526 
J. C. ARTHUR 
Eupatorium pycnocephaloides Robinson, Volcan de Agua, Dept. 
Sacatepequez, Jan. 13, 1915, II, III, 8^] same, March 7, 1916, 
II, III, 5^4; Solola, 7000 feet alt., Jan. 28, 1915, II, III, 144; 
Quezaltenango, Jan. 18, 1917, II, III, 750, Huehuetenango, 
Jan. 23, 1917, II, III, 774. 
Eupatorium pycnocephaloides glandulipes Robinson, Totonicapam, 
Jan. 24, 1915, ii, III, 106. 
Eupatorium pycnocephalum Less., Solola, Jan. 29, 1915, II, III, 
J5J; Antigua, Dept. Sacatepequez, March 2, 1916, II, III, 549: 
San FeHpe, Dept. Retalhuleu, Jan. 13, 1917, II, 713. 
Eupatorium sp., Guatemala City, Dec. 23, 1916, II, III, 62g; 
San Felipe, Dept. Retalhuleu, Jan. 14, 1917, II, 717; Aguas 
Amargas, Dept. Quezaltenango, Jan. 30, 1917, II, III, 801. 
This long-cycle rust is imperfectly known. It is presumable that 
the species possesses aecia as well as pycnia, although neither have 
yet been seen. This is the more likely as no rust on Eupatorium or its 
close allies has yet been found with pycnia associated with the ure- 
dinia. For a time it was supposed that the aecia on Eupatorium from 
Mexico and Central America, having apically thickened walls, be- 
longed with this species, and since 1906 the combination has often been 
called Puccinia rosea.'' By the observations of Prof. Holway, 
coupled with data regarding distribution, it now seems reasonably 
certain that the aecia in question are heteroecious, and belong with a 
grass species (see no. 117). 
The rust was collected by Kellerman on Ageratum conyzoides, 
at Mazatenango, Feb. 28, 1905, II, 4346, 5373, and at San Felipe, 
Feb. 4, 1906, II, 5446 (Kellerm. Fungi Sel. Guat. 7); and on Eupa- 
torium pycnocephalum, at Guatemala City, Feb. i, 1905, II, iii, 5312. 
The three collections were reported by Kern in Journ. Myc. I.e. 
188. Puccinia Hodgsoniana Kern sp. nov. (on Carduaceae). 
Eupatorium Schidtzii Schnitt., forma erythranthodium Robinson, 
Agua Caliente, Dept. Guatemala, Feb. 10, 1917, II, III, 8^3. 
Eupatorium Schidtzii ophryolepis Robinson, San Lucas Tollman, 
7000 feet alt., Dept. Solola, Feb. 3, 1915, II, III, 187; Quezal- 
tenango, Jan. 18, 1917, II, III, 744] Agua Amargas, Dept. 
Quezaltenango, Jan. 30, 1917, II, III, 804. 
Eupatorium Schidtzii velutipes Robinson, San Lucas Tollman, 
5100 feet alt., Dept. Solola, Feb. 2, 1915, II, iii, 170] Guatemala 
City, March 17, 1916, II, 587. 
