Dietelia vernoniae Arthur 1905

Endophyllum vernoniae Arthur
Dietelia Vernoniae Arth. Bot. Gaz. 40: 198. 1905.
*
Pycnia chiefiy epiphyllous, numerous, crowded in orbicular groups, punctiform, golden-yellow becoming brown, prominent, subepidermal, depressed-globoid, or somewhat conical, 130-145/^ broad; central cavity large; ostiolar filaments becoming agglutinate.
III. Telia hypophyllous, crowded opposite the pycnia in annular groups of 2-7, or solitary, round, 0.5 mm. across, soon naked, pulverulent, ruptured epidermis noticeable; peridia falling apart and disappearing with the spores, cells similar to the spores, but flattened and smooth on the outer surface ; teliospores ellipsoid or globoid, more or less angular and irregular from pressure, 22-27 by 30-37 fi ; wall very pale-yellow, medium thick, 1.5-2/^, closely and strongly verrucose, except a small spot at the base, the tubercles somewhat deciduous.
On Carduaceae :
Vernonia {Deppeana I^ess.?), Veracruz. Type locality : Jalapa, Mexico, on Vernonia, probably V. Deppeana, Distribution : Known only from the type locality.