300 NORTH AMERICAN FLORA [VoLuME 7 
O. Pycnia amphigenous, few, in small groups on discolored spots, becoming brownish, 
punctiform, flask-shaped, 160 «4 broad by 180 » high; ostiolar filaments 110 « long. 
I, Aecia hypophyllous and caulicolous, in circular groups 3-6 mm. in diameter, surrounding 
the pyenia, or more often distributed over larger areas on Callirhoé, cupulate or short-cylin- 
dric, 0.5-0.8 mm. broad by 0.5-1 mm. high, the opening somewhat constricted; peridium pale 
yellow or colorless, becoming finely lacerate and somewhat recurved almost to the base; peri- 
dial cells oblong or rhomboidal, 21-35 by 35-55 yu, the outer wall very thick, 10-18 4, smooth 
and transversely striate, the inner wall much thinner, 2-3 p, very finely and inconspicuously 
verrucose; aeciospores globoid or ellipsoid, 16-24 by 18-27 u; wall colorless, thick, 2-5 yu, 
finely verrucose. 
ON MALVACEAE: 
Callirhoé alceoides (Micbx.) A. Gray, Nebraska. 
Callirhoé digitata Nutt., Texas. , 
Mena fasciculaitum (Nutt.) Greene (M. Thurbert A. Gray), California; Lower Cali- 
ornia, 
Malvastrum marrubioides Durand & Hilgard, California. 
Phymosia rivularis (Dougl.) Rydb. (Sphaeralcea rivularis Torr.), Washington. 
Sidalcea asprella Greene, California. 
Sidalcea candida A. Gray, Utah. 
Sidalcea malvaeflora (Moc. & Sessé) A. Gray (S. humilis A. Gray, S. delphinifolia Greene), 
California. 
Sidalcea neo-mexicana A. Gray, Colorado, Utah. 
Sidalcea nervata A. Nelson, Idaho. 
II. Uredinia not seen; urediniospores intermixed with the teliospores, ellipsoid to obovoid, 
20-27 by 26-32 u; wall golden-yellow, about 3 thick, moderately and finely verrucose or 
verrucose-echinulate, the pores 4, equatorial. 
III. Telia epiphyllous, scattered, early naked, very large, oblong-linear or fusiform, 
5-10 mm. long by 1-2 mm. broad, or usually as broad as the leaf, chocolate-brown, the epi- 
dermis rupturing in longitudinal shreds full length of the sorus; teliospores ellipsoid or oblong, 
20-29 by 35-42 y, rounded at both ends, not constricted. at septum; wall dark cinnamon-brown 
above, paler below, 2-3 » thick, moderately thickened above, 4-7 wu, smooth; pedicel colorless, 
two to three times length of spore. 
ON POACEAE: 
Oryzopsis hymenoides (R. & S.) Ricker (O. cuspidata Benth., Eriocoma cuspidata Nutt.), 
California, Nevada. 
Stipa comata ‘Trin. & Rupr., Colorado, Wyoming. 
Stipa lepida Andersoni (Vasey) Hitche, (S. eminens Andersoni Vasey), California. | 
Stipa Lettermani Vasey, Colorado. 
Stipa minor (Vasey) Scribn., Colorado, Utah. 
Stipa occidentalis Thurb., California. 
Stipa pulchra Hitche., California. 
Stipa speciosa Trin. & Rupr., California. 
Type LocaLiry: Lower California, on Malvasirum Thurberi. 
DiIsTRIBUTION: Wyoming to Washington and southward to Texas and Lower California; also 
in South America. 
ILLUSTRATIONS: Bull. Torrey Club 29: 298, 
Exsiccatr: Barth. Fungi Columb. 2404, 3201; Barth. N. Am. Ured. 206, 1937, 2102; Clem- 
ents, Crypt. Form. Colo. 600; D. Griff. W. Am. Fungi 387; Garrett, Fungi Utah. 193. 
40. Dicaeoma Stipae (Arth.) Kuntze, Rev. Gen. 3°: 470. 1898. 
Aecidium Bigeloviae Peck, Bot. Gaz. 3:35. 1878. Not Dicaeoma Bigelowiae Kuntze, 1898. 
Puccinia Stipae Arth. Bull. Iowa Agr. Coll. Dep. Bot. 1884: 160. 1884. 
Aecidium crepidicola Ell. & Gall. Jour. Myc. 6:31. 1890. 
Aecidium compositarum Lygodesmiae Webber; De-Toni, in Sacc. Syll. Fung. 9: 323. 1891. 
A ecidium Chrysopsidis Ellis & And. Bot. Gaz. 16:48. 1891, 
Aecidium solidaginicola Ellis & Ev. Erythea 1: 216. 1893. 
Aecidium sclerothecioides Ellis & Ev. Am. Nat. 31: 428. 1897, 
Aecidium Lygodesmiae Shear; Ellis & Ev. Fungi Columb. 1476. 1901. 
Aecidium incurvum Tracy & Earle, in Greene, Pl. Baker. 1:18. 1901. 
Aecidium Grindeliae D. Griff. Bull. Torrey Club 29: 299, 1902. Not A. Grindeliae Sydow, 1901. 
Aecidium recedens Arth. Bull. Torrey Club 31:7. 1904. 
O. Pycnia amphigenous, irregularly grouped, punctiform, honey-yellow, becoming orange- 
brown, partially extruded, globose in vertical section, 90-110 » broad, 100-115 » deep; ostiolar 
filaments 50-112 » long, agglutinated to form a prominent column. 
I. Aecia amphigenous, in irregular crowded groups on hypertrophied areas, small, 0.3- 
