Fungi 19 c 



In caulibus Ranunculi nivalis L. 



Pycnidia shining black, plane to centrally depressed, distinctly ostiolate, 

 120-170 /<. Conidia hyaline, 2-septate, curved, narrow, acute, aristate at one 

 end, on basidia less than half their length, 18-24 x 1-1-5 ai; bristles 5-9 fi long. 



On stems of Ranunculus nivalis L. Collinson point, June 14, 1914, 97916. 



SPHAERIOIDACEAE. 



Phoma herbarum West. 



On stems of Erysimum inconspicuum (S. Wats.) McMillan. Big falls. Tree 

 river, July 8, 1915, J. R. Cox and J. J. O'Neill, 98466. 



Stylospores various in size, some of them irregular, 2-7 /*. 



Phoma Cerastii-maxitni n. sp. 



Pycnidiis atris, cellis polygonis, muris crassis. Conidiis subglobosis, irregu- 

 laribus, hyahnis, 5-7 jit. 



In foliis Cerastii maximi L. 



Pycnidia black, individual cells dark-brown, polygonal, 7-9 ix, thick-walled. 

 Conidia subglobose, irregular, hyaline, 5-7 m- 



This is distinct from Phoma nebulosa (Ft.) Mont. var. Cerastii Pass, which 

 has bacillar spores. 



On leaves of Cerastium maximum L. Cape Krusengtern, March, 1916, 

 J. R. Cox, 101931. 



Phoma sp. 



On Pedicularis sp. Taylor island, August 22, 1918, Capt. J. F. Bernard. 

 Spores nucleate at each end, 9 x 3 /x. 



Dendrophoma Lupini-arctici n. sp. 



Pycnidiis atris, subcuticularibus, papillatis, 270-360 n; ostiolis perforatis, 

 erumpentibus, 36 n. Basidiis valde ramosis. Conidiis hyahnis, oblongis, angus- 

 tis, nucleatis, 6-9 x 2-5-3 /;. 



In caulibus Lupini arctidi Watson. 



Pycnidia large, black, sub-cuticular, papillate; the large perforate ostiola 

 — 36 M — erumpent. Conidia borne on many-branched sporophores, hyaline, 

 fuliginous in the mass, narrowly oblong, minutely nucleate at each of the rounded 

 ends, 6-9 x 2-5-3 fi. 



On stems of Lupinus arcticus Watson. Mouth of the Mackenzie river, 1893, 

 Rev. Isaac 0. Stringer, 14627. 



Diplodina minor n. sp. 



Pycnidiis nigricantibus ad basim saepe sed non semper hyphis perpaucis 

 cinctis. Conidiis hyahnis, oblongis, extremis partibus nucleatis, uniseptatis, 

 5-8 X 2-2-5 fi, plerumque 7 x 2-5 /i. 



In caulibus plantae ignotae. 



Pycnidia dark-coloured, scantily surrounded at the base, but not in every 

 example, by brown, radiating hyphae. Conidia hyahne, oblong, nucleate at 

 each end, uniseptate, 5-8 x 2-2-5 fi, mostly 7-2-5 /x. 



On stems of an unknown plant. Chantry island. Jure 17, 1916. 



A very similar species was found on stems and leaves of Papaver nudicaule 

 L. at Clifton point near the mouth of the Croker river by the Rev. H. Girling, 

 July 1, 1916, 100472. The fructification was slightly larger, the longest conidia 

 reaching 11 or 12 ju. 



