568 NORTH AMERICAN FLORA [VoLuME 7 
On BIGNONTACEAE: 
Pithecoctenium muricatum DC., Costa Rica; Guatemala. 
E LOCALITY: Road to Voledn de Pods, Costa Rica, on Pithecoctenium muricatum, 
DIstRIBuTIon: Central America. 
111. Micropuccinia Elytrariae (P. Henn.) Arthur & Jackson. 
Puccinia Elytrariae P. Henn. Hedwigia 34: 320. 1895. 
O. Pycnia not seen, probably not formed. 
III. Telia hypophyllous, gregarious and closely crowded on discolored spots 4-10 mm. 
across, round, small, 0.1-0.4 mm. in diameter, somewhat tardily naked, compact, somewhat 
pulvinate, chocolate-brown, ruptured epidermis noticeable; teliospores few, ellipsoid or obo- 
void, 14-19 by 22-30 u, rounded above, rounded or narrowed below, not constricted at sep- 
tum; wall cinnamon-brown, 1.5-2.5 » thick, darker and slightly thickened above, 5 », smooth; 
pedicel firm, concolorous with base of spore, often slightly inflated above, once to twice and 
a half length of spore, or deciduous; mesospores predominating, obovoid or ellipsoid, 14-19 
by 18-24 uv, rounded above, usually narrowed below. 
On ACANTHACEAE: 
Elytraria squamosa (Jacq.) Lindau, Costa Rica. 
Elytraria tridentata Vahl, Guerrero, Jalisco, Morelos. 
Elyiraria sp., Guatemala. 
& LOCALITY: Brazil, on Elyiraria crenata. 
DIstRmvtTion: Central Mexico southward into Central America; also in South America. 
ILLUSTRATION: Sydow, Monog. Ured. 1: pl. 15, f. 213. 
112. Micropuccinia rubefaciens (Johans.) Arth. & Jackson; 
Arth. Bull. Torrey Club 48: 41. 1921. 
Puccinia rubefaciens Johans. Bot. Notiser 1886: 174. 1886. 
Dicaeoma rubefaciens Kuntze, Rev. Gen. 33: 470. 1898. 
Dasyspora rubefaciens Arth. Résult. Sci. Congr. Bot. Vienne 347. 1906. 
Leptopuccinia rubefaciens Sydow, Ann. Myc. 20: 121. 1922. 
O. Pycnia unknown, probably not formed. 
III. Telia hypophyllous and caulicolous, solitary or gregarious and more or less confluent 
in groups 1-10 mm. across, on yellowish spots, large, round or elliptic, 1-2 mm. or larger when 
confluent, compact, somewhat pulvinate, tardily naked, blackish-brown, ruptured epidermis 
conspicuous; teliospores oblong or clavate, 16-23 by 38-52 y», rounded or truncate above, 
narrowed below, slightly constricted at septum; wall cinnamon-brown, thin at sides, 1.5-2 p, 
dark chestnut-brown above and greatly thjckened, 10-144, smooth; pedicel colorless, or 
tinted like base of spore, half length of spore or shorter. 
This species is correlated with Dicacoma punctatum (Link) Arth. and Allodus ambigua 
(Alb. & Schw.) Arth. The morphological characters of like stages in the three species are 
similar or identical, and together with the correspondence in hosts doubtless indicate a com- 
mon origin. 
ON RUBIACEAE: 
Galium boreale L. (G. boreale linearifolium Rydb.), Alaska, Colorado, Idaho, Iowa, Montana, 
North Dakota, Oregon, South Dakota, Washington, Wisconsin; Alberta. 
Galium californicum Hook. & Arn., California. 
Tyre Locality: Jemtland, Sweden, on Galium boreale. 
DisTRIBUTION: Southern Wisconsin to Colorado and central California, northwestward nearly 
to Bering Straits, Alaska; also in northern Europe. 
ILLUSTRATIONS: Sydow, Monog. Ured. 1: pl. 13, f. 196; Hedwigia 28: 106. f. 5. 
Exsiccati: Barth. N. Am. Ured. 965, 1368, 1865; Brenckle, Fungi Dak. 16, 244; Ellis, N 
Am. Fungi 1038a; D. Griff. W. Am. Fungi 294; Sydow, Ured. 2275. 
113. Micropuccinia lateritia (Berk. & Curt.) Arth. & Jackson; 
Arth. Bull. Torrey Club 48: 41. 1921. 
Puccinia lateritia Berk. & Curt. Jour. Acad. Phila. II. 2: 281. 1853. 
Puccinia Spermacoces Berk. & Curt. Grevillea 3: 53. 1874. 
Dicaeoma Spermacoceodis Kuntze, Rev. Gen. 33: 467. 1898. 
Dicaeoma lateritium Kuntze, Rev. Gen. 33: 469. 1898. 
Dicaeoma Spermacoces Kuntze, Rev. Gen. 33: 470. 1898. 
Puccinia Houstoniae Sydow, Hedwigia Beibl. 40: 126. 1901. 
Allodus Houstoniae Arth. Résult. Sci. Congr. Bot. Vienne 345. 1906. 
Dasyspora lateritia Arth. Résult. Sci. Congr. Bot. Vienne 347. 1906. 
