UREDINALES OF GUATEMALA 
Family: Coleosporiaceae 
Coleosporium domingensis (Berk.) comb. nov. (on Apocynaceae) . 
Phimiera lutea Ruiz & Pav. 
Plumiera rubra L. 
A specimen of this rust on P. lutea is in the cryptogamic herbarium 
of the New York Botanical Garden, collected by J. Donnell Smith, at 
Cuyatenango, April, 1892, showing uredinia. A collection on P. 
rubra was made by Kellerman, at Palmar, Dept. Quezaltenango, 
Feb. II, 1906, II, S4^o, reported by Kern, Journ. Myc. 13: 18-26. 
1907, and issued in Kellerman's Fungi Selecti Guatemalensis ij, under 
the name C. Pliimierae Pat. 
The species is apparently abundant in the West Indies, but these 
two collections are the only ones known from the continent. Telia 
are seemingly rare. The aecia doubtless appear on pine leaves, when- 
ever formed, as in all other species belonging to the genus Coleospor- 
ium, but no trace of them has yet been secured. 
The director of the Royal Kew Herbarium kindly sent the writer 
recently a fragment from the type material of Uredo domingensis 
Berk., published in 1852, in the Ann. Mag. Nat. Hist., 2d series, 
vol. 9, as on an unknown plant from the West Indian island of Santo 
Domingo. Although the fragment sent was only a centimeter square, 
it bore numerous sori in good condition. It was easy to see that the 
fungus was the uredinial stage of a Coleosporium. From the peculiar 
areolation of the smooth surfaces of the leaf it was possible tentatively 
to refer the host to Plumiera. With the assistance of Mr. Percy 
Wilson, of the New York Botanical Garden, this assumption was con- 
firmed, and it was further made highly probable that it belonged to 
P. rubra, but that could not be positively confirmed. The specific 
name of the rust is here changed to agree with this discovery. It has 
also been found that Uredo plumieriicola P. Henn. (Hedwigia 43 : 161. 
1904) is to be referred to the same species. 
2. Coleosporium Ipomoeae (Schw.) Burr, (on Convolvulaceae). 
Ipomoea glabriuscula House, Sanarate, Dept. Guatemala, Feb. 10, 
1916, II, III, 47/. 
Ipomoea muricata Roem. & Schult., Guatemala City, Dec. 31, 
1914, II, I. 
Ipomoea Petri Donn. Sm. (/. sericophylla Peter, not Meissn.), San 
Lucas Toliman, 5,100 feet alt.. Dept. Solola, Feb. 2, 1915, II, 
181; Moran, Dept. Amatitlan, Dec. 22, 1916, II, 6ig. 
