382 NORTH AMERICAN FLORA [VoLUME 7 
below, slightly constricted at septum; wall cinnamon-brown below, chestnut-brown above, 
rather thin, 1-2 », thickened at apex, 5-10 », smooth; pedicel pale-yellow or colorless, about 
half length of spore. 
This species is composed of quite distinct races, partly made evident by cultures and partly 
indicated by slight morphological characters. ‘The form on Persicaria with long covered telia 
has aecia on one group of Geraniums while the form on Bilderdykia (and Gonopyrum?) has aecia 
on another group of Geraniums. The form on Tovara virginiana is distinguished by the sub- 
equatorial pores of the urediniospores, the aecial relations not being known. 
On POLYGONACEAE:; 
Bilderdykia Convolvulus (L,.) Dumort. (Polygonum Convolvulus L.., Tiniaria Convolvulus Webb 
Mogq.), Delaware, Illinois, Indiana, Iowa, Kansas, Maryland, Michigan, Minnesota, 
Missouri, Nebraska; New Jersey, New York, Ohio, Pennsylvania, South Dakota, 
West Virginia, Wisconsin; Ontario. 
Bilderdykia cristata (Engelm. "& Gray) Greene (Polygonum cristatum Engelm. & Gray, 
Tiniaria cristata Small), Mississippi, North Carolina, Pennsylvania, Texas, Virginia. 
Bilderdykia scandens (1,.) Greene (Polygonum scandens L., Tiniaria scandens Smal), 
Indiana, Kentucky, Nebraska, New York, Virginia, West Virginia, Wisconsin. 
Gonopyrum articulatum (L.) Fisch. & Mey. (Polygonella articulata Meissn.), Florida. 
Persicaria coccinea (Muhl.) Greene (Polygonum amphibium Hook. not L.), Maine, Utah, 
Wisconsin; Ontario. 
Persicaria Hartwrightiit (A, Gray) Greene (Polygonum Heartwrightii A. Gray), California, 
Colorado, Connecticut, Idaho, Illinois, Iowa, Michigan, Minnesota, Montana, Ne- 
braska, New York, North Dakota, Ohio, Oklahoma, Oregon, South Dakota, Utah, 
Vermont, Washington, Wisconsin, Wyoming; Alberta, British Columbia; Manitoba, 
Nova Scotia. 
Persicaria hirsuta (Walt.) Small (Polygonum hirsutum Walt.), Florida. 
Persicaria hydropiper (L.) Opiz (Polygonum hydropiper L.), South Carolina. 
Persicaria hydropiperoides (Michx.) Small (Polygonum hydropiperoides Michx.), Cali- 
fornia, Florida, Illinois, Indiana, Mississippi, New York, West Virginia; Ontario. 
Persicaria incarnata (Ell.) Smail (Polygonum incarnatum EU. 5, California, New York. 
baba eae lapathifolia (L.) S. F. Gray (Polygonum lapathifolia L.), Arkansas, Indiana; 
ntario. 
Persicaria Muhlenbergiit (Meissn.) Small (Polygonum Muhlenbergii S. Wats., P. emersum 
Britton), California, Colorado, Idaho, Indiana, Iowa, Kansas, Maine, Maryland, 
Massachusetts, Michigan, Minnesota, Montana, Nebraska, New York, North Dakota, 
Ohio, Oregon, Pennsylvania, South Dakota, Vermont, Washington. Wisconsin, Wyo- 
ming; Mexico (state); Ontario, Quebec. 
Persicaria pennsylvanice (L.) Small (Polygonum pennsyluanicum I,.), Alabama, Arkansas, 
Delaware, Florida, Ulinois, Indiana, Kentucky, Louisiana, Mississippi, New York, 
South Carolina, Tennessee, Texas; Quebec. 
Persicaria Persicaria (L,.) Small (Polygonum Persicaria L.), Louisiana, Oregon, Pennsylvania. 
Persicaria portoricensis (Bertero) Small (Polygonum portoricensis Bertero), Texas; Porto 
Rico. 
Persicaria punctata (Ell.) Small (Polygonum punctatum Ell, P. acre H.B.K.), Alabama, 
Arkansas, California, Florida, Illinois, Indiana, Kansas, Kentucky, Michigan, Missouri, 
New York, Ohio, South Carolina, Texas, West Virginia; Mexico (state); Costa Rica; 
Guatemala: Cuba; Haiti; Bermuda; Porto Rico. 
Persicaria setacea (Baldw.) Small (Polygonum setaceum Baldw.), Louiisiana, Misouris. 
Tovara virginiana (L.) Raf. (Polygonum virginianum L.), Connecticut, Illinois, Louisiana, 
Massachusetts, Missouri, New York, North Carolina, Ohio, West Virginia. 
‘Type Locality: Europe, on Polygonum amphibium var. terrestre. 
DISTRIBUTION: Throughout North America; also in South America, Europe, Africa, India, 
China, and Japan. 
InLustrations: Holway, N. Am. Ured. 1: pl. 13, f. 55b; Beitr. Krypt. Schweiz 22: f. 220, 221; 
Krypt.-fl. Brand. Pilze 3: f. B132, 133; Grove, Brit. Rust Fungi f. 175, 176; Corda, Ic. Fung. 2: ol. 
8, 7.20; 4: pl. 4, f. 41, pl. 5, f. 62. 
Exsiccatt: Barth. Fungi Columb. 2268, 2395, 2463, 2672, 2774, 2799, 2861, 2862, 2863, 2965, 
2966, 3176, 3261, 3366, 3567, 3568, 3569, 3570, 3766, 3767, 3961, 3962, 4159, 4368, 4572, 4593, 4762, 
4861, 4994: Barth. N. Am, Ured. 165, 361, 464, 465, 564, 656, 657, 762, 861, 960, 961, 992, 1069, 
1070, 1167, 1266, 1363, 1364, 1467, 1565, 1566, 1665, 1698, 1772, 1860, 1861, 1963, 2054, 2055, 
2158, 2159, 2259, 2260; Brenckle, Fungi Dak. 41; Clements, Crypt. "Form. Colo. 574; Ellis, N . Am. 
Fungi 221, 259, 1455; Ellis & Ev. Fungi Columb. 491, 751, 762, 1863, 2157; Kellerm. Ohio Fungi 
92, 93, 115, 175; Rab.-Paz. Fungi Eur. 4130a, b; Rav. Fungi Am. 43, 274; Rav. Fungi Car. 4: 98; 
Seym. & Earle, "Econ. Fungi 371, 373, 374; Sydow, Ured. 1732, 2532, 
163. Dicaeoma Polygoni-vivipari (H. Dietr.) Arthur. 
Puccinia Polygoni-vivipari H. Dietr.; P. Karst. Not. Sallsk. Faun. Fl. Fenn. 8: 221. 1869. 
Puccinia uniformis Pammel & Hume; Hume, Proc. Davenport Acad. 7: 250. 1899. 
O. Pycnia not seen. 
I. Aecia hypophyllous and caulicolous, in small circular or irregular groups 1-4 mm. in 
diameter, often following the veins, on pale somewhat thickened spots, hemispheric, rather 
large, about 0.1 mm. in diameter, surrounded by persistent host-tissue, opening at last by a 
