366 THE MICROSCOPIST. 



fertile branches crowned by globules of heterogeneous eon- 

 glutinated spores. 



5. Bolacotricha. Filaments simple, uniformly articulate 

 at apex; spores conglomerate, large, globular, shortly 

 stalked, contents granular. 



6. Helminthosporium. Filaments erect, simple, septate ; 

 spores transversely septate. 



7. Triposporium. Filaments erect, septate, sterile 

 branches solitary, more or less spreading ; fertile branches 

 shorter, at tips solitary, stellate, shortly stalked spores. 



8. Helicosporium. Filaments subulate, closely septate, 

 diaphanous at summit ; spores threadlike, septate, spirally 

 coiled, then expanding elastically. 



9. Cladotrichum. Filaments septate, branched, branches 

 and branchlets with septate spores at tips. 



10. Dematium. Filaments septate, with verticillate 

 branchlets below, simple and whiplike above ; spores 

 crowded on apices of ramules. 



11. Cladosporium. Filaments septate above, bearing 

 spores in rows forming short moniliform branchlets. 



12. Macrosporium. Filaments suberect, septate, deli- 

 cate, evanescent, with erect stipitate spores, with many 

 transverse and usually some longitudinal septa. 



13. Arthrineum. Filaments tufted, suberect, annulate 

 with opaque septa ; spores fusiform, septate, large. 



14. Camptoum. Filaments as preceding ; spores ovate, 

 curved, small. 



Family IV. MUCIDINES. Mycelium filamentous, spores 

 solitary, or crowded on articulated or branched tubular 

 and pellucid filaments, soon separating and mingling with 

 the mycelium or adherent in chained rows (moulds, mil- 

 dews, etc.). 



A. Fertile filaments (pedicels) simple or branched, ter- 

 minating in single spores, or a short row. 



* Spores simple. 



