HELMINTHOSPORIUM. 409 



Helminthosporium apiculatum. Corda. 



Tufts black, tomentose, effused, liyphae in fascicles, flexu- 

 ous, unbranched, 120-160 X 8 /x, tip minutely denticulate, 

 brown; conidia elliptic -fusiform, 6-8-septate, brown, 35-40 

 X 10-13 ya. 



Helminthosporium apiculatum^ Corda, Ic. Fung., i. p. 13, 

 f. 191 ; Sacc, Syll., iv. n. 1975. 



On wood. 



Helminthosporium scolecoides. Corda. 



Tufts broadly eifused, indeterminate, black ; hypliae 

 iDranched, angularly bent, rigid, brown, semipellucid ; conidia 

 very long, 8-10-septate, brown, subtorulose, 50-60 /x long, 

 terminal segment pale. 



Relmintliosporium scolecoides, Corda, Ic. Fung., i. p. 13, f. 

 180; Sacc, Syll., iv. n. 1978. 



On wood, herbaceous stems, &c. 



Helminthosporium folliculatum. Corda. 



Tufts minute, indeterminate, tomentose; hypliae lax, 

 branched, slender, flexuous, brown, 150-200 x 8-10 /x. ; conidia 

 very long, pod-shaped, thickish, brown, semipellucid, 6-7-sep- 

 tate, cells internally cuboid, 40-60 x 11-14 /x, paler at the 

 ends. 



Helminthosporium folliculatum, Corda, Ic. Fung., i. p. 13, f. 

 180; Sacc, SylL, iv. n. 1979. 



On rotten wood, stems of species of Brassica, Zea, and 

 various Umbellifers. 



Helminthosporium gongrotrichum. Corda. 



Tufts minute, black, somewhat eifused ; hyphae simple, 

 curved, rigid, nodulose, at first brown then quite black and. 

 opaque ; conidia elliptical, 34-35 yu. long, attenuated at both 

 ends, 7-8 septate, brown, pellucid. 



Helminthosporium gongrotrichum, Corda, Icon. Fung., i. p. 13, 

 t. iii. f. 192; Sacc, Syll., iv. n. 1981. 



On rotten beech wood, &c 



Helminthosporium dendroideum. B. & Br. 



Spots indistinct, scattered, very thin, hyphae erect, attenu- 

 ated upwards, septate, wdth short, lateral, conidia-bearing 

 hranchlets ; conidia oblong-fusoid, slightly curved, 8-10-sep- 

 tate, 55-65 X 8-10 fx^ brown, basal cell pale. 



