XEW OR XOTEWOIITHY FUNdl 85 



On dead stems of Eui)liorhia i^alustris, Edgbaston Botanic 

 Gardens. Feb. -Mar. 



353. Leptothyrium macrothecium Fckl. Sjmb. Myc. p. 383, 

 pi. 2. f. 28. Sacc. Syll. iii. 633 ; Fung. Jtal. pi. 1489. Alleseh. vii. 

 338. ? L. jjrotuherans Sacc. S^dl. iii 635. ? Geutliospora concava 

 i)esm. Sacc. Syll. iii. 280. 



Pycnidia hy])opliyllous, scattered, oblong or hemisplierical, convex, 

 dull (not shining), ^-1 mm. lo'ng, bro\vnish-l)lack, moutliless ; texture 

 above of small brown parenchymatous cells, thicker below and brown. 

 Spores fusoid, curved, acute at the lower or both ends, 6-8| x 1-li /^ ; 

 sporophores fasciculate, linear-filiform, furcate or branched, colourless, 

 15-20 X f /x^ rising from the lower thick stratum. 



On dead and fragile leaves of Conius alha. Kilwinning, A}^*- 

 shire (Boyd). Dec. 



Distinguished by its dull opaque appearance, and by its occurrence 

 on leaves, from the polished and shining L. protuherans Sacc, which 

 I have found near Birmingham on dead stems of Ejjilobiuiii 

 aiig list i folium, and Mr. Boyd on dead branches of Bulus in Ayrshire. 

 The specimens on Coruus appear to be identical with Berkeley's on 

 JRose leaves, named Ceiithospora concava Desm. in the Herbarium at 

 Kew, which have exactly similar spores. Saccardo records L. macro- 

 thecium on leaves of Potent ilia, Tormentilla^ Hosa, and Qiiei^cus. 

 Very possibly L. protuherans is only the stem-form of the same 

 species, but it is larger and has a shining surface. 



Shear and Dodge {Mycologia, 1921, xiii. 135-170), show that 

 one of the forms of L. macrothecium^ which produces a disease on 

 Strawberry fruits, etc., in the United States, has a Discomj^cetous 

 stage to which they give the name JBezizella Lytkri (Desm,), with 

 a conidial stage belonging to the genus Hainesia. They consider 

 that the same fungus has been recorded under many names and 

 attacks on enormous number of plants (over hfty), including in 

 addition to those mentioned above. Pelargonium, (Enothera, Lytlwum, 

 etc., and occurring alike on leaves, stems, and fruits. 



354. Leptothyrium melaleucum, nom. nov. 



Pycnidiis epiphyllis, \-\ mm. latis, atris, convexis, rotundatis v. 

 anguiatis, intus pseudolocellatis, cuticulam tandem rima stelliformi 

 findentibus ; parte superiore tenui, olivaceo-brunnea, cellulas epider- 

 micas occupante, inferiore subsimili at crassiore, strato prolifero 

 hyalino, subgelatinoso. Sporulis copiosis, linearibus, rectis, utrinque 

 obtusis V. interdum basi subacutatis, coacervatis etiam achrois, muco 

 tenui obvolutis, 8-9x1^-11/^, sporophoris linearibus, erectis, -sub- 

 sequilongis suffultis. 



Kah. in foliis Vaccinii Vitis-idcBfp, Killin, Perthshire (Boyd), 

 Jul., socio Lo]jhodermio melaleuco De Not. 



The pycnidial wall is pseudoparenchymatous ; the subhyaline 

 layer which lines it below is composed of elongated cells running- 

 parallel to the wall, and the sporophores arise from these latter cells 

 at right angles. The layer of elongated cells also extends upwards in 

 places, and divides the cavity into pseudoloculi as in many species of 

 (Ujtoi^pnra. The upper pycnidial wall which occupies the epidermal 

 cells tinallv destroys them, so that ultimately the pycnidium is 



