166 SEMI-CENTENNIAL OF TORREY BOTANICAL CLUB 
rust seems to indicate that, while there is some variation as to 
size of urediniospores and thickness of walls, yet all may be con- 
sidered to be one species, and also to be the same as the type ma- 
terial of Uredo Dioscoreae P. Henn. from Brazil. The surface of 
the spores is conspicuously echinulate (not ‘‘verrucose,” as erro- 
neously stated in the Uredinales of Porto Rico (Mycologia 7: 320. 
I915)), and the pores indistinct but probably two and equatorial, 
or somewhat superequatorial. 
Puccinia valida Arth., on Dioscorea convolvulacea, from Jalapa, 
Mexico, has uredinia that in both gross and microscopic appear- 
ance agree quite well with the West Indian material. The chief 
differences, aside from being intermixed with the telia, are the 
darker and thicker walls of some of the urediniospores. There 
are good reasons for thinking that all the West Indian collections 
belong to some Uromyces or Puccinia, possibly to the Mexican 
species of Puccinia.’ 
127. UREDO GYNANDREARUM Corda, Icones Fung. 3: 3. 1839. 
ON ORCHIDACEAE: 
Habenaria maculosa L. 
This imperfectly known orchid rust was observed on a phanero- 
gamic specimen in the herbarium of the N. Y. Bot. Garden, col- 
lected on the side and top of El Yunque (Prov. Oriente), Dec. 30, 
1910, J. A. Shafer 7992. It is known also from Porto Rico and 
Trinidad, and from Central and South America. 
128. UREDO NIGROPUNCTATA P. Henn. Hedwigia 35: 254. 1896. 
This imperfectly known orchid rust was observed on a phanero- 
gamic collection in the herbarium of the N. Y. Bot. Garden, col- 
lected upon El Yunque, Baracoa (Prov. Oriente), March, 1903, 
Underwood & Earle 929. It is also known from Porto Rico, 
Haiti, the Bahamas, and from Florida and South America. 
129. UREDO CHERIMOLIAE Lagerh. Bull. Soc. Myc. Fr. 11: 215. 
1895. 
ON ANNONACEAE: 
Annona reticulata L., Santiago de las Vegas, March 2, 1916, 
Johnston 492. 
