702 ADDITIONAL EXERCISES 



Sporangioles circinate, caducous, sporangiophores more elevated than in 

 preceding species. 41 M. lamprosporiis Lendner (Fig. 242). 

 Sporangia 60 to 80/1, spores normally 8 to 10, spheric or accompanied by 

 abnormal spores, oval 8 to lo/t by 30/1 long, without sporangioles. 42 M. 

 dimorpkosporus Lendner. 



12. Large species 9 to 1 2 cm. high. (13) 

 Small species. (14) 



13. Sporangiophores 9 to 10 cm., sporangia up to i mm. diameter, spores 10.5 

 by 2&11. 43 M. irkuUnsis Schostakowitsch. 



Sporangiophores 10 to 12 cm., sporangia 500>i, spores sii by 8.6. 44 if . • 

 Wasnessenskii Schostakowitsch. 



14. Wall of sporangia not diffluent, breaking into pieces. 45 M. brevipes Riess. 

 Wall of first sporangia diffluent. (15) 



15. Spores elongate with punctate spore walls, sporangia blackish, ioom diameter. 

 46 M. ambiguus Vuillemin. 



Spores subspheric with smooth walls. (16) 



16. Species far min g on bread or grape-juice gelatin a mycelium somewhat 

 raised and of a yellow color. 47 M. Rouxianus Wehmer. 



Species forming a matted growth of i to 3 cm. tall. (17) 



17. Species branched but little. (18) 

 Species copiously branched. (19) 



18. Sporangia 50 to 350/1, columella spheric, spores spheric or elliptic or angular, 

 4.2 by 6.Sfi with chlamydospores. 48 M. geophilus Oudemans. 

 Sporangia 90/1 to 170/1 diameter, columella ovoid, spores subspheric 5 to 6/1 

 by 6 to 8/1 rarely lo/i. 49 M. strictus Hagem. 



19. Sporangia 35 to 70/1 (90/1 diameter), spores 6/1 by 8/1 or 8 to lo/i diameter, 

 yellow pigment in hyphse weakly developed. 50 M. Prainii Chodat & 

 Nechitch. 



Sporangia 50/1, wall more diffluent, spores more frequently oval and very 

 small, 4 to s/i by 5 to 7/1, also 4, to 7/1 diameter. 51 M.javanicus'- Wehmer. 



APPENDIX \ll 



Keys for the Determination of Species of Aspergillus and Penioluum 



For student use in systematic study, or identification of the green moulds be- 

 longing to the genus Aspergillus, the teacher will find the following key, adopted 

 from "Household Bacteriology" by the Buchanans, pages 76 and 77, of great value. 

 Lafar in his "Technical Mycology," Vol. II, Part 2, also gives on page 308 auseful 

 specific summary. The different species may be kept in culture for distribution 

 as unknown to the members of the class. 



KEY TO common SPECIES OF ASPERGILLUS 



I. White spores, or nearly white. 

 A. Sterigmata unbranched. Aspergillus candidiis. 

 ' M. dubius is a variety of AT. javanicus. 



