Part 5, 1920] AECIDIACEAE 337 
Triticum polonicum I,., Manitoba, 
Triticum Spelta L,., Minnesota, Missouri, Oklahoma, Texas. 
TYPE LOCALITY: France, on Clematis vitalba. 
Disrripurion: Widely and abundantly distributed throughout the temperate region of North 
America, and less abundantly both northward and southward; also in Europe, Asia, and Australia; 
coextensive with the cultivation of wheat. 
ILLustrations: Beitr. Krypt. Schweiz 2?: f. 254, 255, 257a, b, c; McAlpine, Rusts Austr. pl. 1, 
f. 3, 6, 10, pl. 3, f. 25; Grove, Brit. Rust Fungi f. 200, 201, 213, 214. 
Exsiccati: Barth. Fungi Columb. 2402, 2405, 2462, 2567, 2675, 3073, 3074, 3165, 3303, 3348, 
3465, 3469, 3470, 3574, 3650, 3673, 3739, 3740, 3745, 3746, 3832, 3851, 3852, 4056, 4062, 4347, 
4348, 4351, 4354, 4364, 4375, 4401, 4451, 4457, 4458, 4750, 4846, 4950, 4951, 5049, 5076, 5077; 
Barth. N. Am. Ured. 263, 268, 269, 270, 416, 417, 440, 526, 576, 628, 649, 666, 707, 870, 871, 904, 
922, 932, 952, 1003, 1023, 1024, 1101, 1128, 1144, 1177, 1178, 1201, 1229, 1230, 1231, 1327, 1328, 1330, 
1339, 1341, 1357, 1424, 1425, 1474, 1475, 1519, 1520, 1521, 1572, 1573, 1630, 1631, 1640, 1670, 
1746, 1747, 1751, 1830, 1836, 1902, 1929, 1930, 2029, 2030, 2031, 2032, 2074, 2131, 2132, 2133, 2134, 
2170, 2171; Brenckle, Fungi Dak. 58, 104, 109, 113, 154, 185, 185a, 339, 345; Clements, Crypt. 
Form. Colo. 137, 151, 312, 313, 316, 323, 592; Ellis, N. Am. Fungi 227, 1003a, 1005, 1423, 1471; 
Ellis & Ev. N. Am. Fungi 1842, 2213, 2214, 3347, 3348, 3480, 3575; Ellis & Ev. Fungi Columb. 
61a, b, 193, 490, 1901, 1390, 1474, 1639, 1866, 1969, 2158; Garrett, Fungi Utah. 76, 126, 152, 156, 
182, 218, 230; D. Griff. W. Am. Fungi 268, 268a, bis (in part), 276, 289, 289a, b, 292, 293, 318, 
355, 3554, 366, 367; Kellerm. Ohio Fungi 61; Rab.-Wint. Fungi Eur. 33226, 3420, 3421¢; Rab.-Wint.- 
Paz. Fungi Eur. 3836; Rav., Fungi Car. 1: 94; Sydow, Ured. 899, 1079, 1343, 1380, 1708, 1709, 
1766, 1767, 1905, 1935, 2305, 2315, 2434; Thiimen, Myc. Univ. 1221; Vesterg. Micr. Rar. Sel. 1002. 
89. Dicaeoma Impatientis (Schw.) Arth. Proc. Ind. Acad. Sci. 1903: 
148. 1904. 
Aecidium Impatientis Schw. Schr. Nat. Ges. Leipzig 1:67. 1822. 
Uredo Schweinitziana Spreng. Syst. Veg. 41: 571. 1827 
Caeoma (Aecidium) imp Schw. Trans. Am. Phil, Soe. II. 4: 293. 1832. 
Aecidium (Caeoma) impatientatum Schw. Trans. Am. Phil, Soc. II. 4: 309. 1832. 
Puccinia Impatientis Arth. Bot. Gaz. 35:19. 1903. 
Puccinia Impatienti-Elymi Arth.; Kleb. Wirtsw. Rostp. 292, 1904. 
Puccinia perminuta Arth. Bull. Torrey Club 34: 584. 1907. 
Puccinia Elymi-Impatientis J. J. Davis, Trans. Wis. Acad. 19: 677. 1919. 
QO. Pycnia amphigenous, in small crowded groups, on discolored spots, honey-yellow 
becoming blackish, globose in vertical section, 50-80 yw in diameter; ostiolar filaments 30-55 
long. 
I. Aecia hypophyllous and caulicolous in circular or elliptic groups 5-10 mm. or more 
across, on larger, and more or less hypertrophied pale spots, cupulate, 0.3-0.4 mm. in diameter; 
peridium yellowish, the margin recurved and finely erose; peridial cells oblong or quadratish, 
18-21 by 24-34 u, the outer wall smooth, 5—9 » thick, striate, the inner wall coarsely verrucose, 
thinner, 2-3 4; aeciospores angularly globoid or ellipsoid, 16-21 by 19-24 u; wall pale-yellow or 
colorless, thin, about 1.5 4, moderately verrucose with occasional coarse, deciduous tubercles. 
On BaLSAMINACEAE: . 
Impatiens biflora Walt. (I. fulva Nutt., I. maculata Muhl.), Arkansas, Indiana, Michigan, 
Nebraska, New Jersey, New York, North Carolina, North Dakota, Ohio, Pennsyl- 
vania, South Dakota, Vermont; Manitoba, Ontario, Quebec. act . 
Impatiens pallida Nutt. (J. aurea S. Wats.), Connecticut, Delaware, District of Columbia, 
Indiana, Iowa, Kansas, Maryland, Michigan, Missouri, Nebraska, New York, Penn- 
sylvania, South Dakota, Wisconsin, West Virginia; Ontario. 
II. Uredinia chiefly epiphyllous, scattered, elliptic or oblong, small, 0.3-0.5 mm. long, 
yellowish-brown, rather tardily naked, ruptured epidermis evident; paraphyses rare, clavate or 
capitate, 9~13 by 16-35 w, the wall colorless, thin, 1 4, smooth; urediniospores globoid or 
ellipsoid, 13-19 by 16-24 w; wall moderately thin, 1-1.5 yu, pale-yellow, finely and closely echin- 
ulate, the pores 4-6, scattered, indistinct. 
III. Telia hypophyllous, scattered, or crowded, oblong, 0.3-1 mm. long, grayish-black, 
long covered by the epidermis, surrounded by a thin layer of brownish hyphal stroma; telio- 
spores clavate-oblong or cylindric, 10-18 by 26-45 uw, rounded or truncate above, usually nar- 
rowed below, slightly or not constricted at septum; wall thin, 1 4 or less, chestnut-brown, 
darker and slightly thickened above, 2~7 4, smooth; pedicel very short, colored like the apex. 
On PoAcEAE: 
Agrostis alba I,., New York. : 
Agrostis hyemalis (Walt.) B.S.P., Delaware, Maine, New York. . ; 
Agrostis perennans (Walt.) Tuckerm. (A. intermedia Scribn., A. Scribneriana Nash), Del- 
aware, District of Columbia, Indiana, Kentucky, Maine, Missouri, Ohio, Pennsyl- 
vania, Tennessee, West Virginia, Wisconsin; Nova Scotia. 
Agrostis sp., North Carolina, Texas. 
