62 The North American Cup-Fungi 



Distribution: New York and Canada. 



Illustrations: Mycologia 24: 473,/. 1; pi. 15, f. 1, 2; pi. 16, 

 f. 3-5; Mycologia 29: 307, /. 1, 2; 309, /. 3-5; 312, /. 6; 313, /. 

 7-9; 37: 681,/. 19, 20. 



2. Botryotinia Ricini (Godfrey) Whetzel, Mycologia 37: 680. 



1945. 

 Sclerotinia Ricini Godfrej-, Phytopathology 9: 566. 1919. 



Conidial stage {Botrytis) forming wide-spread, cobwebb\- or 

 somewhat woolly masses, pale drab-gray, dried specimens dark 

 olive-gray; fertile hyphae long slender, olivaceous when mature, 

 dichotomously branched, terminal branches compact, collapsing 

 when conidia fall; conidia borne on sterigmata, globose, smooth, 

 hyaline, 6-12 yt in diameter; microconidia globose, hyaline, 2-3.5 n 

 in diameter, on short, obclavate conidiophores from the sides 

 of the hyphae or tips of special branches; sclerotia black, rough, 

 elongate, irregular, 1-25 mm. in diameter. 



Apothecia one to several from a single sclerotium, 5-30 mm. 

 high, usually 6-15 mm., infundibuliform to cyathiform and 

 discoid, stipitate, cinnamon-brown to chestnut-brown, becoming 

 saucer-shaped, with the margin somewhat recurved, 1-7 mm. in 

 diameter; stem cylindric, slender, smooth, flexuous; asci cylindric- 

 clavate, reaching a length of 50-110 n and a diameter of 6-10 

 mm., 8-spored; spores ellipsoid to subfusoid, hyaline, simple, 

 containing two oil-drops, 4-5 X 9-12 jx; paraphyses abundant, 

 filiform, septate, hyaline, 1.5-2 mm. in diameter. 



Parasitic on Ricinus communis, on inflorescence, or on leaves. 



Type locality: Orlando, Florida. 



Distribution: Florida to Texas and Cuba. 



Illustrations: Phytopathology 9: pi. 40, 41. 



3. Botryotinia Draytoni (Buddin & Wakef.) Seaver, comb. nov. 



Sclerotinia Draytoni Buddin & Wakefield, Trans. Brit. Myc. Soc. 29: 150. 

 1946. 



Sclerotia black, smooth, applanate, then convex-lenticular, 

 about 3-7 X 8-12 mm., in irregular masses about 2.5 cm. long, 

 agglutinate, white within; microconidia globose, 2-2.5 ^ in 

 diameter; macroconidiophores, springing from the sclerotium, 

 erect, brown below, 12-15 n in diameter, above hyaline, two to 

 three branched, the branches capitate, with numerous minute 

 sterigmata; conidia hyaHne, or pale-brown, ellipsoid, or broadly 

 ovoid, 5-7.5 X 8-16 m- 



