344 FUNGUS-FLOEA. 



DACTYLAEIA. Saco. (fig. 2i, p. 27i.) 



Saprophytic. Sterile hypliae present or almost obsolete; 

 fertile erect, simple ; conidia fusoid or more or less clavate, 

 clustered in an irregular manner at tlie apex of the stoiu, 

 2- many-septate, hyaline or brightlj' coloured. 



Dactylaria, Saoc, Mich., ii. p. 20 ; Sacc, Syll., iv. p. 194. 



Bactylium, Bonord. (in part.) 



Dactylella differs in having only a single conidium at the 

 apex of the fertile hj-phae. 



Dactylaria orchidis. Cke. & Mass. (fig. 24, p. 274.) 

 Scattered or solitary ; fertile hyphae erect, simple, 

 springing from a delicate, branched mycelium, septate, 

 250-280 X 10-12, filled with orange colouring-matter, apex 

 2— 3-times dichotomous, branchlets short, almost erect ; 

 conidia fusoid, 4-guttulate, then 3-septate, hyaline, 40-50 x 

 7-9 //,, solitary at the tips of the branchlets, and altogether 

 forming a lax head. 



Dactylaria orchidis, Cke. & Mass., Grev., xix. p. 42 ; Sacc, 

 Syll., Suppl., vol. X. n. 7248. 



On putrid leaves of Oncidium macranthum. 



Tribe 9. Bamularieae, Sacc. 

 EAMULAEIA. linger (emended), (figs. 27, 28, p. 274.) 



Parasitic. Hj-phae simple or with short, scattered 

 branchlets, tips denticulate and bearing conidia which are 

 1- many-septate, colourless Of larely brightly coloured, and 

 m some species catenulaie. 



Hamularia, Unger, Exanth., p. 169 ; Sacc, Syll., iv. p. 196. 



The parasitic habit, simple or sparingly branched hyphae 

 denticulate and bearing the septate conidia at the tips, cha- 

 racterise the genus, which differs from Ovularia only in the 

 septate conidia. 



Ramularia hellebori. Fuckel. (fig. 28, p. 274.) 

 Forming suborbicular spots on boih sides of the leaves, 

 spots white wiih a rather broad black margin ; hyphae 



