392 



TYPE LOCAJJTY: Kadiak, Alaska, on Geniuiiiin oriaiithum. 

 DISTRIBUTION: Known only from Alaska. 



This differs from Aecidium sanffuiiwlcntum Lindr., which belongs with 

 Puccinia poJiigoni-umphihii Pers., in having the peridia less exserter* \ind 

 less recnrved, and in having larger spores. 



38. Aecidium Byrsonimatis P. Henn. Hedwigia 34:101. ISOo. 

 Aecidium hyrsonimaticola P. Henn. Hedwigia 34:322. 1895. 

 LndopJiyllum singulare Diet. & Holw. Bot. Gaz. 31 :330. 1901. 

 Aecidium Byrsonimae Kern & Kellerm. Jour. Myo. 13:24. 1907. 

 On MALPHIACEAE: 



Byrsonima era us if alia (L.) DC, Guatemala, Jalisco. 

 TYPE LOCALITY: Goyaz, Brazil, on Byrsonima sp. 

 DISTRIBUTION: Central Mexico and southward. Also in South Amer- 

 ica. 



A strikingly characteristic form with conspicuous poridin ; often pro- 

 duces hypertrophy. 



39. Aecidium XantlioxyU Peck, Bot. Gaz. 6:27;". 18S1. 

 On RUTACEAE: 



Xanthoxyhim americamim Nutt., Iowa, Kansas, Missouri, Nebraska. 



Xanthori/lum Claia-lferculis L. (X. Caroliimiiium Lam.), Texas. 



Xauthoxylum Clava-Ilcrculis fruticosum (A. Gray) S. Wats., Ala- 

 bama. 

 TYPE LOCALITY': Decorah, Iowa, on Xanthoxylum amcricanum. 

 DISTRIBUTION: Iowa and Nebraska south to Texas and Alabama. 

 EXSICCATI : Carleton, Ure<l. Am. 6; Barth. N. Am. Ured. 102: Ellis, N. 



Am. Fungi 1013; Ellis & Ev. Fungi Columb. i//77; Rab.-Wint. Fungi 



Eur. 292S; Sydow, Ured. lo.',S. 



A characteristic species, probably belonging with some grass-inhabiting 

 Puccinia. 



40. Aecidium polygalinum Peck, Bot. Gaz. 6 :27.j. 1881. 

 On POLYGALACEAE : 



Poiygala Hcnega L., Iowa, Michigan, Wisconsin. 

 TYPE LOCALITY : Ann Arbor, Michigan, on Polyyala Senega. 

 DISTRIBUTION: Upper Mississippi valley. 



