Puccinia cynomarathri Holw. 1913

Bullaria cynomarathri (Holway) Arthur & Mains
Puccinia Cynomarathri Holway, N. Am. Ured. 1: 94. 1913.
Pycnia epiphyllous, crowded in groups 1-3 mm. across, conspicuous, honey-yellow or brownish-black, globoid, 90-100 by 93-112 m; ostiolar filaments 70-80 p long.
II. Uredinia of the primary form crowded in a confluent circinating group around the pycnia, 2-5 mm. long, 0.6-0.8 mm. wide, otherwise similar to the secondary form; secondary uredinia amphigenous, scattered, oval, 0.8-1 mm. long, early naked, pulverulent, cinnamonbrown, ruptured epidermis conspicuous; urediniospores of both forms broadly ellipsoid or obovoid, 19-27 by 29-35 p; wall cinnamon-brown, rather thick, 2-2.5 ju, sometimes slightly thickened at apex and base, 3-4 fx, moderately echinulate, the pores usually 3, equatorial, prominent, covered by the swollen colorless cuticle.
III. Telia amphigenous, scattered, oval or linear, 0.5—2 mm. long, early naked, pulverulent, dark chocolate-brown, ruptured epidermis conspicuous; teliospores oblong or ellipsoid, 22-26 by 37-48 fi, rounded above and below, or somewhat narrowed below, slightly constricted at septum; wall light chestnutor dark cinnamon-brown, 1.5-2.5 y. thick, sometimes slightly thickened at apex, closely and rather prominently verrucose, the pore of the upper cell at apex, of the lower at septum; pedicel colorless, fragile.
On Ammiaceae:
Cynomarathrum Nuttallii (A. Gray) Coult. & Rose (Peucedanum graveolens S. Wats.), Utah. Type locality: Wasatch Mountains, Wasatch County, Utah, on Cynomarathrum Nuttallii. Distribution: Wasatch Mountains, Utah.