BOTRYTIS 459 



SPOROTRICHUM (Link.) 



Hyphae vaguely and repeatedly branched, with or without 

 septa, all similar and procumbent ; conidia springing from 

 the tips of the branchlets or spinous processes, subsolitary, 

 elliptical or subglobose, continuous. 



Differs from Botrytis in being procumbent, and from 

 Trichosporium in never being black. 



Carnation bud rot. A disease of the flower-buds of carna- 

 tions in the United States is described by Stewart and Hodg- 

 kiss. Diseased buds resemble healthy buds partially opened, 

 but the interior is brown, decayed, and generally moulded, 

 and are sometimes deformed. The injury is caused by 

 Sporotrichum anthophilum (Peck), which is always accom- 

 panied by a mite, Pediculopsis graminum (Ract.). What 

 relation, if any, exists between the fungus and the mite has 

 not been determined, but infections made with the fungus 

 have produced the disease, whereas the introduction of the 

 mite into flower-beds has led to no injury. 



Hyphae forming a loose, white, cottony stratum ; spores 

 springing from the tips of short, lateral branches, globose or 

 broadly ovate, - oooi6- , ooo3 of an inch. 



The authors state that the fungus produces two kinds of 

 spores, some nearly globose and continuous, as described by 

 Peck, others more or less pear-shaped and i -septate, their 

 fig. 3. The latter, however, obviously belong to the genus 

 Trichotliecium, and have no relation to the Sporotrichum. 



Stewart, F. C, and Hodgkiss, H. E., N. Y. Agric. Expt. 

 Sta., Geneva, N.Y., Technical Bull. No. 7 (1908). 



BOTRYTIS (Mich.) 



Sterile hyphae creeping, fertile erect, vaguely branched 

 upwards, branchlets slender, conidia continuous, elliptical, 

 globose or oblong, colourless or tinted, clustered. 



For figure of Botrytis, see illustration of Sclerotinia fuckeli- 

 ana. 



Fig rot. Figs grown under glass very frequently become 

 diseased when half ripe. The free end of the fruit presents a 

 waterlogged appearance, and finally collapses with a wet rot. 



