Parr 6, 1921] AECIDIACEAE 413 
On LaMIAcBat: 
Salvia albicans Fernald, Guerrero. 
Tyre Locaity: Iguala, Mexico, on Salvia albicans. 
DISTRIBUTION: Southeastern Mexico. 
217. Dicaeoma diutinum (Mains & Holway) Arthur. 
Puccinia diutina Mains & Holway; Arth. Mycologia 10: 136. 1918. 
O. Pycnia epiphyllous, few, crowded on yellowish areas 1~2 mm. across, noticeable, 
light-brown, globoid, 98-190 by 103-1904; ostiolar filaments 80-100 u long, more or less 
agglutinated into a column. 
I. Aecia hypophyllous, crowded on yellowish spots opposite the pyenia, irregular, round 
or oblong, 0.8-1.5 mm. long, shallow, 0.1-0.2 mm. high; peridium white, the margin remain- 
ing more or less incurved, erose; peridial cells irregularly rectangular in radial longitudinal 
section, 13-21 by 26~51 yw, abutted or slightly overlapping, the outer wall 5~13 yu thick, striate, 
the inner wall 1.5 » thick, closely and finely verrucose; aeciospores ellipsoid, globoid or oblong, 
19-26 by 27-39 y; wall colorless, thick, 2.5-5 u, very finely and closely verrucose. 
II. Uredinia amphigenous, scattered, round, 0.1-0.2 mm. in diameter, early naked, pul- 
verulent, dark cinnamon- or chestnut-brown, ruptured epidermis rather inconspicuous; uredi- 
niospores oblate-spheroid or globoid, 19-24 by 18-23 u; wall in the upper part of spore dark 
cinnamon- or light chestnut-brown, 2 » thick, becoming rather abruptly colorless in the lower 
third of the spore and less than 1 yw thick, closely and finely echinulate, the pores 2 or 3, sub- 
equatorial, rather indistinct. 
III. Telia amphigenous, scattered, round, 0.1-0.2 mm. in diameter, early naked, some- 
what pulverulent, blackish-brown, ruptured epidermis rather inconspicuous; teliospores 
broadly ellipsoid, 23-26 by 25-33 yw, rounded at both ends, slightly or not constricted at septum; 
wall dark chestnut-brown, 2-3 » thick, occasionally thickened up to 5 « at apex, rather closely 
and coarsely verrucose; pedicel colorless, fragile, up to 55 » long, sometimes laterally displaced. 
On LAMIACEAE: 
Salvia chrysantha Mart. & Gal., Oaxaca. 
Salvia Piitiert Briq. (?), Costa Rica. 
Salvia scorodoniaefolia Poir., Jalisco. 
Type LocaLity: Slopes of Iraztii-above Cartago, Costa Rica, on Salvia Pittiert (?). 
DIsTRIBUTION: Southern Mexico and Costa Rica. 
218. Dicaeoma infrequens (Holway) Arthur. 
Puccinia infrequens Holway, Jour. Myc. 11: 158. 1905. 
O and I. Pycnia and aecia unknown. 
II. Uredinia hypophyllous, scattered, round, 0.3 mm. in diameter, early naked, pulveru- 
lent, cinnamon-brown, ruptured epidermis not noticeable; urediniospores oblate-spheroid, 
18-25 » broad by 16-23 » high, or globoid or obovoid, 18-20 by 20-25 yw; wall cinnamon-brown, 
1—2 » thick, moderately echinulate, the pores 2 or 3, subequatorial or approximately equatorial. 
III. Telia hypophyllous, scattered, round or ovate, 0.2—0.5 mm. in diameter, early naked, 
pulverulent, chestnut-brown, ruptured epidermis not noticeable; teliospores ellipsoid, 20-26 
by 27-35 p, occasionally up to 39 » long, rounded at both ends, slightly or not constricted at 
septum; wall dark cinnamon-brown, rather finely and closely verrucose, markings uniting 
irregularly in short lines, 1-2 » thick, thickened into a semi-hyaline umbo at apex, 5-9 y, the 
pore of the lower cell often about half way down; pedicel colorless, very short, thin-walled. 
On LAMIACEAE: 
Salvia cinnabarina Mart. & Gal., Oaxaca; Guatemala. 
TvPE LOCALITY: Oaxaca, Mexico, on Salvia cinnabarina,. 
DrsTRIBUTION: Southern Mexico and Guatemala. 
Exsiccati: Barth. N. Am. Ured. 1453. 
219. Dicaeoma mitratum (Sydow) Arthur. 
Puccinia mitrata Sydow, Monog. Ured. 1: 294. 1902. 
.O and I. Pycnia and aecia unknown. 
II. Uredinia hypophyllous, numerous, scattered or sometimes crowded in groups of two 
or three sori, round, minute, 0.1-0.4 mm. in diameter, early naked, very pulverulent, cinna- 
