Rey. M. J. Berkeley on British Fungi. 437 
*240. B. terrestris, Pers., Myc. Eur. 1. p. 38. Stachyli- 
dium terrestre, Fr. Syst. Myc. vol. ii. p. 391. The sporidia 
are seated singly on the tips of the ramuli, the plant therefore 
is not a true Stachylidium. 
Tas. XIV. fig. 24. B. terrestris, highly magnified, 
241. Penicillium subtile, n. s. Minutissimum, niveum ; 
hyphasmate serpente, tenuissimo; floccis fertilibus erectis, 
simplicibus vel ternatis ; catenis sporidiorum lato-ellipticorum 
paucis. Clothing the inside of an old willow. Tansor, Norths. 
Spring. 
Extremely minute and delicate, presenting to the naked 
eye nothing more than a white mealy bloom. Hyphasma 
creeping ; fertile threads mostly simple but sometimes ternate, 
giving off a few chains of rather large broadly elliptic sporidia, 
each furnished at either end with a little apiculus. 
_ Very distinct in the form and size of the sporidia from any 
with which it might be confounded. 
Tas. XIV. fig. 25. a, threads of P. subtile; b, two sporidia. Both more 
or less highly magnified. 
242. Dactylium obovatum, n. s. Candidum, pulvinulatum ; 
floccis tenuissimis simplicibus ; sporidiis obovatis apicalibus 
subbinis obovatis uniseptatis. On twigs of willow in a damp 
place. King’s Cliffe. Forming minute white tufts springing 
up about the ostiola of some Spheria. Flocci erect, simple, 
not articulated, at least as far as I have observed, bearing at 
their apices one or two broadly obovate uniseptate shortly pe- 
dicellate sporidia. 
This differs from Dactylium roseum (Trichothecium roseum, 
Auct.) in its sporidia not being constricted, and the absence of 
any tint of rose-colour. 
Trichothecium roseum is certainly a Dactylium. Nothing 
can be more unnatural than to make it a Puccinia, as Corda 
has done ; with which genus it has scarcely any affinity. 
Tas. XIV. fig. 26. a, tuft of D. obovatum, magnified ; 6, flocci and spo- 
ridia; ¢, sporidia. Both more or less highly magnified. 
243. Dactylium spherocephalum, n. s. Album; hyphas- 
mate tenui, decumbente ; floccis fertilibus erectis, supra plus 
minus ternatis ; capitulis subglobosis 10—12 sporis ; sporidiis 
oblongis brevissimé pedicellatis 3-septatis. On dead twigs of 
ivy. Lambley, Notts. 
Forming a thin white stratum, with the heads visible to the 
naked eye. Hyphasma decumbent, branclied, articulated ; 
fertile flocci erect, articulated, naked below, above branched 
in a more or less ternate manner ; branchlets slightly swollen 
