lOO MINNESOTA BOTANICAL STUDIES. 



I. Sclerotinia tuberosa (Hedw.) Fckl. Symb. Myc. 331. 1869, (Plate 

 XIV, Fig. I. Plate XVII, Fig. i.) 



Octospora tuberosa Hedw. Musci. Frond. 2: 33. t. 10. f. 13, 1788. 



One to several cups springing from an irregularly elliptical or sub- 

 globose sclerotium buried in the ground ; sclerotiuni externally 

 black, wrinkled, 0.5 mm. -3 cm. in diameter, interior white; cup stipi- 

 tate, fleshy, thin, first closed subglobose or pear-shaped, expanding 

 to funnel-shaped, finally becoming quite flattened, whole of a bright 

 brown or tan color; margin entire, thin, erect; hymenium even, 1.5 

 cm. in diameter ; exterior and stipe glabrous with stipe tomentose at 

 base, long, tapering downward, flexuous, slender, brown, 3 cm. or 

 more long; spores elliptical, obtuse, sinooth, hyaline, 2 small gut- 

 tulae, 11-15x5-6 mic. ; paraphyses septate, slightly thickened. 



Grows in patches a foot in diameter sometimes, on the ground in 

 moist woods, where Anemone nemorosa is very abundant. Sclerotia 

 often are found attached to the roots of Anemone; Ramsey, May 

 1899, 1903, Freeman 303; Hennepin, April & May 1903, Nelson; 

 Hennepin, May 1904, Freeman; Hennepin, May 1906, Hone 799; 

 Flennepin, May 1907, Holway; Hennepin, ]\Iay 1907, Hone 810, 

 May 1908, Hone 1012, 2005. 



Exsiccati : Roumeguere, Fungi Gall. 3337 ; Sydow, }^Iycoth. 

 March. 76; Plates: Tulasne, Sel. Fimg. Carp. 3. -tab. 22. fig. 1-4, 

 Gill. Discom. Franc, pi. 72; Sow. Eng. Fung. i. pi. 63; Brefeld, 

 Bot. Untersuch. 4. taf. 8; Boudier, Icones ^ilycol. 3. pi. 477. 



6. RUTSTROEMIA KARSTEN. 



Cups solitary, small, stipitate, waxy, funnel-shaped ; exterior 

 scurvy, dark ; stipe long, slender, terete ; spores narrowly-fusiform, 

 smooth, hyaline, with many guttulae at maturity stalked. 



I. Rutstroemia firma (Pers.) Karst. Myc. fenn. 1:108. 1871. 



Pcziza firma Pers. Syn. Meth. Fung. 658. 1801. 



Scattered, stipitate. firm, funnel-shaped ; margin incurved, entire ; 

 hymenium deep brown when dry, 7 mm. in diameter ; exterior and 

 stipe wrinkled, scurvy, lighter brown, stipe often blackish-brown, 

 very long, slender, straight, attenuated downwards, 1-3 cm. long, 

 very variable in length; spores narrowly fusiform, acute, uniseriate, 

 hyaline, continuous, straight or curved, with 2-5 guttulae, 20- 

 24 x 4-6 mic. ; paraphyses filiform slender. 



Growing on wood ( ?) ; Ramsey, Aug. 1893. Sheldon 5618. 



A few spores were found with a delicate thread at each end, one 



