Notices of British Fungi. 47 
Wittering, Northamptonshire. The state hitherto described as Bri- 
tish is the purple-violet variety. Sporidia subelliptic. 
]4. Sclerotium medullare, n. s. Berk. Brit. Fung. Fasc. 2. ined. 
At King's Cliffe, in the inside of stems of Pteris aquilina, which had 
been rotting from the previous summer, in a heap by the borders of 
a wood in an exposed situation. I found it only in one spot, but 
after a diligent search obtained a tolerable supply of specimens. At 
first entirely inclosed in the soft contents of the stem, subglobose, 
or more generally oblong, brown, then black, even, black within, with 
a slight shade of olive ; as it swells the stem is generally split, and 
occasionally it protrudes and assumes a more or less sinuous form. 
When dry it is irregularly and coarsely corrugated, whitish within ; 
the dark colour of the flesh is, however, restored after it has been 
for some time immersed in water. Outer skin, when viewed by 
transmitted light with a high magnifier, composed, as in Sclerotium 
durum, of roundish irregular cells. 
Tab. III. Fig. 5. a. Sclerotium medullare, nat. size ; b. do. magnified ; c. do. 
do. when dry ; d. a slice of the fresh plant ; e. a thin slice of the outer 
coat ; /. a slice of the dried plant ; d. e.f. all highly magnified. 
* 15. Polyangium vitellinum, Lk. Fr. Syst. Myc. vol. ii. p. 305.. 
On loose stumps in a wood at King's Cliffe. My specimens exactly 
agree with the figure of Ditmar. Occasionally the sporangia vary a 
little from the usual oblong ovate form, in consequence of mutual 
pressure towards the centre of the uterus. 
* 16. Sphceria rubiginosa, Pers. Fr. Scler. Suec. n. 142. This 
species, introduced on the authority of a single specimen from Cap- 
tain Carmichael, is not uncommon, on fallen decorticated branches of 
service and crab in Rockingham Forest. 
* 17. S.favacea, Fr. Scler. Suec. n. 306. On birch, Wittering, 
Northamptonshire. 
18. S. detrusa, Fr. Scler. Suec. n. 6. On barberry, Wansford, 
Northamptonshire. 
19. S. velata, Fr. Scler. Suec. n. 225 On lime, King's Cliffe. 
20. S.microstoma, Pers. Fr. Scler. Suec n. 185. On blackthorn, 
Apethorpe, Northamptonshire. 
* 21. S. hypodermia, Fr. Scler. Suec. n. 32. On elm, common. 
22. S. xanthostroma, Mont. Fr. Scler. Suec. n. 444. On a stick 
used as a marker in a garden at King's Cliffe, but not completely 
developed. 
23. S. pantherina, Berk. Brit. Fung. Fasc. 1. On Pteris aqui- 
lina, King's Cliffe, &c. 
24. S. decedens, Fr. Scler. Suec. n. 81. On hazel, common. 
