284 Patterson : New Species of Fungi 



On dead branches of Rhus glabra, Ainsworth, Nebr., May 14, 

 1898, J. M. Bates, no. 814. 



Aspergillus umbrinus 



Sterile hyphae creeping, branched, septate, hyaline, fertile hy- 

 phae erect, simple, septate, hyaline or slightly colored, 150-300 

 x 6-8 /i, apex inflated, sub-globose, 15-24 fz, generally 18 fit : 

 sterigmata club-shaped, 12 x 6 fit: conidia in chains, bright um- 

 ber colored, verrucose, 6—9 (i diameter. 



The description is for the typical form from which there are 

 extreme variations. Fertile hyphae may be only 1 8 /i in length, 

 having an apex but slightly and irregularly enlarged, which may 

 bear but 3-6 sterigmata, which are sometimes flask-shaped, 9-18 

 X 6-8 fi y and occasionally septate. When cultivated upon steril- 

 ized potato the species grows with great luxuriance. Measurements 

 of conidia and hyphae remain practically the same, but the vesicu- 

 lose portion is more nearly spherical and ranges from 30-45 //in 

 diameter, with sterigmata averaging 1 5 t a. 



Upon such cultures in about five weeks there have developed 

 numerous snow-white sclerotia, 1-5 mm. in height and 1-3 mm. 

 in breadth. 



In Brazil nut, Washington, D. C, February, 1900, E. A. 

 Bessey. 



Sterigmatocystis castanea 



Thinly effused : fertile hyphae erect, simple, continuous, hyaline, 

 400-5 50 X 12 fit: apex inflated to a spherical head, 30-40 fit, from 

 which radiate clavulate basidia 16 ji in length: sterigmata 4, 

 6-7 x 2 /A : conidia in chains of 4 or 5, spherical, verrucose, brown, 



On Persoonia lanceolata, New South Wales, March, 1898, J. 

 H. Maiden. 



Cladosporium aeruginosum 



Tufts epiphyllous, verdigris green, densely fasciculate, distinct, 

 upon light-colored arid spots : hyphae simple, septate, nodulose, 

 very light green, 45-90x3-3.5 fit : conidia lateral and terminal, 

 in chains of 5 or more, almost hyaline, generally oblong and con- 

 tinuous, sometimes oblong-elliptical and once or twice septate, 

 5-12x2-2.5 fi. 



On living leaves of Oka fragrans affected by Gloeosporium 

 oleae, greenhouse, Department of Agriculture, January, 1900, F. 

 W. P. 



