432 
J. C. ARTHUR 
A long-cycle species, having pycnia, primary and secondary uredi- 
nia, and telia. It is often listed as Puccinia appendiculata Wint. 
Nos. 46g and djga are the first collections in which pycnia and primary 
uredinia have been seen. The pycnia are amphigenous, and are 
crowded in small groups on discolored spots 1.5-3.5 n^"^- across. They 
are subcuticular, light chestnut-brown, broadly conical, 67-135 jx 
broad by 39-50 m high. The primary uredinia are amphigenous, 
encircling the pycnia, round or somewhat oblong, 0.2-0.8 mm. across. 
The urediniospores are slightly larger, and with a more hygroscopic 
layer, than in the secondary form. Other characters for the two forms 
are the same in both. 
54. Nephlyctis transformans (Ellis & Everh.) Arth. (on Bignoni- 
aceae). 
Tecoma Stans (L.) Juss. {Stenolohium Stans D. Don), Sanarate, 
Dept. Guatemala, Feb. ip, 1916, o. III, 46'^] Palin, Dept. 
Amatitlan, Dec. 24, 1916, o, III, 63Q. 
A short-cycle species, often listed as Puccinia transformans Ellis & 
Ev. No. 6s Q also showed a small amount of Prospodium appendicu- 
latum, o, II, on some of the leaves, and is recorded under that species 
as no. 6joa. 
55. Phragmidium occidentale Arth. (on Rosaceae). 
Oreohatis trilohus (Seringe) Rydb., Quez^ltenango, Jan. 31, 1917, ii, 
III, 813.^ 
This collection agrees closely with the species as heretofore known 
on Rubacer parviflorum in the western United States and Canada, but 
the lower part of the telial pedicels are more highly hygroscopic, in 
water usually swelling until they burst. 
56. Phragmidium subcorticinum (Shrank) Wint. (on Rosaceae). 
Rosa cult., Antigua, Dept. Sacatepequez, March 4, 1916, ii. III, 
544; Malacatancito, Dept. Huehuetenango, Jan. 25, 191 7, II, 
m,778. 
The species appears to be rare in Guatemala, although it is cos- 
mopolitan on cultivated roses, especially on those having the general 
characteristics of Rosa gallica. 
57. Phragmidium Potentillae (Pers.) P. Karst. (on Rosaceae). 
Potentilla sp., Volcan de Agua, Dept. Sacatepequez, March 7, 
1916, II, III, S72] same, Dec. 29, 1916, II, III, ^57. 
