VKRTICILUUM HETEROCIvADUM. 21 



were made in distilled water, in tap water and in 5 per cent, glucose at a 

 temperature of 15 to 20 C. No germination occurred up to December 

 11, 1906, when the slides were discarded. 



'2. On January 5, 1907, hanging drop cultures of conidia in distilled 

 water were made from leaves picked September 28, 1906, which had re- 

 mained in the laboratory exposed to the atmosphere for 68 days. No germ- 

 ination was noticed up to January 9, 1907, when the slides were discarded. 



3. On January 5, 1907, hanging drop cultures in tap water were made 

 from leaves collected by E. W. Berger on December 18, 1906, and kept in 

 the laboratory 18 days. On January 7, many conidia had germinated, and 

 on January I), some hyphal tubes were twice as long as the conidia. 



4. ( )n April 18, hanging drop cultures were made from leaves collected 

 on September 28, 1906, at Orlando, and kept in the laboratory 203 days. 

 No germination had occurred by April 29, 1907, when the slides were dis- 

 carded. 



A SUPER-PARASITIC OF ASCHERSONIA FLAYO-ClTRINA. 



A super-parasite belonging to the genus Cladosporium has been noticed 

 as of common occurrence on Aschcrsonia flaio-citrina. Attention was first 

 called to it by A. W. Morrill, who afterwards observed it at Orlando over- 

 running this Aschersonia, in the summer of 1906. Later on a brief report 

 was given by E. W. Berger. Plate VII, Fig. 4.3, shows a leaf from Or- 

 lando with pustules of Aschcrsonia flavo-citrina covered over with the 

 dark brown Cladosporium. This same fungus has also been observed by 

 the writer associated with sooty mold (Meliola) in secretions of honeydew 

 from Alcyrodes citri, and it appears to aid at times in smothering the white- 

 fly larvae, as does also the Meliola. Cultures of this fungus were readily 

 obtained in 5 per cent, glucose agar, and the fungus was transferred to 

 potato plugs. The growth was rapid and the color was the same as on 

 the leaves. 



DISTRIBUTION OF ASCHKRSONIA Kr.AYO-ClTRINA IN FLORIDA IN 1908'. 



Altamonte Springs, 



Gainesville (introduced) , 



Largo (introduced), 



Maithmd, 



New Smyrna (introduced), 



( )rlando, 



Oviedo, 



St. Petersburg (introduced), 



Winter Park. 



IV. YERTICILLIUM HETEROCLADUM PENZ. 



The attention of the writer was first called to this fungus in November, 

 1!)()5, b\ E. H. Sellards, Entomologist of the Florida Experiment Station, 

 who brought in specimens of Brown fungus from Palmetto, Florida, with 

 which was associated a cinnamon-colored fungus. At the time of its dis- 



