Part 4, 1920] AECIDIACEAE 281 
ON VIOLACEAE: 
Viola erviocarpa Schw. (V. scabriuscula Schw.), Wisconsin. 
Viola fimbriatula Smith, Massachusetts. 
Viola lanceolata I,., Delaware, New York. 
Viola Nuttallii Pursh, Colorado, Kansas. 
Viola papilionacea Pursh (V. palmata cucullata A. Gray, V. pratincola Greene), Illinois, 
Indiana, Iowa, Kansas, Nebraska, New York, North Dakota, South Dakota. 
Viola papilionacea X sororia Brainerd, New York. 
Viola pedata L., Alabama, Connecticut, Iowa, Maryland, Wisconsin. 
Viola pedatifida G. Don (V. delphinifolia Nutt.), lowa, Kansas, New Mexico. 
Viola primulifolia L., Maryland. 
Viola rostrata Pursh, New York, West Virginia. 
Viola sagittata Ait., District of Columbia, New Jersey, Virginia. 
Viola septentrionalis. Greene, Maine. 
Viola. sororia Willd. (V. cuspidata Greene), West Virginia. 
Viola tricolor L,., Kansas, Nebraska. 
II. Uredinia hypophyllous, scattered, oval or oblong, 0.2-0.5 mm. long, early naked, 
cinnamon-brown, somewhat pulverulent, ruptured epidermis inconspicuous; urediniospores 
globoid or broadly ellipsoid, 18-21 by 19-23 u; wall golden- or light cinnamon-brown, thick, 
2.5-3.5 u, finely and closely verrucose, the pores 3-4, equatorial. 
III. Telia hypophyllous, numerous, scattered, occasionally confluent, ovate or oblong, 
small, 0.2-0.5 mm. long, early naked, pulvinate, dark chocolate-brown, ruptured epidermis 
somewhat noticeable; teliospores ellipsoid to obovoid, 18-23 by 35—46 wu, rounded or some- 
times truncate above, rounded or narrowed below; wall chestnut-brown, 1.5-2.5 » thick, 
thicker at apex, 5-10 », smooth; pedicel light-yellow, once to once and a half length of spore. 
This species is not distinguishable morphologically from Nigredo pedatata (Schw.) Arth. 
except in the possession of two-celled teliospores. The two forms are separately maintained 
for convenience, but should eventually be united under one name. 
On PoacEaE: 
Andropogon emersus Fourn. (A. perforatus Trin., Amphilophis emersus Nash), Jalisco. 
Andropogon furcatus Muhl. (A. provincialis furcatus Hack., 4. provincialis Am. Auth. not 
Lam.), Colorado, Iowa, Michigan, Mississippi, New Mexico, New York, North Dakota. 
Andropogon glomeratus (Walt.) B.S.P. (A. corymbosus Nash), New Jersey, North Carolina. 
Andropogon Liebmanni Hack., Jalisco. 
Andropogon scoparius Michx. (Schizachyrium scoparium Nash), Colorado, Connecticut. 
Delaware, Indiana, Iowa, Kansas, Maryland, Massachusetts, Mississippi, Missouri, 
Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North 
Dakota, Oklahoma, South Dakota, West Virginia. 
Andropogon semiberbis (Nees) Kunth (Schizachyrium semiberbe Nees), Florida. 
Andropogon virginicus L., New Jersey, Virginia. 
Type LocaLiry: Albany, New York, on “ Viola cucullata,”” now determined as V. papilionacea. 
Distripurtron: Massachusetts to North Dakota and eastern Colorado, and southward to Florida 
and southern Mexico. . 
ILLUSTRATIONS: Bull. Lab. Nat. Hist. Univ. Iowa 5: gl. 1, f. 38a, 5. 
Exsiceatr: Arth. & Holway, Ured. Exs. Ic. 38¢, b; Barth. Fungi Columb. 2760, 3576, 3974; 
Barth. N. Am. Ured. 204, 276, 435, 939, 2242; Brenckle, Fungi Dak. 40, 151; Carleton, Ured. Am. 
28; Ellis & Ev. Fungi Columb. 1908, 2103; Sydow, Ured. 1165 in part, 1184, 2142, 2366; Thiim. Myc. 
Univ. 1336. 
7. Dicaeoma Andropogonis (Schw.) Kuntze, Rev. Gen. 3°: 467. 
1898. 
Aecidium Pentastemonis Schw. Schr. Nat. Ges. Leipzig 1:68. 1822. Not Dicaeoma Pentastemonum 
Kuntze, 1898. . 
Caeoma (Aecidium) pentstemoniatum Schw. Trans. Am. Phil. Soc. IT. 4: 292. 1832. 
Puccinia Andropogi Schw. Trans. Am. Phil. Soc. IT. 4: 295. 1832. 
Aecidium (Caeoma) pentstemoniatum Schw. Trans. Am. Phil. Soc. II. 4: 309, 1832. 
‘Aecidium pustulatum Curtis; Peck, Ann. Rep. N. Y. State Mus. 23: 60. 1873. 
‘Aecidium Gerardiae Peck, Ann. Rep. N. Y. State Mus. 25:92. 1873. 
‘Aecidium Chelonis W. Gerard, Bull. Torrey Club 5: 40. 1874. 
‘Aecidium Hamiltonice Thiim. Bull. Torrey Club 6: 350. 1879. 
Aecidium micropunctum Ellis & Ev. Jour. Myc. 6: 119. 1891. 
Aecidium Palmeri F. W. Anderson, Jour. Myc. 6: 122. 1891. 
Puccinia pustulata Arth. Jour. Myc. 10: 18, 1904. 
Dicaeoma pustulatum Arth. Proc. Ind. Acad. Sci. 1903: 150. 1904. 
Allodus Palmeri Arth. Résult. Sci. Congr. Bot. Vienne 345. 1906. 
O. Pycnia amphigenous, abundant, in circular or indefinite groups, honey-yellow, be- 
coming chestnut-brown, punctiform, partly or wholly immersed, flattened-globoid in vertical 
section, 65-120 » in diameter; ostiolar filaments 25-45 u long. 
