210 FUNGI. [Tympanis, 



Syn. p. 631. Hook. Fl. Scot. 2. p, 32.— P. nigra, Bull t. 460. 

 f, I, 116. Moug. S)^ Nest, exs, n. 197. — P. polymorpha, With^ 

 V, 4. p. 312. Soiv. t. 428. P«r^ v. 2 S^- S. Ji. 1046. 



On old stumps and pollard trees, as ash, oak, beechj &c. Autumn 

 and winter. Not uncommon. — Tough, elastic, gelatinous, dark-brown 

 or chocolate, almost black, wrinkled and rough externally, disc some- 

 times lacLinose ; ston, in general blunt, almost obsolete. Sometimes 

 fasciculate and confluent. Asci long, obtuse, containing large elliptic 

 brown sporidia, each containing a sporidiolum. 



2. B. sarcoides, .Jacq. {flesh-like Bidgaria) ; csespitose poly- 

 morphous rather firm reddish-purple, externally somewhat veiny, 

 disc hollowed out. Fr. Si/st. 3Iyc. v. 2. ]). 168. — Lichen sar- 

 coides, Jacq. Misc. 2. /. 22. — Helv. sarcoides, Bolt. t. 101. /! 2. — 

 Fez. sarcoides, Pei's. Syn. p. 633. Grev. FL Ed. p. 423. — P, 

 tremelloides, Bull, t: 410. /. 1. Fr, amethystea, With. v. 4. 

 p. 72. 



On old stumps ; autumn and winter. Common. — This is confounded 

 by most of the earlier English writers on Fungi with Tremella sarcoides, 

 which some of its forn)s very strongly resemble, but it may be known 

 by its firmer substance, and the presence of asci, which produce elliptic 

 sporidia, each containing two globose sporidiola. 



31. DiTiOLA. Fr, Ditiola. 



Hymenium at leng-th plicate, deliquescent. Cup open. Veil 

 universal. Corky. — Name from dirrog, double, and io-jXog, down, 



]. Z>. radicdta, A. & S. {rooting Ditiola) ; disc nearly plane 

 golden-yellow, stem thick wliite villous rooting-. Fr. Syst. Myc. 

 V. 2. p). 170. Scler. Suec. ! n. 295. Loud. Hort. Brit, p, 455. 

 — Helotium radicatum, Alb. S) Schia. Cons. t. 8.f. 6. 



On barked pine-trees. — Inserted in Loudon's Hortus Britannicus, 



but whether on any other authority than the synonym of Fries (" P. 



Jibidce,\ixv. ex. A?igL'^) and the doubtful reference to Clavaria coccinea. 



Sow. (which is nothing more than Tubercularia vulgaris), I am unable 



to say. 



32. Tywpanis. Tode, Tympanis. 



Hymenium not persistent, but at length cracking and break- 

 ing up. Cup open. Veil partial. Between horny and coria- 

 ceous. — Named from r-oij.ita^o-), a drum. 



1. T. dlnea, Pers. {cdder Ty^npanis) ; somewhat stipitate 

 opaque umber-black, cup subfiexuous margined. Fr. Syst, 

 Myc. V. 2. p. 174 Fez. alnea, Pers. Syn. p. 673. 



On Alder. Appin, Captain Carmichael. — Minute, at first resembling 

 a caespitose SphariCi ; externally brownish. 



2. T.frdxini, Scliwein. {ash-tree Tymjmnis) ; nearly sessile 

 turbinato-truncate shining black, disc plane rugose margined. 

 Fr. Syst. Myc. v. 2. p. 174. 



On dry ash-branches. Winter and spring. Appin, Captain Car- 



