98 FIELD COLUMBIAN MUSEUM BOTANY, VOL. i. 



I. clavata Ditm. 



On dead sticks on ground, June, 1893 (Nuttall, mo). 



CERATIUM A. & S. 



C. hydnoides (Jacq.) Alb. & Schw. 



On rotten log, June 10, 1893 (Nuttall, 976). 



SPOROCYBE Fr. 



S. Rhois (B. & C.) Sacc. 



On Rhus copallina, March 24, 1894, spores 7. 5 x 2 to 2.5 /*. 

 On Rhus hirta, March 28, 1894, spores 10 x 2.5/1 (Nuttall, 1430). 



S.Azaleae (Peck) Sacc. 



On capsules of Rhododendron maximum, Dec. 12, 1893. Conidia 

 varying from globular through elliptical to cylindrical, dark brown T 

 outer coat easily ruptured, 10x10, 8x5, 12x5, 15x7.5^ (Nuttall, 

 1307)- 



TUBERCULARIACE^:. 



TUBERCULARIA Tode. 

 T. VULGARIS Tode. 



On twigs, Feb. 23, 1893. QnRobinia Pseudacacia, Dec. i, 1893. 

 On Aralia spinosa, Dec. 13, 1893. On Sambucus pubens. On Acer 

 Negundo, April 20, 1894 (Nuttall, 942). On limbs of dead Rhus 

 hirta, Monongalia Co., near Morgantown, 1891 {MillspaugK). 



T. hainata E. & E., Proc. Phila. Acad., 1894, 386. 



TYPE HABITAT: On dead limbs of Celtis ocddentalis. Feb. 2, 

 1894 (Nuttall, discov. 1357, 313)- 



Depressed hemispherical, umbonate, soon becoming black, .5 

 to 1.5 mm. diameter, Conidia oblong, slightly curved, hyaline, 5 

 to 8x1.5 to 2 p. on slender simple sporophores 3010 40 // long, 

 incurved or involute at the tips. 



T. - - sp. 



On Asimina triloba, Feb. 22, 1894. Flesh colored spores 18 to 

 22x3/1 (Nuttall, 1391, 361). 



T. - sp. 



Conidia of Nectria verrucosa. On dead twigs Morus rubra July 

 25, 1895 (Nuttall, 1827, 715). 



T. Sambuci Corda. 



On Sambucus pubens, Feb. 26, 1894 (Nuttall, 1409). 



T. Celastri Schw. 



On Celastrus scandens, April 25, 1895. Spores 5 to 6x2 // (Nutt- 

 all, 1811). 



DENDRODOCHIUM Bon. 



D. affine Sacc. 



On bark wet dead stumps, Oct. 24, 1893 (Nuttall, 1229, 174)- 



