320 THE JOURNAL OF BOTANY 



found. It is said that sometimes the pycnospores and the ascospores 

 may be seen on the same disc. 



289. Sporonema strobilinum Desm. var. accedens Sace. Sjll. 

 iii. 679. 



Pycnidia minute (up to 250 /x diam.), gregarious, subglobose, 

 erumpent, black, fragile, soon vanishing above and leaving an exci- 

 puliform disc which is surrounded by the lacinise of the epidermis, 

 sometimes confluent ; disc black when dry, but when moist swollen 

 and opalescent-grey from the mass of spores. Spores cylindric-oblong, 

 rounded at each end, rarely subf usoid or subclavate, about 7-8 x l|-2 yu, 

 rather variable; sporophores crowded, long (up to 20^), straight, 

 filifoi'm, simple or occasionally branched. (Tab. 550. f. 8 a.) 



On the apophysis of the cone-scales of Pinus sylvestris. Wood 

 End, Tanworth-in-Arden (Dr. Bayliss Elhott). June. 



When kept moist, the spores ooze out in a coarse tendril or a 

 shapeless grey mass. On account of the vast number of spores, there 

 is reason to believe that the same sporophore can continue to produce 

 fresh ones after the first has fallen off. In the typical form the 

 spores become idtimately pseudo-uniseptate, but no trace of this 

 could be seen in the variety, the spores of which are really very dif- 

 ferent in shape from those of the type, although in other respects the 

 two plants are similar. 



290. GrLffiOSPOBiUM RoBERGEi Desm. in Ann. Sci. Nat. 1853, 

 XX. 214. Sacc. Syll. iii. 712 ; Fung. Ital. pi. 1019. 



Spots sinuous or roundish, pale-umber, subochraceous in the centre, 

 without any distinct border line, 3-5 mm. across. Pustules hypo- 

 phyllous, subcuticular, situated chiefly on the paler part of the spot, 

 rather crowded, 100-125 fi diam., blackish, prominent, surrovmded at 

 length by the lacinise of the cuticle. Conidia oval or obovoid, rounded 

 at both ends, guttulate and granular within, at length appearing 

 thick- walled, 13-15 x 7-8 /x; sporophores short. 



On fading leaves of Carpinus Betulus. Stewarton, A^a'shire 

 (Boyd). July. 



The pustules are not covered by the epidermis, but only by the 

 cuticle, which is darkened in colour and at length punctuated by the 

 pressure of the apex of the spores. 



291. Gloeosporium salsum, sp. n. 



Maculis nullis v. obsoletis. Acervulis amphigenis, sparsis, melleis, 

 dein nigrescentibus, prominulis, usque 150^ diam. Conidiis copio- 

 sissimis, elliptico-oblongis, utrinque rotundatis, saepe biguttulatis, 

 subinde curvulis, coacervatis dilute roseolis, 3-5 x 1-li /a. 



Hab. in foliis vivis Gochlearice officinalis, West Kilbride, Ayr- 

 shire (Boyd). Oct. 



The spores at length ooze out and form little pallid-rosy masses 

 above the opening of the pustule. 



292. Mtxosporium carneum Lib. exs. no. 882. Sacc. Syll. iii. 

 726 ; Fung. Ital. t. 1076. 



Pustules covered by the periderm, then erumpent, pulvinato, 

 somewhat rose-coloured, rather large, at length surrounded by the 



