Rev. M. J. Berkeley on British Fungi. 



437 



*240. B. terrestris, Pers., Myc. Eur. 1. p. 38. Stachyli- 

 dium terrestre, Fr. Syst. Myc. vol. iii. p. 391. The sporidia 

 are seated singly on the tips of the ramuli, the plant therefore 

 is not a true Stachylidium. 



Tab. XIV. fig. 24. B. terrestris, highly magnified. 



241. Penicillium subtile, n. s. Minutissiinum, 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. 



Tab. 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 Sphceria. 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. 



Tab. XIV. fig. 26. a, tuft of D. obovatum, magnified; b, flocci and spo- 

 ridia; c, sporidia. Both more or less highly magnified. 



243. Dactylium sphcerocephalum, n. s. Album ; hyphas- 

 mate tenui, clecumbente ; floccis fertilibus erectis, supra plus 

 minus ternatis; capitulis subglobosis 10 — 12 sporis ; sporidiis 

 oblongis brevissime 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, branched, articulated ; 

 fertile flocci erect, articulated, naked below, above branched 

 in a more or less ternate manner ; branchlets slightly swollen 



