464 J. C. ARTHUR 
evident; paraphyses none; urediniospores broadly ellipsoid or obovoid, 
20-26 by 26-32 wall dark cinnamon-brown, moderately thick, 2-3 /z, 
finely and closely verrucose, the pores 4, ecfuatorial, distinct. 
TeHa hypophyllous, scattered, oblong or linear, 0.4-1 mm. long, 
early naked, chocolate-brown, ruptured epidermis evident; teliospores 
ellipsoid, 17-23 by 28-35 M» wall chestnut-brown, 1.5-2 ix, lighter and 
thicker above, 5-7 ji, smooth; pedicel slightly tinted or colorless, once 
to twice length of spore, uniform diameter. 
The host belongs to the tribe Andropogoneae. The urediniospores 
are similar to those of Puccinia Ellisiana, but very much larger. The 
species is readily distinguished from P. nifipes Diet, on /. arundinacea, 
which has paraphyses and echinulate urediniospores, and from Uredo 
Imperatae Magn. on /. cylindrica from Palestine, which has echinulate 
urediniospores, considerably thickened above. 
106. Puccinia Chaseana Arth. (on Poaceae). 
Anthephora hermaphrodita (L.) Kuntze, Quirigua, Dept. Zacapa, 
March 22, 1916, II, III, 600. 
Heretofore this heteroecious rust has been known only from the 
West Indies. Aecia have not yet been detected. 
107. Puccinia levis (Sacc. & Bizz.) Magn. (on Poaceae). 
Paspalum Humholdtianum Fliigge, Solola, 7000 feet alt., Jan. 27, 
1915, II, III, I2g; Guatemala City, Feb. 14, 1917, II, 864. 
A heteroecious rust for which no aecia have yet been found. It 
is found on a number of species of hosts from Texas and Louisiana 
through Mexico and the West Indies to Brazil and Argentina. 
108. Puccinia tubulosa (Pat. & Gaill.) Arth.nov. comb, (on Poaceae). 
Paspalum conjugatum Bergins, Quirigua, Dept. Zacapa, March 22, 
1916, 11,594- 
Paspalum Humholdtianum Fliigge, San Rafael, 7000 feet alt., Dept. 
Guatemala, Jan. 11, 1915, II, 64. 
Paspalum paniculatum L., Quirigua, Dept. Zacapa, March 22, 1916, 
II, III, 5P5. 
Solatium torvum Swartz, Montufar, on the railway between Barrios 
and Guatemala City, Dec. 28, 1914, I, o. 
A widespread tropical rust on many species of hosts. It is re- 
ported from Jamaica, Porto Rico, Cuba, and Bermuda of the West 
Indian Islands, and on the continent from Panama, Costa Rica, Mexi- 
co, and Texas. 
