COLLETOTRICIU M. 





. Jt_ 



appear n the leave-, and depressions on the -ieiii. 



extendiiiu so far round that the whole -hoot dries up. The 



conidial patches are very much the same <n the ditleivnt lm-t-. 



and consist of short conidiophoiv- fmrn 



which o\-al, unicellular, hyaline eonidia 



are altjointed. 



C. lycopersici Chest, i- the cause of 

 a spot-disease mi the fruit nf tomato in 

 the Cnited States. 



C. spinaciae Kll. et. Hal-, causes a 

 destructive di-ea<e on cultivated spinach. 



C. malvarum I'.r. et (_'asp. (C. ultlnnu, 



Soiithw. 1 ) produces a disease of cultivated 

 hollyhock. It is most injurious to the 

 seedlinu plants, and has caused ureat 

 In iii America and Sweden. The funiiu- 

 may attack any organ, and produce- spots 

 which enlarge so rapidly that death o( the 

 host may result. 



C. gossypii Southw.- Anthracnose of 

 < 'niton This disease, although it mav 



o 



lie found on -tenis and leaves, i- nm-t 



freiplelit and lim-t coli.-pieiioiis on the 



fruits or "1 mils" of the cotton-plant. 



The tir.-l Signs ale tiny depiv--ed -jiols 



of a reddish-lirown colour, and a- the-e 



enlarge lhe\ CaUSe lilackellillU of llei^ll- 



ti-sue. \\'hen the -pore- are de\ eloped llie Spots 



Ki'.. 



..]! |H,,1 ,.| I, 



dirty grey, or peihap- pinkish if the spores are pie-eiit 

 in lar-e niimliers. Fruit attacked in ihi- \\ay dues not mature 

 \\ell. and the \ield of cotton is -i-eatlx prejudiced. Atkinson 

 found the cni\ledons easj to infect with the di-ea-c. The 

 Spores are ohlmi- and taperin-, \\ith a -hallow cmi-l riei ion in 

 the middle: they are l.orne either mi -Imrt cnlmirle-- lu-idia 



or on loll'j, oli\-e-colollled. -eplate -etae. Imtll killd- of Ci.nidio- 

 pliol'e liei||'_' produced ill ace|\uli ol patehe-. 



C. adustum V.\\. i~ tin- cause "\ .' l--:it' -|'"' "n "i" 1 i" Kl"iiil.i 



3outhworth, " A Nf\v Bollyhock I > > ' ' y, vi., I s '. ||p 



- 'Uthworth, .Inn, unl i.i Jtiycoloijy, \i., IS'.HI. p. HMI. 



. \tkiieii ii, . I/"' ' I /. - /.' N" II, 1> 



