1922] ARTHUR—UREDINALES és 
7. Milesia Blechni (Sydow), comb. nov. (Melampsorella Blechni 
Sydow, Ann. Myc. 1:537. 1903; Uredo Blechni Diet. and Neg., 
Engler’s Jahrb. 22:358. 1896).—On Lygodium polymorphum 
(Cav.) H.B.K., St. Anns Valley, February 20, 1913, II, Thaxter 45. 
A common rust in Europe, and also known from Chile. The host is new 
for the species. Special interest attaches to the group of fern rusts to which 
this one belongs, as probably representing the most primitive characters of 
Melampsoraceae, and possibly of all the rusts as well. 
8. CIONOTHRIX PRAELONGA (Wint.) Arth. N.A.F. 124.—On 
Eupatorium odoratum L., La Seiva Valley, April 1913, Thaxter 41. 
A common short cycle rust 
occuring throughout tropical 
America on various species of 
Eupatorium. 
9. RAVENELIA INDIGO- 
FERAE Tranz. N.A.F. 144. 
—On Indigo-fera suffruticosa 
Mill. (I. Anil L.), Roxbor- 
ough, Tobago, May 8-0, 
1913, II, Thaxter 25. 
10. DICHEIRINIA BINATA 
(Berk.) Arth. N.A.F. 147 
(Uredo Cabreriana Kern and 
Kellerm.)—On Erythrina 
umbrosa H.B.K., Palmiste, San Fernando, October 24, 1916, 
II, Rorer. 
Fr 5 oe and mature teliospores 
of M. areealla pallida, the latter germinating. 
. “The host is called Anauca Immortal, and is used to shade cacao. The 
Tust attacks not only the leaf blades, but the midribs and petioles, sometimes 
causing distortion,” as writes Mr. RorER. It is not uncommon in other 
West Indian islands and in Central America. 
11. CTENODERMA CRISTATUM (Speg.) Sydow, Ann. Myc. 17: 103. 
1919 (Uromyces Cupaniae Arth. and Johnst.)—On Cupania 
americana L., Maraval Valley, April 1913, III, Thaxter 40. 
12. DESMELLA GyMNoGRAMMES (P. Henn.) Sydow, Ann. Myc. 
16: 242. 1918.—On Adiantum latifolium Lam., Maraval Valley, 
March 1913, II, Thaxter 44; Cyclopeltis semicordata (Sw.) J. Sm., 
Maraval Valley, 1913, Il, Thaxter 46. 
