E. S. SALMON ON NEW OR RARE BRITISH FUNGI. 373 



14 — 16 X 9 — 10 fji, epispore minutely rough ; paraph yses slender, 

 septate, enlarged at the apex (about 4 fx wide) and usually 

 curved. 



Mab. — Associated with Tetraplodon mnioides B. k S., on a 

 mountain called Quinag, near Inchnadamph, Sutherland, Scot- 

 land (H. N. Dixon, W. E. Nicholson, and E, S. Salmon, July 

 1899). 



Easily know^n by the tetrasporous asci with minutely rough 

 spores. Although as a rule four spores only become mature, each 

 ascus nearly always contains in addition four rudimentary spores 

 (Fig. 5), and rarely asci may be observed in which eight spores 

 attain full development (Fig. 6). H. carneola, therefore, 

 illustrates very clearly the passage from the octosporous to the 

 tetrasporous condition, and shows that in the present case the 

 four spores are due not to fewer nuclear divisions in the young 

 ascus, but to the non- development of half of the spores. 



H. carneola is apparently a very rare species ; the only other 

 locality known at present is Salzburg, Austria- Hungary, where 

 it was originally discovered by Sauter. 



Sterigmatocystis nigra V. Tiegh. (Figs. 8 — 10). 



Aspergillus niger Y. Tiegh. Comptes Rendus, t. Ixv., 1092 (1867) ; 

 Ann. Sci. Nat. ser. v., t. viii., 240 (1867) ; I.e., t. xi., pi. 7, 

 f. 3 (1869) ; Raulin, Ann. Sci. Nat., ser. v., t. xi., 205 (1869) ; 

 Gayon, Mem. Soc. Sci. Phys. Nat. Bord., ser. ii., t. 1, 451 

 (1876). 



Eurotium nigrum De Bary, Beitr. Morph. Phys. Pilz. I., § III., 

 21 (1870). 



Sterigmatocystis nigra Y. Tiegh. in Bull. Soc. Bot. France, xxiv., 

 102 (1877) ; Bainier, I.e. xxvii. 30, pi. 1, f. 4 (1880); Sacc. 

 Syll. Fung., iv., 75 (1886). 



Forming effused, powdery, black patches, 1 — 3 cm. across ; 

 fertile hyph^e erect, 700 — 1000x12 — 15 /x, smoky olive; head 

 globose, black, basidia about 40 /x long, densely packed and 



