DIPLOCLADIUM. 335 



imperfect whorl of 3-4 short, erect branchlets ; conidia 

 apical, solitary, elliptic-clavate, becoming 1-septate, 12-14 

 X o fj.. 



Diplodadium penicillioides, Saoc., Syll., n. 872 ; Grev., pi. 

 150, fig. b. 



On decaying species of Polyporus, Agaricus, and Panus ; 

 along Hypomyces aurantius, of which it is considered to be the 

 conidial form. 



Diplodadium melleum. Sacc. (fig. 24, p. 313.) 



Forming minute, honey-coloured tufts ; hyphae branched 

 at the apex, branchlets arranged in whorls, acute at the tip ; 

 conidia elliptical, base slightly attenuated, almost colourless, 

 1 2-14 x 5-6 /*. 



Diplodadium melleum, Sacc., Syll., n. 874. 



Dactylium melleum, B. & Br., Ann. Nat. Hist, n. 1382, 

 t. 8, f. 6. 



On old specimens of Polyporus and Stcreum. 



Diplodadium tenellum. Mass. 



Tufts white or with a reddish tinge ; hyphae aggregated, 

 fertile, short, slender, erect, septate, branchlets short, sub- 

 verticillate ; conidia slightly obovate, colourless, 1-septate, 

 in clusters of 34 at the tips of the branches, 1213 X 6 JJL. 



Mucrosporium tenellum, Sacc., Syll., n. 924. 



Dactylium tenellum, Fries, Syst. Myc., iii. p. 413. 



An examination of authentic specimens shows the spores 

 to be constantly 1-septate, hence the species cannot be a 

 Mucrosporium, as placed by Saccardo. 



Diplodadium macrosporum. Mass. 



Sterile hyphae loosely intervroven, white then pale rose- 

 colour ; fertile subverticillately branched at the apex ; 

 eonidia elliptic-oblong, apiculate at the base, colourless, 

 1-septate, 20-25 x 8-10 a, produced in clusters of 2-3 at the 

 tips of the branchlets. 



Dactylium macrosporum, Fries, Syst. Myc., iii. p. 414; Sacc., 

 Syll., iv. n. 918. 



On bark, moss, &c. 



The spores are constantly 1-septate, hence the present 

 species cannot belong to the genus Dactylium, where it was 

 pbu-ed by Saccardo. 



