Part 3, 1912] AECIDIACEAE 161 



II. Uredinia hypophyllous, or somewhat amphigenous, more or less gregarious, 

 roundish, small or minute, early naked, cinnamon-brown, ruptured cuticle inconspicuous ; 

 paraphyses peripheral, hyphoid, somewhat bent, 5-9 by 40-50 /i, the wall thin, colorless, 

 smooth; urediniospores broadly obovoid or globoid, 18-22 by 20-25 /^ ; wall golden-yellow, 

 rather thin, 1-2 ^, sparsely and evenly verrucose, the pores indistinct, 2, opposite and 

 equatorial . 



III. Telia chiefly hypophyllous, resembling the uredinia, but blackish and with fewer 

 paraphyses; teliospores elliptical, 26-29 by 33-38 /i, rounded at both ends, which become 

 depressed in drying, slightly constricted at the septum ; wall dark cinnamon-brown , thick, 

 3-4/i, gelatinous layer golden-yellow, inconspicuous, rather densely and prominently ver- 

 rucose with slender papillae; pedicel nearly colorless except near the spore, delicate, once 

 to once and half length of spore, with one or two irregular whorls of small, somewhat 

 branched appendages near the base. 



On Bignoniaceae : 



Amphilophium moUe Cham. & Schlecht., Mexico. 



Pithecoctenium hexagonuni DC, Morelos. 



Type locality : Cuernavaca, Morelos, on '■'Amphilophium^''^ error for Pithecoctenium hexa- 

 gonum . 



Distribution : Central Mexico. 

 ExsicCATi : Vesterg. Micr. Rar. Sel. 1125. 



3. Prospodium tuberculatum (Speg.) Arthur.* 



Uredo iuberculata Speg. Anal. Soc. Ci. Argent. 9 : 172. 1880. 

 Puccinia iuberculata Speg. Anal. Soc. Ci. Argent. 10 : 6. 1880. 



O. Pycnia unknown. 



II. Uredinia chiefly hypophyllous, scattered, orbicular, 0.3-0.5 mm. across, early naked, 

 pulverulent, pulvinate, cinnamon-brown, ruptured cuticle inconspicuous ; paraphyses 

 peripheral, cylindrical, straight, not exceeding the spore-mass, 9-12 by 27-35/^, the wall color- 

 less, uniformly thin, 1^, smooth; urediniospores obovate-globoid, 23-26 by 24-29/^; wall 

 obscurely lamellate, golden-brown, moderately thick, 2-3^, sparsely and evenly echinulate 

 with points 3-4 /^ apart, the pores 2, opposite and equatorial. 



III. Telia usually amphigenous, scattered, often crowded, irregularly orbicular, 0.3-0.7 

 mm. across, early naked, velvety and somewhat pulverulent, dark chocolate-brown, rup- 

 tured cuticle usually inconspicuous ; teliospores ellipsoid, 29-35 by 40-48//, rounded at both 

 ends, slightly or not constricted at the septum; wall chocolate-brown, gelatinous layer in- 

 conspicuous, prominently verrucose with bead-like papillae, almost evenly thick, 3-6 ^u, 

 slightly thicker at apex, 5-8//, with a small, lighter-colored umbo; pedicel nearly or quite 

 colorless, somewhat fragile, 9-10// in diameter, once to once and half length of spore, with 

 one or two irregular whorls of small, somewhat branched appendages near the base. 



On Verbenaceae : 



Lantana horrida H.B.K., Jalisco, Morelos. 

 Type locality : Recoleta, Argentina, on Lantana Camara, 

 Distribution : Central Mexico ; also in South America. 



4. Prospodium Lippiae (Speg.) Arthur. 



Puccinia Lippiae Speg. Anal. Mus. Nac. Buenos Aires 6 : 224. 1898. 

 Uredo Lippiae Speg. Anal. Mus. Nac. Buenos Aires 6 : 238. 1898. 

 Uredo Lippiae Dietel & Holway ; Holway, Bot. Gaz. 31 : 335. 1901. 



O. Pycnia unknown. 



* The following key to species of Prospodium should be substituted for the one on the 



preceding page : 



P3,r"3.t5livscs free 



Urediniospor'e-wall inflated ; teliosporic appendages large. 1. P. appendiculaium . 



Urediniospore-wall not noticeably inflated. a, ■, ^z. ■■ 



Teliosporic appendages small. 2. P. Amphilophtt. 



Teliosporic appendages large. , r> , a / v 



Appendages in 1 or 2 whorls. 3. P. tuberculatum. 



Appendages in 4 or more whorls. 4. P. Lipptae. 



Paraphyses united at the base into a cup. _ c n .7 ■ ^ 



Urediniospore-wall inflated; teliosporic appendages small. 5. P plapopus. 



Urediniospore-wall not noticeably inflated; teliosporic appendages large. 6. P. bahamense. 



