Lehman: Penicillium spiculisporum 



273 



added to the substratum, the surface appears gray with faint 



shades of green and brown. Other pigments are associated with 



the perithecia. These bodies are at first white, and may remain 



so indefinitely, but very often they become cream, pinkish or 



some shade of yellow. All these colors may be present in a 



single tube of steamed rice. The yellow varies in shade from. 



sulphur through lemon-yellow to yellow and may deepen to 



golden-yellow in our cultures (13). Yellow is often transitory 



and erratic coming on comparatively few, if any, perithecia of a 



given rice culture, and usually fading to cream or white within 



a week or infrequently deepening to golden yellow. On potato 



plugs yellow is less transitory and more certain to develop. The 



reverse of petri dish cultures is often cream in color and pink is 



frequently seen in small mycelial areas in rice tubes. 



Agricultural Experimental Station, 

 West Raleigh, N. C. 



References 



1. Saccardo, P. A. Sylloge Fungorum. 



2. Lafar, Franz. Handbuch der Technischen Mykologie, 4: 219-234. 1906 



3. Engler, A., and Prantl, K. Die Natiirlichen Pflanzenfamilien. Teil 1, 



Abteilung, 1 : 304-306. 1897. 



4. Thorn, Charles. Cultural Studies of Species of Penicillium. U. S. D. A. 



Bur. Animal Indus. Bull. 118. 1910. 



5. Sopp, Johan-Olson. Monographic der Pilzgruppe Penicillium mit Be- 



sonderer Beriicksichtigung der in Norway Gefundenen Arten. Skrifter 

 utgit Videnskapsselskapet i Kristiania f. 1912, I Mat.-Nat. CI. 1. Band, 

 Nr. 11, Kristiania 1912: 208 pages 23 Taf., 1 Textfig. 



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Mycol., 11 : 161-165. pi. g. 1913. 



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8. . Etude de deux Penicillium nouveaux producteurs de pigments. 



Bui. Soc. Mycol. France, 28: 270-280. pi. 13. 1912. 



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 1913. 



10. . Etudes morphologique et biologique d'un Penicillium nouveaux, 



P. Petchii n. sp. Annal. Mycol., 11: 272-277. pi. 14. 1913. 



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logia, 7: 134-142. fig. 1. 191 5. 



12. Thorn, Charles, and Turreson, G. W. Penicillium avellaneum. A New 



Ascus-Producing Species. Mycologia, 7: 284-287. fig. 1-3. 1915. 



13. Saccardo, P. A. Chromotaxia. Tabellae Colorum, 1894. 



