70 



Mycologia 



March 27, II, 21J, April 4, II, III, 381; Barceloneta. 

 April 6, II, 215; Martin Pena, April 10, II, 214. 



33. Uromyces proeminens (DC.) Pass. 

 On Euphorbiaceae : 



Chamaesyce brasiliensis (Lam.) Small (Euphorbia brasi- 

 liensis Lam.), Mayagiiez, March 7, I, 243. 



Chamaesyce hirta (L.) Millsp. (Euphorbia hirta L., E. 

 pilulifera L.), Mayagiiez, March 3, II, 247, March 4, 



II, 244; Boqueron, March 11, I, II, 246; Yauco, March 

 31, II, 248 ; San German, April 1, II, 245. 



The first host is new for the West Indian islands. The rust 

 has also been collected at Rio Piedras, on C. prostrata (Ait.) 

 Small (Euphorbia prostrata Ait.), March 26, 1916, by J. A. 

 Stevenson 5061, another new host for the island. 



34. Uromyces Howei Peck. 

 On Asclepiadaceae : 



Asclepias curassavica L., Maricao, March 22, II, 297; 

 Coamo, April 24, II, 294. 



35. Uromyces Cestri Mont. 

 On Solanaceae: 



Cestrum laurifolium L'Her., Fajardo, April 20, I, III, 



369; Campo Allegra, April 21, I, III, 370. 

 Cestrum macro phy Hum Vent., Maricao, March 16-23, I, 



III, 365; Barceloneta, April 6, I, 366; Tanama River 

 Valley, April 7, I, 367; El Yunque, April 14, I, III, 368. 



36. Uromyces Hellerianus Arth. 

 On Cucurbitaceae : 



Cayaponia racemosa (Sw.) Cogn., Mayagiiez, March 8, 

 II, III, ^55; Barceloneta, April 6, II, III, 256; El 

 Yunque, April 14, II, iii, 254; El Duque near Naguabo, 

 April 19, II, iii, 253; Rio Piedras, April 22, II, ^57. 



Melothria guadalupensis (Spreng.) Cogn., Mayagiiez, 

 March 6, II, iii, 252, March 29, II, 251; El Duque near 

 Naguabo, April 19, II, 249; Rio Piedras, April 22, II, 

 230. 



