A scigerous Stage of a ‘ Brown Rot ’ Fungus . 1 3 5 
Fig. 4. Culture, on prune-agar, grown at room temperature : the product of a single ascospore 
22 days after isolating the spore (cf. Ann. of Bot., vol. xxxiv, No. 134, Plate IV, Fig. 5). 
PLATE VII. 
Fig. 5. Asci of Sclerotinia cinerea. x 500. a and b. With monostichous spores, c. An 
ascus becoming vacuolate ; spores not strictly monostichous. d. An ascus with a single large vacuole 
and distichous spores ; condition a few seconds before the ascus dehisced, e. The same ascus shown 
at d , but after dehiscence, f An ascus with three abnormally small spores. 
Fig. 6. Types of paraphyses. x 500. 
Fig. 7. Ascospores, showing variation in shape and size, x 1,000. 
Fig. 8. Ascospores germinating in distilled water : at end of 20 hours at room temperature 
(i8°-2O 0 C.). x 500. 
Fig. 9. Ascospores germinating on prune-agar : at end of 20 hours at room temperature, 
x 500. 
