SCLEROTINIA 83 



15. Sclerotinia intermedia Ramsey, Phytopathology 14: 323. 

 1924. 



Sclerotia black, irregular, 13 mm. in diameter, often joined 

 together in long chains; microconidia globose, hyaline, 3.8 ju in 

 diameter formed on short, flask-shaped sterigmata. 



Apothecia funnel-shaped to discoid, one to several from a 

 single sclerotium, stipitate, reaching a diameter of 6 mm.; stem 

 7-12 mm. long, 1-1.25 mm. in diameter, expanding upward into 

 the apothecium; hymenium tawny-olive at first, changing to 

 snuff-brown at maturity, buff after the ejection of the spores; 

 asci cylindric to cylindric-clavate, reaching a length of 130 m 

 and a diameter of 7-8 /x; spores ellipsoid to ovoid, with one oil- 

 drop, hyaline, 4-6 X 10-15 m; paraphyses filiform, simple. 



On roots of salsify (Tragopogon porrijolius) and carrot 

 {Daucus Carota) from the markets. 



Type locality: Chicago, Illinois. 



Distribution: Known only from the t>pe locality. 



Illustrations: Phytopathology 14: 324,/. 1; 325,/. 4-6. 



16. Sclerotinia Panacis Rankin, Phytopathology 2: 30. 1912. 



Sclerotia large, .3-1 cm. in diameter, irregularly depressed- 

 globose, solitary, or aggregated, black; conidia in potato-agar 

 cultures, globose, small, 3-5.5 m i" diameter, borne on verticillate- 

 branching conidiophores. 



Apothecia scattered, or gregarious and sometimes cespitose. 

 fleshy to subcoriaceous, closed at first, then expanding, finally 

 flat with a distinct depression in the center from which radiate 

 folds in the hymenium, more or less irregular, reaching a diameter 

 of 1.5-2.5 cm., brown, stipitate; stem smooth, variable in length, 

 tortuous, 2-3 mm. thick; asci narrowly cylindric, reaching a 

 length of 125-137 ji and a diameter of 6.5 n\ spores obliquely 

 1-seriate, hyaline, with two oil-drops, simple, smooth, ellipsoid, 

 5-7 X 11-16 /x; paraphyses scarce, slightly thickened above. 



On sclerotia of "black-rotted" tubers of cultivated ginseng, 

 Panax quinqiiefolium. 



Type locality: Labrador Lake, New York. 



Distribution: Known only from the type locality. 



Illustrations: Phytopathology 2: 29,/. a-c, pi. 3. 



