316 NORTH AMERICAN FLORA [VoLuME 7 
urediniospores globoid, 19-23 by 20-26 »; wall cinnamon-brown, 1.5-3 4 thick, very finely 
and inconspicuously verrucose, appearing smooth when wet, the pores 2, occasionally 3, 
equatorial. 
III. Telia chiefly hypophyllous, scattered or sometimes forming lines, oblong or linear, 
0.5-1 mm. long, early naked, blackish-brown, ruptured epidermis rather inconspicuous; 
teliospores ellipsoid or oblong, 16-22 by 28-42 y», rounded or attenuate above, obtuse or slightly 
narrowed below, slightly constricted at septum; wall dark chestnut-brown above, paler below 
and in the attenuate apex, 1.5-2.5 4 thick, much thicker above, 6-12 u, smooth; pedicel 
slightly tinted or colorless, one and a half times length of spore or less. 
On PoackaE: . 
Capriola dactylon (L..) Kuntze (Cynodon dactylon Pers.), Arizona, California, Florida, Texas; 
Guatemala; Panama; Porto Rico. 
TYPE LOCALITY: St. Romain-sur-Vienne, France, on Cynodon Dactylon. 
DistripuTion: Florida to southern California, and southward through the West Indies, and 
Central America; also in the warmer parts of Europe, Asia, Africa, and Japan. 
Exsiccati: Barth. N. Am. Ured. 1646, 2143. 
60. Dicaeoma Fraxini (Schw.) Arth. Résult. Sci. Congr. Bot. 
Vienne 344. 1906. 
Aecidium Fraxini Muhl. Cat. 107; hyponym. 1813. 
Aecidium Fraxini Schw. Schr. Nat. Ges. Leipzig 1:66. 1822. 
Caeoma fraxinatum Link, in Willd. Sp. Pl 62:62. 1825. 
Caeoma (Roestelia) Fraxinites Schw. Trans. Am. Phil. Soc. II. 4: 294. 1832. 
Uredo peridermiospora Ellis & Tracy, Jour. Myc. 6:77. 1890. 
Puccinia sparganioides Ellis & Barth. Erythea 4:2. 1896. 
Puccinia peridermiospora Arth. Science II. 10: 565. 1899. 
Puccinia fraxinata Arth. Bot. Gaz. 34:6. 1902. Not P. Fraxini Kom, 1898. 
, O. Pycnia epiphyllous, in crowded groups 2-3 mm. in diameter, on circular discolored 
areas, honey-yellow, becoming brownish, globose in vertical section, 100-135 « broad; ostiolar 
filaments 50~75 » long. 
I. Aecia chiefly hypophyllous, sometimes petiolicolous and fructicolous, in crowded cir- 
cular groups 3-8 mm. in diameter, cylindric, 0.3-0.5 mm. broad by 0.6-1 mm. high; peridium 
yellowish, margin entire or irregularly lacerate, only slightly recurved; peridial cells oblong or 
cylindric, 21-29 by 35-58 y, strongly imbricate, the outer wall thick, 7-13 u, smooth, striate, 
the inner wall thinner, 3-7 », conspicuously verrucose; aeciospores globoid, ellipsoid, or ovoid, 
21-27 by 26-35 y; wall colorless, 2-3 « thick, much thicker above, 7-13 », very finely and closely 
verrucose. 
ON OLEACEAE: 
Forestiera phillyreoides Torr., Nuevo Le6n. 
Forestiera porulosa (Michx.) Poir. (Adelia porulosa Michx.), Florida. 
Fraxinus americana 1,., Colorado, District of Columbia, Iowa, Massachusetts, Missouri, 
New York, Pennsylvania, Wisconsin. 
Fraxinus campestris Britton, Montana, Nebraska. 
Fraxinus caroliniana Mill., Florida. 
Fraxinus nigra Marsh. (F. sembucifolia Lam.), Massachusetts, Wisconsin. . 
Fraxinus pennsylvanica Marsh (F. pubescens Lam., F. lanceolata Borkh., F. viridis Michx.), 
Delaware, Iowa, Kansas, Louisiana, Mary!and, Massachusetts, Minnesota, Missouri, 
Nebraska, New York, North Dakota, Pennsylvania, South Dakota, Vermont. 
Fraxinus profunda Bush, Indiana. 
Fraxinus quadrangulate Michx., Illinois. 
II. Uredinia hypophyllous, on the smooth surface, supercostal, arising from the hard 
tissues, crowded and often confluent, ellipsoid or oblong-linear, 0.5-2 mm. long, becoming 
naked by a longitudinal slit, ruptured epidermis conspicuous, pulverulent, pale-yellowish; 
urediniospores obovoid or ellipsoid, 18-29 by 27-48 u; wall colorless, 1.5—3 » thick, much thicker 
above, 7-10 uw, rather sparsely and prominently verrucose-echinulate, the pores inconspicuous, 
4, equatorial. 
III. Telia chiefly hypophyllous, crowded and often confluent, elongate on sheaths and 
culms, oblong-linear, 1-3 mm. long, prominent, early naked, compact, pulvinate, blackish- 
brown, ruptured epidermis attached in shreds or disappearing; teliospores oblong or ellipsoid, 
16-24 by 35-62 », rounded at both ends or obtuse above, slightly constricted at septum; wall 
chocolate-brown, about 1.5 4 thick, thicker at apex, 5-7 », smooth; pedicel pale-yellow or 
golden, persistent, once to twice length of spore. 
