Puccinia evadens

Puccinia baccharidis

Eriosporangium evadens (Harkn) [pt 3 1913](https://www.biodiversitylibrary.org/page/750972#page/55/mode/1up)

Coleosporium baccharidis
Puccinia evadens
Caeoma negerianum

0. Pycnia amphigenous and caulicolous, scattered among the aecia on the leaves and younger branches, inconspicuous, honey-yellow, globoid or ovate, 150-175 um in diameter. 

1. Aecia amphigenous, or more commonly caulicolous, causing fusiform or irregular swellings of the branches, sometimes forming witches' brooms, scattered, oblong or oblong- linear, 0.5-1 mm. wide by 1-4 mm. long, early dehiscent, at first orange-colored, drying to a dirty-white, pulverulent, ruptured epidermis or cortex overarching, when the spores fall away showing pits or fissures; aeciospores irregularly oblong, or oblong-fusiform, 22-26 by 35-60 um, often narrowed and acute at both ends, but especially above; wall pale- yellow or quite colorless, moderately thick, 2-3 um, somewhat thicker above, 3-9 um , noticeably but finely verrucose, with thickly set and irregular warts. 

II. Uredinia chiefly hypophyllous, scattered, usually few, round or oblong, 0.1-0.3 mm. long, soon naked, orange-colored, becoming pale, somewhat pulverulent, ruptured epidermis often overarching, otherwise inconspicuous; urediniospores broadly ellipsoid, obovate-ellipsoid, or nearly globoid, 23-27 by 27-35 um; wall thin, 1.5-2 um nearly colorless, finely and rather sparsely verrucose-echinulate, with points about 3 um apart, the pores small, very indistinct, apparently more than 4 and scattered. 

III, Telia chiefly hypophyllous, and to some extent on the young branches, scattered, round, 0.3-1 mm. across, soon naked, pulvinate, pale cinnamon-brown, or cinereous by germination, ruptured epidermis inconspicuous ; teliospores oblong or obovate-oblong, 27-32 by 48-63 m, rounded at both ends, or somewhat narrowed below, somewhat constricted at the septum; wall pale-brownish, or almost colorless, smooth, thin, 1.5-2 um, usually thicker at the apex, 3-6 um; pedicel colorless, or slightly tinted, terete, 6-10 um in diameter, thin-walled, once to twice length of spore. 

On Carduaceae : 
Baccharis consanguinea Greene, California. 
Baccharis emoryi A. Gray, Arizona. 
Baccharis pilularis DC, California. 
Baccharis pteronioides DC, Michoacan. 
Baccharis sp., Cuba.

Type locality: San Francisco, California, on Baccharis pilularis. 

Distribution : Central California and Arizona southeastward through Mexico, and the West Indies; also in South America.

Dicaeoma evadens (Hark) Arthur & Jackson [pt 6 1921](https://www.biodiversitylibrary.org/page/751498#page/21/mode/1up)

Coleosporium baccharidis
Puccinia evadens
Caeoma negerianum
Eriosporangium evadens

0. Pycnia amphigenous and caulicolous, scattered among the aecia on leaves and younger branches, inconspicuous, honey-yellow, globoid or ovoid, 150-175 um in diameter. 

1. Aecia amphigenous, or more commonly caulicolous, causing fusiform or irregular swell- ings of the branches, sometimes forming witches' brooms, scattered, oblong or oblong-linear, 0.5-1 mm. wide by 1-4 mm. long, early dehiscent, at first orange-colored, drying to a dirty- white, pulverulent, ruptured epidermis or cortex overarching, when the spores fall away showing pits or fissures; aeciospores irregularly oblong or oblong-fusiform, 22-26 by 35-60 um, often narrowed and acute at both ends, but especially above; wall pale-yellow or quite colorless, moderately thick, 2-3 um., somewhat thicker above, 3-9 um., noticeably but finely verrucose, with thickly set and irregular warts. 

II. Uredinia chiefly hypophyllous, scattered, usually few, round or oblong, 0.1-0.3 mm. long, soon naked, orange-colored, becoming pale, somewhat pulverulent, ruptured epidermis often overarching, otherwise inconspicuous; urediniospores broadly ellipsoid, obovoid-ellipsoid, or nearly globoid, 23-27 by 27-35 um; wall thin, 1.5-2 um, nearly colorless, finely and rather Sparsely verrucose-echinulate with points about 3 um apart, the pores small, very indistinct, apparently more than 4 and scattered. 

III. Telia chiefly hypophyllous, and to some extent on the young branches, scattered, round, 0.3-1 mm. across, soon naked, pulvinate, pale cinnamon-brown, or cinereous by germination, ruptured epidermis inconspicuous; teliospores oblong or obovoid-oblong, 27-32 by 48-63 um, rounded at both ends, or somewhat narrowed below, somewhat constricted at septum; wall pale-brownish, or almost colorless, smooth, thin, 1.5-2 um, usually thicker at apex, 3-6 um; pedicel colorless, or slightly tinted, terete, 6-10 um in diameter, thin-walled, once to twice length of spore. 

On Carduaceae: Baccharis consanguinea Greene, California. Baccharis Emoryi A. Gray, Arizona. Baccharis halimifolia, North Carolina; Cuba. Baccharis pilularis DC, California. Baccharis pteronioides DC, Michoacan. Baccharis salicina T. & G., New Mexico. Baccharis sarothroides A. Gray, Arizona. Baccharis thesioides H. B. K., Arizona. 

Type locality: San Francisco, California, on Baccharis pilularis. 

Distribution: Central California to New Mexico, and southeastward through Mexico and the West Indies: also in South America. 

Dicaeoma baccharidis (Dietel & Holway)

Puccinia baccharidis
Caeoma punctato-striatum
Eriosporangium punctato-striatum

0. Pycnia amphigenous, numerous, crowded in small orbicular groups, comparatively large, punctiform, globoid-flask-shaped, 125-175 um in diameter; pycniospores globoid, 2-3 um in diameter. 

1. Aecia hypophyllous and caulicolous, when on leaves in orbicular groups surrounding the pycnia, at first bullate, irregular in form, 0.3-1 mm. in longest diameter, soon dehiscent, orange-colored, fading to pale-fuscous when dry, ruptured epidermis overarching, on stems form- mg long fissures, 5-15 mm., without producing hypertrophy, pulverulent, distinctly fuscous when dry, old fissures more or less closed; peridium wanting; aeciospores fusiform or globoid, mostly ovoid-ellipsoid, rounded below, usually somewhat pointed above or even acute, variable in size, 20-29 by 27-60 um, usually 22-25 by 30-45 m; wall slightly tinted or colorless, moderately thick, 2-2.5 um, slightly if at all thicker above, verrucose with rather thickly set punctate beads, arranged in more or less evident longitudinal lines, especially toward apex . 

II. Uredinia amphigenous, scattered, abundant, roundish, 0.1-0.7 mm. across, at first bullate, soon naked, pulverulent, cinnamon-brown, ruptured epidermis usually overarching; urediniospores broadly ellipsoid or obovoid, 20-27 by 29-45 um; wall thin, 1.5-2.5 um, pale cinnamon-brown, finely and closely echinulate, with points 1 /x or less apart, the pores evident, usually large, scattered, about 6.

III. Telia chiefly hypophyllous, thickly scattered, round, 0.3-0.8 mm. across, soon naked, pulvinate, pale cinnamon-brown, or cinerous by germination, ruptured epidermis inconspicuous; teliospores oblong, 24-29 by 45-70 um, rounded or obtuse at both ends, some- what constricted at septum; wall pale cinnamon-brown, smooth, thin, about 1.5 m. s. little thicker above, 2-6 um; pedicel colorless, usually inflated up to 25 ju in diameter near the spore, tapering downward, once to twice length of spore, the wall thin, collapsing upon germination of the spore. 

On Carduaceae: 
Baccharis coerulescens A. Gray, Hidalgo. 
Bacckaris Emoryi A. Gray, California. 
Baccharis glutinosa Pars., Arizona, New Mexico, Texas; Chihuahua, Michoacan, Oaxaca; Guatemala. 
Baccharis viminea DC, California. 
Baccharis sp., Jalisco, Mexico (state). 

Type locality: Pasadena, California, on Baccharis viminea. 

Distribution: From central California to Texas, and southward through Mexico and Central America; also in South America. 

Uredinales