MELANCONIACEAE 429 



Gloeosporium rhododendri. Briosi e Cavara, Fung. 

 Par., No. 198. Spots very large, irregular, dry, zoned; 

 pustules black, rugulose, shining, concentrically arranged 

 with a black bounding line; conidia cylindric-oblong, 

 straight or slightly curved, ends obtuse or obliquely trun- 

 cate, 15-20X4-5 ft. 



Colletotrichum, Corda. Acervuli innato-erumpent, 

 plane, discoid or elongated, black, surrounded by long, 

 blackish setae ; conidia tereti-fusoid, continuous, hyaline, 

 springing from the tips of short, fasciculate conidiophores. 



Colletotrichum lindemuthianum, Briosi e Cavara, 

 Piante Dan. Exs., No. 50. Forming spots on the 

 epicarp, rarely on stem or leaves, subrotund, dry, and 

 brownish, at first bounded by a red line ; conidiophores 

 bursting through the epidermis in tufts on the diseased 

 spots, fasciculate, cylindrical, simple, 45-55 ft long; conidia 

 acrogenous, oblong, straight or curved, ends rounded, 

 I 5" I 9^ 3*5-5*5 ft? hyaline; spines few in number, or some- 

 times apparently absent. 



Colletotrichum spinaciae, Ellis and Halst. Journ. Myc., 

 1890, p. 34. Maculicolous, spots round, dirty-white or 

 greenish, 2-4 mm. diam., with a slightly raised border ; 

 acervuli on both sides, punctiform, 40-75 ft in diam., 

 clothed with a few (3-12) erect or spreading bristle-like 

 hairs 60-75 ft long X4~4'5 ft thick at the sub-bulbous base, 

 hyaline and subacute above, dark brown below, continuous 

 (or faintly septate ?) ; conidia subfalcate-fusoid, hyaline, 

 2-4 nucleate, 14-20X2-5-3 ft, ends subacute, basidia short. 



Colletotrichum althaeae, Southw., Journ. Myc., 1890, 

 p. 46, pi. iii. Epiphyllous and caulicolous, erumpent, 



