Part 2, 1907] UREDINACEAE 128 
II. Uredinia hypophyllous, thickly scattered in orbicular groups 1-5 mm. across, 
round, pustular, small, 0.1-0.3 mm. across, dehiscent by a central opening, at first bright- 
yellow; peridia delicate, inner walls thicker than the outer walls; urediniospores ellipsoid 
or obovate, 14-22 by 19-354; wall colorless, medium thick, 2-3x, sparsely and sharply 
echinulate. 
III. Telial columns hypophyllous, cylindrical, 125-150 thick, up to 2 mm. Jong, 
curved, bright orange-yellow becoming brownish; teliospores oblong or cylindrical, 8-12 
by 30-60, rounded or obtuse at both ends; wall nearly colorless, smooth, rather thick, 
2-3 b. 
ON GROSSULARIACEAE : 
Ribes longifiorum Nutt., Kansas. 
Ribes rubrum V,., New York. 
TYPE LOCALITY: Stralsund, Germany, on Ribes aureum. 
DISTRIBUTION : Kansas and New York, collected only once in each locality ; also in Europe. 
4. Cronartium Comandrae Peck, Bot. Gaz. 4: 128. 1879. 
Cronartium asclepiadeum Thesii Berk. Lond. Jour. Bot. 4: 311. 1845. 
Caecoma Comandrae Peck, Bull. Torrey Club 11: 50. 1884. 
Cronartium Thesii Lagerh. Troms@ Mus. Aarsh. 17: 94. 1895. 
O and I. Pycnia and aecia unknown. 
II. Uredinia hypophyllous and caulicolous, thickly scattered or somewhat gregarious, 
round, pustular, small, 0.1-0.2 mm. across, dehiscent by a small central opening ; peridium 
delicate, inner walls somewhat thicker than outer walls; urediniospores globoid, 20-23 by 
22-28 2 ; wall nearly colorless, rather thin, 1.5-2, sparsely and minutely echinulate. 
III. Telial columns hypophyllous and caulicolous, cylindrical, 90-110 thick, about 1 
mm. long; teliospores oblong or cylindrical, 12-15 by 32-44 4, obtuse or truncate at both 
ends ; wall nearly colorless, smooth, rather thick, 2-3 u. 
On SANTALACEAE :; 
Comandra pallida A. DC., Colorado, Iowa, Montana, Nebraska, South Dakota, Washington, 
Wyoming ; Assiniboia, British Columbia. 
Comandra umbellata (1,.) Nutt. (Thestum umbellatum L.), California, Illinois, Iowa, Mas- 
sachusetts, Michigan, New Jersey, New York, Ohio ; Ontario. 
TYPE LOCALITY: Colorado, on Comandra pallida. 
DISTRIBUTION : Northern United States and Canada from ocean to ocean. 
ExsIccaTI: Ellis, N. Am. Fungi 7082; Ellis & Ev. N. Am. Fungi 47/9; Ellis & Ev. Fungi 
Columb. 1914; Griff. West Am. Fungi 298, 2982; Seym. & Earle, Econ. Fungi 2/0. 
5. Cronartium coleosporioides (Diete! & Holway) Arthur. 
Uredo coleosporioides Dietel & Holway, Erythea 1: 247. 1893. 
O and I. Pyenia and aecia unknown. .- 
II. Uredinia hypophyllous and caulicolous, rather crowded in groups 1-5 mm. across, 
round, minute, 0.1 mm. across or less, dehiscent by a small central opening; peridium deli- 
cate; urediniospores globoid or broadly elliptical, 14-22 by 17-27; wall colorless, thin, 
1-1.5 4, sparsely and very minutely echinulate. 
III. Telial columns hypophyllous, cylindrical, short, 0.5 mm. long, 80-110 thick ; 
teliospores oblong or fusiform-oblong, 12-17 by 30-52, obtuse at both ends; wall nearly 
colorless, smooth, thin, 14. 
On SCROPHULARIACEAE : 
Castilleja foliolosa H. & A., California. 
Castilleja miniata Dougl., Washjngton. 
TYPE LOCALITY: Berkeley, California, on Castilleja foliolosa. 
DISTRIBUTION : Pacific coast of the United States. 
, 
13. CEROTELIUM Arth. Bull. Torrey Club 33: 30. 1906. 
Cycle of development imperfectly known, only uredinia and telia recognized, both 
being subepidermal. ' 
Uredinia somewhat erumpent. Peridium delicate, rupturing above, upper part evanes- 
cent; peridial cells isodiametric. Urediniospores borne singly on pedicels, globoid to 
ellipsoid ; wall pale-yellowish, echinulate, pores obscure. 
