 
according to the arrangement in that work, it ought certainly to be a Hypocrea. 
Div. 7. VERSATILES. 
S. (DrATRYPE) scABROSA. Dec.; Fr. S. M. ii. p. 860. Tas. XLVI. fig. 84, ascus with spo- 
ridia and free sporidia, x 450. Sporidix uniseriate, clear brown (one had a hyaline tip 
at each end), subcylindrical, rounded at each end, triseptate, slightly constrieted at the 
septa, 0:0006 inch long. In this specimen the perithecia are very slightly immersed, 
and look like large specimens of Sphæria pulvis-pyrius, which, although belonging 
to the Denudatæ, is often subcuticular in its growth. The fruit also is the same as 
in S. pulvis-pyrius, except as regards size. The plant, however, being marked 5. sca- 
brosa by Mr. Berkeley, I have described it as such, but with some doubt. i 
S. (DIATRYPE) PODOIDES, Pers. Syn. p. 22, excl. syn. Ta». XLVI. fig. 85, ascus with 
sporidia and free sporidia, x 225. Sporidia biseriate or crowded, clear, rather pale- 
brown, 7-septate, with a hyaline joint at each extremity, often slightly curved, 0:0024 
to 0003 inch long: Quite distinct from S. scabrosa, Dec., under which it was placed 
by Fries as a variety. id 
S. PODOIDES, var. LEVIS, does not differ from the above, as far as the fruit is concerned, 
but only in the smoothness of the tubercles, arising from the ostiola of the perithecia 
not penetrating the stroma. 
87. S. (DiarRYPE?) PETIGINOSA, Fr. in litt. Tas. XLVI. fig. 86, ascus with sporidia and 
88. S. (DIATRYPE) LEPROSA, 
free sporidia, x 450. Sporidia biseriate or crowded, yellowish, rounded at each end, 
narrow, slightly curved, 0-0004 to 0-0006 inch long. i: 
iron: Pers.; Fr. S. M. ii. p. 365. Tas, XLVI. fig. 87, ascus with 
