254 
Mycologia 
72. Aecidium favaceum sp. nov. 
Pycnia amphigenous, very numerous on discolored spots, 3-5 
mm. across, minute, evident, subcuticular, 60-90 /a across, flat- 
tened ; ostiolar filaments wanting. 
Aecia hypophyllous, crowded in groups on the pycnial area 
hemispherical, soon open ; peridium about 0.3 mm. across, delicate 
and evanescent; peridial cells oblong, 12-16 by 22-26 /x, readily 
separating, the walls 3-5 /x thick, the inner slightly thicker and 
strongly verrucose, the outer smooth, aeciospores globoid or 
broadly ellipsoid, 15-20 by 16-25 ju.; wall nearly or quite color- 
less, 1.5-2 ju, thick, minutely and closely verrucose. 
On Euphorbiaceae : 
Phyllanthus nobilis (L. f.) Miill. Arg., San German, Jan. 
16, 24P, May 25, 184P, Dec. 12, 58^2; Hormigueros, 
Oct. 13, 3226 (type). 
Three species of Aecidium have already been named which are 
said to be on Phyllanthus sp. Type material of Aecid. detrituni 
Thiim. from Brazil has been examined and found quite unlike 
the West Indian species in all important details. The descrip- 
tions of A. Phyllanthi P. Henn. from New Guinea, and of A. 
luzoniense P. Henn. from the Philippines, also seem very unlike 
the material in hand, judging from descriptions. 
73. Aecidium passifloriicola P. Henn. Hedwigia, 43 : 168. 
1904. 
On Passifloraceae : 
Passi flora rubra L., Mayagiiez, May 9, 1295. 
This form has been collected on the same host at Mayagiiez, 
P. R., April, 1904, by G. P. Clinton and in Jamacia by L. M. 
Underwood, Jan. 1903, 82, April, 1903, 1346, and Sept., 1906, 
74. Aecidium Tournefortiae P. Henn. Hedwigia 34: 338. 
1895. 
On Borraginaceae : 
Tournefortia hirsutissima L., Yauco, Oct. 3, 3 ^- 7 ! 
Rosario, Oct. 27, 3781. 
The type collection was made in Brazil. It is here reported 
for North America for the first time. 
