SPOROSCHISMA DENDEYPHIUM. 42o 



Tribe 20. Dendryphieae. Sacc. 

 DENDEYPHIDM. Wallr. (fig. 13, p. 397.) 



Vegetative hyphae creeping or almost absent, fertile 

 kyphae erect, more or less branched at the tip ; conidia 

 coloured, more or less cylindrical, septate, springing from 

 the tips of the branches, usually produced in simple or 

 branched chains. 



Dendryphium, Wallr., PI. Crypt., ii. p. 300 ; Sacc., Syll., 

 iv. p. 487. 



Dendryphium comosum. Wallr. 



Broadly effused, blackish, hyphae septate, 9-12 /x thick, 

 dark brown, septate, simple, bearing at the apex simple or 

 branched chains of cylindrico-fusoid, straight or slightly 

 curved, yellowish-brown, 3-5 septate conidia, 25-35 x 

 6-7 /,, slightly constricted at the septa. 



Dendryphium comosum, Wallr., Fl. Crypt., n. 1943; Sacc., 

 iv. n. 2335. 



Forming blackish stains on decaying herbaceous stems, 

 especially nettle. 



Dendryphium fumosum. Fr. 



Tufts small blackish-brown, hyphae erect, short, dark 

 brown, septate, paler upwards, branchlets towards the apex 

 pale, closely septate, spreading ; conidia catenulate, cylindric- 

 fusoid, pale brown, 9-13 septate, not constricted at the 

 septa, 25-35 x 5-6 ^. 



Dendryphium, fumosum, Fr., Summa Veg. Scand., 504 ; Sacc., 

 Syll., iv. n. 2337. 



On herbaceous stems, especially umbellifers. 



Dendryphium griseum. B. & Br. (fig. 13, p. 397.) 

 Tufts minute, sometimes more or less confluent, blue-grey, 



hyphae sparingly dichotomously branched above ; conidia 



cylindrical, tips apiculate, arranged in branching chains, 



1-septate, 1417 X 45 /x,, almost colourless. 



Dendryphium griseum, B. & Br., Ann. Nat. Hist., n. 540 



t. vi. f. 11 ; Sacc., Syll,, iv. n. 2344. 

 On putrid nettle stems. 



