106 NORTH AMERICAN FLORA [VoLuME 7 
2. Pucciniastrum Hydrangeae (B. & C.) Arth. Résult. Sci. Congr. Bot. 
Vienne 337. 1906. 
Uredo Hydrangeae B. & C.; Seym. Bot. Gaz. 9: 191. 1884. 
Melampsora Hydrangeae Farl.; Farl, & Seym. Host Index N. Am. Fungi 200. 1891. 
Coleosporium Hydrangeae Snyder, Proc. Ind. Acad. Sci. 1896: 218. 1897. 
Thecopsora Hydrangeae Magn.; Vesterg. Micr. Rar. Sel. 572. 1902. 
O and I. Pycnia and aecia unknown. 
II. Uredinia hypophylious, scattered, round, small, 0.1-0.2 mm. across, dark-yellow 
fading to pale-yellow, ruptured epidermis, inconspicuous, dehiscent by a central pore; 
peridium hemispherical, delicate, cells small, cuboid, walls uniformly thin, 1-1.5 », ostiolar 
cells slightly or not elongate, 10-16 4, barely pointed, walls thin, smooth ; urediniospores 
broadly elliptical or obovate, 12-18 by 16-24; wall nearly colorless, thin, 1-1.5+, sparsely 
and strongly echinulate. 
III. Telia amphigenous, or chiefly epiphyllous, effused, or confluent into small angular 
groups, 0.3-0.8 mm. across, not raised, reddish-brown ; teliospores forming a single layer 
within the epidermal cells, or sometimes between the epidermis and mesophyl, globoid, 
22-28 by 24-28 #; wall dark cinnamon-brown, uniformly thin, 1.5-2 y. 
ON HyYDRANGEACEAE : 
Hydrangea arborescens I,., District of Columbia, Illinois, Indiana, North Carolina, Vir- 
ginia, West Virginia. 
TYPE LOCALITY : Cobden, Illinois, on Hydrangea arborescens, 
DISTRIBUTION : Illinois and District of Columbia south to North Carolina. 
ExsiccaTi: Rab.-Wint. Fungi Eur. 3631; Ellis & Ev. N. Am. Fungi 1884; Seym. & Earle, 
Econ. Fungi 206; Vesterg. Micr. Rar. Sel. 577. 
3. Pucciniastrum Agrimoniae (Schw.) Tranz. Scripta Bot. Hort. Univ. 
Petrop. 4: 301. 1895. 
Caeoma (Uredo) Agrimoniae Schw. Trans. Am. Phil. Soc. II. 4: 291. 1832. 
Coleosporium ochraceum Bon. Coniom. 20, 1860. 
Uredo Agrimoniae-Eupatoriae Wint. in Rab. Krypt. Fl. 1: 252. 1881. 
Thecopsora Agrimoniae Dietel, Hedwigia 29: 153. 1890. 
O and I. Pycnia and aecia unknown. 
II. Uredinia hypophyllous, thickly scattered over definite or extended areas, bullate, 
round, small, 0.1-0.2 mm. across, orange-yellow fading to pale-yellow, dehiscent by a central 
pore, somewhat pulverulent, ruptured epidermis inconspicuous ; peridium rather delicate, 
hemispherical, cells small, cuboid, walls thin, 2”, thicker below toward the orificg, smooth, 
ostiolar cells larger, irregular oblong, 20-25 » high, thick-walled, 3-5», minutely echinulate 
or smooth above; urediniospores broadly obovate, or globoid, 12-17 by 15-24; wall color- 
less, thin, 1#, minutely echinulate; contents orange-yellow fading to pale-yellow. 
Tll. Telia hypophyllous, diffused, forming irregular patches, indehiscent; teliospores 
beneath the epidermal cells, intercellular, oblong or cuneate, 15-30 by 18-30 » ; wall smooth, 
brownish-yellow ; contents colorless. 
ON ROSACEAE: . . : . 
Agrimonia Britioniana Bickn., Maine, Nebraska, North Dakota, Pennsylvania, Vermont. 
Agrimonia hirsuta (Muhl.) Bickn. (4. upatoria Walt.), Illinois, lowa, Minnesota, Ne- 
braska, New York, Vermont. 
Agrimonia incisa T. & G., North Carolina. 
Agrimonia mollis (YT, & G.) Britton, Indiana, Iowa, Massachusetts, Missouri, New York, 
Ohio, West Virginia. ea ; 
Agrimonia parviflora Sol., Alabama, Ilinois, Indiana, New Jersey, New York, Ohio, 
Pennsylvania, West Virginia. : ; 
Agrimonia pumila Muhl., Florida, Missouri. 
Agrimonia sp., New Mexico; Mexico (state). 
TypE LOCALITY: North Carolina, on Agrimonia sp. : 
DISTRIBUTION : Vermont to North Dakota southward to Florida and Mexico; also in South 
America, Europe and Asia. 
ILLUSTRATION : Bot. Mag. Tokyo 12: p12, f. 16. ; ; 
Exsiccati: Ellis, N. Am. Fungi 274; Kellerm. Ohio Fungi 116, 777; Ellis & Ev. Fungi 
Columb. 760. 
