NEW OR NOTEWORTHY FXTNGI 319 



only two leaflets could be found on which pA'cnidia occurred ; round 

 Birmingham tlie spots can be found (recognisable by their bright 

 orange-brown border), but no pycnidia have yet been seen. 



286. Leptothteiijm Hedee^ Starb. Stud, p. 96. Sacc. Syll. 

 xi. 554. 



Sphceria (^Dotliideci) Hederce Moug. in Fr. Syst. Myc. ii. 564. 

 Sacc. Syll. ii. 436. 



Pycnidia subcuticular, amphigenous, but mainly epiphjdlous, 

 scattered, roundish, flat, then convex, at length ragose and somewhat 

 collapsed, smooth, shining, black, about 120-200 ^x diam., opening by 

 a central pore. Spores cylindrical, straight, 2-2|x|-lyu; sporo- 

 phores linear filiform, longer than the spores. (Tab. 550. f. 11.) 



On dead leaves and petioles of Hedera Helix. West Kilbride, 

 Ayrshu-e (Boyd), Dec. 1917. 



The spermogone of Hypoderma Seder cb De Not., which accom- 

 panied it. The pycnidia are at first smaller and occur on the upper 

 side, without the ascophorous stage and often sporeless, but after- 

 wards are found on the pallid spots occupied by the latter on both 

 sides of the leaf. This species belongs to Diedicke's § B, as does 

 X. virgultorum (the spermogone of Hypoderma virgiiltorum DC), 

 and like all the other allied species it lies between the cuticle and the 

 e^jidermal cells. 



287. Melasmia Urticse, sp. n. 



Pycnidiis convexis, ca. \ mm. long., atris, nitidulis, in series longi- 

 tudinales digestis, stromati atro interrupto caulem plures uncias 

 ambienti immersis, tandem poro irregulari v. rima flexuosa brevi 

 apertis. Conidiis linearibus, utrinque prajsei*tim basi attenuatis, ssepe 

 flexis, cuiwatis, v. irregularibus, valde nubilosis, granulosis guttula- 

 tisque, 22-28 X 3-4| /i, sporophoris erectis, confertis, linearibus, dilu- 

 tissime rufo-brunneolis, sjiora brevioribus, e strato cellulari atro- 

 brunneo oriundis suffultis. (Tab. 550. f. 10.) 



Hah. in catdibus emortuis fragilibus Urticce dioicce, Stevenston, 

 Ayrshire (Boyd), Febr. Mart., socio Ehytismate JJrticce. 



This is rather different from the other Melasmias, since it does 

 not dehisce by such elongated fissures, and the spores are very dif- 

 ferent, both in shape and size. If it were not an Imperfect Fungus, 

 it would deserve to be placed in a separate genus, especially as 

 JRhytisma Urticce, of which it appears to be the pycnidial stage, is 

 itself different from the other Rhytismas. 



288. Heteeopatella tmbilicata Grove. 

 H. lacera f. umhilicata Sacc. Syll. iii. 671. 



P3fcnidia erumpent, then superficial, scattered, lens-shaped, at 

 length patelliform, up to \ mm. diam., coriaceous, somewhat smooth, 

 black ; disc concave, dingy reddish. Spores fusoid-falcate, acute at 

 both ends, guttulate, 22-25 x 3-3| jj. ; sporo})hores short, branclied. 

 (Tab. 550. fig. 9.) 



On dead stems of lierbaceous plants. Not common. The pyc- 

 nidium of Hcteroaphcaria Fidelia, in company with which it is 



