702 ADDITIONAL EXERCISES 



Sporangioles circinate, caducous, sporangiophores more elevated than in 

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

 Sporangia 60 to 8o/i, spores normally 8 to 10, spheric or accompanied by 

 abnormal spores, oval 8 to iom by 30/i long, without sporangioles. 42 M. 

 dimorphosporus Lendner. 



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

 Small species. (14) 



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

 by 28;u. 43 M. irkutensis Schostakowitsch. 



Sporangiophores 10 to 12 cm., sporangia 500M, spores 5;u by 8.6. 44 M. 

 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, 100^1 diameter. 

 46 M. amhiguus Vuillemin. 



Spores subspheric with smooth walls. (16) 



16. Species forming on bread or grape-j-uice 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 350M, columella spheric, spores spheric or elliptic or angular, 

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

 Sporangia 90^1 to 170M diameter, columella ovoid, spores subspheric 5 to 6m 

 by 6 to 8m rarely iom. 49 M. strictus Hagem. 



19. Sporangia 35 to 70M (90M diameter), spores 6m by 8m or 8 to iom diameter, 

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

 Nechitch. 



Sporangia 50M, wall more diffluent, spores more frequently oval and very 

 small, 4 to 5m by 5 to 7m, also 4 to 7m diameter. 51 M . javanicus^ Wehmer. 



APPENDIX VII 

 Keys for the Determination of Species of Aspergillus and Penicillium 



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 a useful 

 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 catididus. 

 1 M. dubius is a variety of M. javanicus. 



