336 FUNGI. [Helmint/i osporium^ 



so close that the sporidia appear globose, and their true nature might 

 easily be overlooked. Kees von Esenbeck describes his plant as forming 

 irregular, pulvinate tufts, about ^ a line high, consisting of soft olive 

 fibres, and yellow-green sporidia. In every point, except its less tufted 

 mode of growth and difference of colour, mine agrees with his, and I 

 therefore consider it rather as a form than as a new species. 



lis. Helminthosporium. Lk. Helminthosporium. 



Sporidia large, often clavate, septate, at first growing on the 

 erect fibres. — Name, s/./x/y;, a toorm, and arroooc^ seed. 



* Fibres cuspidate, sporidiferoiis. 



1. H. macrocdrpum, Gyqy. (large-seeded Helminthosporium) ; 

 fibres aggregate lax subulate simple black, sporidia large cla- 

 vato-fusiform pellucid 6 — 8-septate. Grev. Sc. Crypt. Fl. t. 148. 

 /. 1. Fr. Syst. Myc. v. 3. p. 356. Scler. Sitec. I lu 438.— 



Spuceria ciliaris, Sow. ! t. 339. Part.! v. 3. 7i. 1101. 



On rotten sticks. Not uncommon. — Easily distinguished by the large, 

 clavate, multiseptate sporidia. Tlie fibres are frequently broken off 

 above, so as to lose in great measure their subulate form. 



2. H. suhuldtum, Nees, {awl-shaped Helmhitltosporiunfi) ; fibres 

 aggregate subulate nearly simple straight black, sporidia large 

 clavate incurved 3 — 4-septate. Nees^ I. c. p. 242. /. 13. Lh. 

 Sp. 1. p. 48. Corda, I. c. t. 14. Fr. Syst. Myc. v. 3. p. 357. 



On oak branches. Appin. Captain Carmichael. — Fibres far more 

 slender than in the foregoing, so that the habit is different. 



** Fibres obtuse, sporidiferous. 



3. H. veliUinum, Lk. (velvety Hehninthosporiuiii) ; fibres 

 densely aggregate somewhat branched obtuse black, sporidia 

 large obovato-clavate 3 — 4-septate. Lk. Sp. 1. p. 47. Nees, 

 Syst. /. 65. B. Grev. Sc. Crypt. Fl. t. 14S. /. 2. Fr. Syst. 

 Myc. V. 3. p. 359. 



On rotten sticks. Appin. Captain Carmichael. Edinburgh. Dr. 

 Greville. 



4. H.fusisporium, Berk. (Spindle-seeded Helminthosporium) ; 

 fibres densely aggregate slightly branched obtuse black, sporidia 

 fusiform narrower than the fibres 6 — ^7-septate. 



Oi\ vot\.cn s\\c\is,\\\t\\ Hi/dnumochraceum. Beeston, Notts. Rev. 

 M. J. Berheley. 



5. H. nd?iuni, Nees, (dark-seeded Helmi?ithosporium) ; fibres 

 scattered simple or forked obtuse knotty their apices forming 

 large subcylindric 3 — 4-septate sporidia, slightly shorter than 

 the fibres. Nees, in Nov. Act. Sjc. I. c. f. 13. Fr. Syst. Myc, 

 z\ 3. p. 359. 



On stems of the larger herbaceous plants. Winter. Very common 

 in Norths. Rev. M. J. Berheley. — 1 cannot distinguish my plant from 

 that of Nees, though its habitat be different. The sporidia are of a dark, 

 subpellucid brown. 



