Notices of British Fungi. 47 



Wittering, Northamptonshire. — The state hitherto described as Bri- 

 tish is the purple-violet variety. Sporidia subelliptic. 



14. 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. «. 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. Splioeria 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. 



