372 NORTH AMERICAN FLORA [VoLumME 7 
tN Locality: France, on Veratrum album. 
_ , DISTRIBUTION: Western North America, and New Hampshire to West Virginia, in mountainous 
districts; also in Europe. 
ILLustrations: Holway, N. Am. Ured. 1: pl. 6, f. 27. 
Exsiccati: Barth. N. Am. Ured. 68, 172, 436, 577, 1477; Ellis & Ev. Fungi Columb. 489; 
oa eae Fungi 1031; Garrett, Fungi Utah. 82, 135, 159; Sydow, Ured. 1386, 1783; Thiam. Myc. 
niv. - 
145. Dicaeoma atropunctum (Peck & Clinton) Kuntze, Rev. Gen. 
33: 468. 1898. 
Puccinia atropuncta Peck & Clinton; Peck, Bot. Gaz. 4:171. 1879. 
Puccinia Zygadeni Trel. Prel. List Wisc. Fungi 25. 1884. 
Uredo Schoenocauli Ellis & Ev. Bull. Torrey Club 22: 438. 1895. 
Puccinia Melanthi Bub&k, Oesterr. Bot. Zeits. 50: 318. 1900. 
O. Pyecnia amphigenous, numerous, in circular groups, punctiform, inconspicuous, im- 
mersed, honey-yellow becoming brownish, globoid, small, 80-110 4 broad by 80-120 » high; 
ostiolar filaments 20-30 » long. 
I. Aecia amphigenous, rather crowded in circular or elliptic groups, short-cylindric, 
0.2-0.4 mm. across; peridium white, the margin erect, lacerate; peridial cells oblong, 10-13 
by 23-32 u, overlapping, the outer wall 3—4 » thick, transversely striate, the inner wall thinner, 
2~3 yw, verrucose; aeciospores globoid or ellipsoid, 16-23 by 19-26 u; wall colorless or nearly 
so, thin, 1», minutely verrucose. 
II. Uredinia amphigenous or only hypophyllous, scattered, many, roundish or oval, 
emall, 0.2-0.6 mm. long, tardily naked, pulverulent, cinnamon-brown, ruptured epidermis 
conspicuous; urediniospores globoid or ellipsoid, 16-22 by 19-26 yw; wall golden-brown, rather 
thin, 1-2 », moderately echinulate, the pores 2, usually superequatorial. 
III. Telia amphigenous or only hypophyllous, scattered, roundish or oval, small, 0.2- 
0.8 mm. long, early naked, conspicuous, compact, becoming pulverulent, blackish, ruptured 
epidermis conspicuous; teliospores oblong or oblong-clavate, 14-22 by 35-56 y, rounded or 
obtuse above, narrowed below, slightly constricted at septum; wall cinnamon-brown, rather 
thin, 1-2 4, greatly thickened and darker-colored at apex, 7-12 4, smooth; pedicel colored, 
about one half as long as spore. 
ON MELANTHACESE: 
Anticlea chloranitha (Richards.) Rydb. (Zygadenus glaucus Nutt.), Iowa, North Dakota, 
Wisconsin. 
Chrosperma muscaetoxicum (Walt.) Kuntze (Amianthium muscaetoxicum A. Gray), Pennsyl- 
vania. 
Schoenocaulon dubium (Michx.) Small (S. gracile A. Gray), Florida. 
Stenanthium gramineum (Ker) Morong, Georgia. 
Veratrum parviforum Michx. (Melanthium parviflorum S. Wats.), North Carolina, Ten- 
nessee, 
Veratrum viride Ait., West Virginia. 
Veratrum Woodii Robbins, Missouri. eee 
Xerophyllum asphodeloides (L.) Nutt., Mississippi. 
Type Locality: Allenton, Missouri, on Veratrum Woodii. : 
DisTRiButTion: From the Atlantic to the plains east of the Rocky mountains; also in Japan. 
ILLustRations: Holway, N. Am. Ured. I: pl. 6, f. 26A, B, C; Oesterr. Bot. Zeits. 50: pl. 9, 
. 10-13. . 
f Exsiccatt: Ellis, N. Am. Fungi 1447; Rab.-Wint. Fungi Eur. 3218; Rab-Wint.-Paz. Fungi Eur. 
3920; Roum. Fungi Gall. 3412. 
146. Dicaeoma grumosum (Sydow & Holway) Arth. Résult. Sci. 
Congr. Bot. Vienne 334. 1906. 
Puccinia grumosa Sydow & Holway; Sydow, Monog. Ured. 1: 641. 1903. 
O. Pycnia chiefly hypophyllous, few, loosely gregarious, inconspicuous, becoming dark- 
brown, globoid or flask-shaped, 95-130 4 in diameter by 90-1204 high; ostiolar filaments 
50-64 pz long. 
I. Aecia chiefly hypophyllous, solitary or gregarious in small irregular groups on yellow 
spots, cupulate, sometimes oval in surface view, 0.3-0.4 mm. in diameter; peridium white, 
the margin reflexed, incised; peridial cells rhomboidal, 18-27 by 25-37 yu, the outer wall thick, 
7-12», transversely striate, the inner wall thinner, 3-6 4, verrucose; aeciospores globoid, 
ellipsoid or angular, 19-23 by 19-28 »; wall pale-yellow, 1-2 u thick, minutely verrucose. 
