Part 5, 1920] AECIDIACEAE 343 
On CYPERACEAE: 
Scirpus microcarpus Presl (S. rubrotinctus Fernald, S. sylvaticus digynus Béck.), California, 
Colorado, Massachusetts, Montana, New York, North Dakota, Oregon, Washington, 
Wyoming; British Columbia, Nova Scotia. 
TYPE Locality: Pasadena, California, on ‘Scirpus sylvaticus.” 
.. , DISTRIBUTION: Western Montana and British Columbia southward to southern California and 
in Nova Scotia, Massachusetts and the adjacent part of New York. 
Exsiccati: Barth. Fungi Columb. 3166, 4967, 5066; Barth. N. Am. Ured. 244, 816, 1026, 1131, 
1132, 1353, 1855, 1953, Ellis, N. Am. Fungi 266; Ellis & Ev. Fungi Columb. 347; D. Griff. W. Am. 
Fungi 348; Sydow, Ured. 1810. 
100. Dicaeoma angustatum (Peck) Kuntze, Rev. Gen. 33: 467. 
1898. 
Puccinia angustata Peck, Bull. Buffato Soc. Nat. Sci. 1:67. 1873. 
Aecidium Lycopi W. Gerard; Peck, Bull. Buffalo Soc. Nat. Sci. 1: 68. 1873. 
O. Pycnia epiphyllous, few, gregarious, usually in small groups 1-2 mm. across, not con- 
spicuous, honey-yellow becoming reddish-brown, somewhat flattened-globoid, 95-115 u in 
diameter by 85-95 » high; ostiolar filaments usually compact, 30-40 u long. 
I. Aecia hypophyllous, gregarious, in annular and more or less crowded groups 1-4 mm. 
across, cupulate, 0.2-0.3 mm. in diameter; peridium delicate, the margin slightly recurved, 
somewhat lacerate; peridial cells rhomboidal, 26-29 wu long, the outer wall rather thick, 7-9 u, 
transversely striate, the inner wall thinner, about 3 4, verrucose; aeciospores globoid, 16-18 by 
19-21 4; wall colorless, 1-1.5 « thick, finely verrucose. 
On LAMIACEAE: 
Koellia virginiana (,.) MacM. (Pycnanthemum lanceolatum Pursh), Indiana. 
Lycopus americanus Muhl. (L. sinuatus Ell.), Indiana, Kansas, Maine, Maryland, Nebraska, 
New Jersey, New York, North Dakota, Wisconsin; Ontario. 
Lycopus rubellus Moench, Ontario. 
Lycopus uniflorus Michx. (L. communis Bickn.), Indiana, Massachusetts, Michigan, New 
York, Wisconsin; New Brunswick. 
gad oer virginicus L,., Alabama, Delaware, Maine, Missouri, New York, Pennyslvania; 
ntario, 
Mentha arvensis L., Nova Scotia. 
Mentha canadensis ., California, Montana, South Dakota; Manitoba. 
Monarda fistulosa ¥,., Nebraska. 
II. Uredinia chiefly hypophyllous, scattered, or often in more or less evident series parallel 
with the veins, oval or oblong, 0.5-0.8 mm. long, rather tardily naked, slightly pulverulent, 
cinnamon-brown, ruptured epidermis noticeable; uwrediniospores broadly ellipsoid or obovoid, 
18-24 by 26-32 »; wall cinnamon-brown, 1.5-2 » thick, moderately echinulate, the pores 2, 
equatorial or superequatorial. 
IH. Telia chiefly hypophyllous, disposed like the uredinia, often confluent end to end, 
oval, oblong or linear, 0.5-1.5 mm. or more long, moderately early naked, without stroma, 
pulvinate, dark chocolate-brown, ruptured epidermis conspicuous; teliospores clavate or ob- 
long-clavate, 14-23 by 42-67 », rounded or truncate above, usually narrowed below; wall 
golden-brown, 1.5-2 » thick, much thicker at apex, 7-16 4, smooth; pedicel concolorous, about 
length of spore. 
On CYPERACEAE: 
Scirpus americanus Pers. (S. pungens Vahl), Nevada. 
Scirpus atrocinctus Fernald, New York. 
Scirpus atrovirens Muhl., Delaware, Illinois, Indiana, Iowa, Kansas, Maine, Michigan, 
Missouri, Nebraska, New York, North Dakota, Ohio, Pennsylvania, South Dakota, 
Virginia, West Virginia, Wisconsin; Ontario, Quebec. 
Scirpus caespitosus I, New York. . . 
Scirpus californicus (C. Meyer) Britton, California, ; ; 
Scirpus cyperinus (L.) Kunth (S. Eriophorum Michx., Eriophorum cyperinum \.), Ala- 
bama, Delaware, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minne- 
sota, Nebraska, New York, Ohio, Pennsylvania, West Virginia, Wisconsin, Virginia; 
Nova Scotia, Ontario, Quebec. . ; 
Scirpus fluviatilis (Torr.) A. Gray, Wisconsin. 
Scirpus georgianus Harper, Delaware. , 
Scirpus microcarpus Presl (S. rubrotinctus Fernald), Manitoba. 
Scirpus pallidus (Britton) Fernald, Arkansas, Nebraska. 
Scirpus pedicellatus Fernald, New York. 
Scirpus polyphylius Vahl, Maryland. 
Scirpus sp., Colorado, Louisiana. . ; 
Type LocaLity: Watkins, New York, on Scirpus Eriophorum. 
