Part 1, 1906] USTILAGINACEAE 21 



spore-masses slightly larger than the uninfected seeds); spores golden-yellow, chiefly ovoid 

 to spherical, occasionally more elongate or irregular, coarsely verrucose, 13-20 fi in 

 length ; conidia produced in anthers, inconspicuous, ovoid to subspherical, hyaline, thin- 

 walled. 



On Oxalidaceae : 



Oxalis^ stricta, Connecticut, Illinois, Iowa, Kansas, Mississippi, Missouri, New York, 

 Wisconsin. 



Type locality : StarkviUe, Mississippi, on Oxalis siricta. 



Distribution : Connecticut to Wisconsin, Kansas and Mississippi ; also in South America. 

 Illustration : Bull. Conn. Geol. Nat. Hist.-Surv. 5 : /. J, 48. 



KxsiCCATi : Ellis & Ev. N. Am. Fungi 2424 ; Ellis & ^v. Fungi Columb. 470; Rab.-Wint.-Paz. 

 Fungi Eur. 4007; Seym. & Earle, Econ. Fungi C79, C 80. 



61. Ustilago vinosa (Berk.) Tul. Ann. Sci. Nat. III. 7: 96. 1847. 



Uredo vinosa Berk.; Tul. loc. cii.^ as synonym. 



Sori in the essential organs, forming purplish dusty spore-masses usually enwrapped 

 as a somewhat swollen body by the perianth ; spores very pale-violet, ovoid to spherical or 

 occasionally slightly irregular, thick-walled, ridged with very small reticulations (1m or 

 less in diameter), chiefly 7-10// in length. 



On Polygonaceae : 



Oxyria digyna^ California, Washington ; Alaska; Greenland. 



Oxyria sp., Wyoming. 

 Type locality : Scotland, on Oxyria reniformis. 



Distribution : Greenland, Wyoming, California, Washington and Alaska ; also in Europe. 

 Illustration : Brefeld, Unters. Gesammt. Myk. 12 : pi, 8^ f. 13-15. 



62. Ustilago violacea (Pers.) Fuckel, Jahrb. Ver. Nat. Nass. 15: 21. 1861. 



Uredo violacea Pers. Tent. Disp. Fung. 57. 1797. 

 Ustilago antherarum. Fries, Syst. Myc. 3 : 518. 1832. 



Sori inconspicuous, filling swollen anthers, soon rupturing and disclosing violet-col- 

 ored dusty mass of spores ; spores pale-lilac to almost hyaline, ovoid to spherical, occasion- 

 ally somewhat irregular, with rather conspicuous spore-wall covered with numerous minute 

 reticulations (1 ^ or less in diameter), chiefly 5.5-8.5 //• in length. 



On Caryophyllaceae : 



Alsine borealis {Stellaria horealis')^ Greenland. 



Arenaria groenlandica, Maine, New Hampshire, New York, Vermont. 



Cerastiuni maxiTnum, Alaska. 



Lychnis sp., Minnesota. 



Moehringia lateriflora {Arenaria lateriflora), Minnesota, Wisconsin. 



Moehringia lateriflora glabrescens {^Arenaria lateriflora glabrescens) , Washington. 



Silene acaulis, New Hampshire. 



Silene Lyallii (5. Douglasii Macounii) , Montana. 



Silene multicaulis , Washington. 



Silene telonensis^ Wyoming. 



Silene Watsoni, California, Washington. 

 Type locality : Europe, on Silene nutans. 

 Distribution : New England to California, Alaska, and Greenland ; also in South America, 



Europe, Asia and Africa. 



Illustrations : Ann. Sci. Nat. III. 7 : pi. 4, /. 12-19, pL 5,f. 23; Brefeld, Unters. Gesammt. 

 Myk. 5 : pi. 1; BuU. Soc. Nat. Mosc. 40^ : pi. 3, /. 17; Jahrb. Wiss. Bot. 7 : pi. 22, f. 1-26; Trans. 

 Wise. Acad. 12 : pi. 8-9, f. 8-22. 



Ustilago violacea major Clinton, Jour. Myc. 8 : 139. 1902. Spores deeper violet ,and chiefly 7- 

 12 ^ in length. On Caryophyllaceae: Silene Watsoni, Mt. Rainier, Washington. 



63. Ustilago Gayophyti Hark. Bull. Calif. Acad. Sci. 1 : 36. 1884. 



Sori in seeds, upon dehiscence of ovary showing as small somewhat dusty purple-black 

 masses ; spores rather dark-purple, ovoid or ovate to spherical, provided with small reticu- 

 lations (about 1 /i in depth and width), chiefly 12-18 ^ in length. 



On Onagraceae : cT^^ 



Gayophytum caesium , fj^tghy 



Gayophyium lasiospermum , Oregon. ,--r'7> 



Gavo-bhvium ramosissimum, California, Oregon, ffitaju . . 



Type locality: Summit, Placer County, Cii\iioT-i\i2.^'GrrGayophyh0nramosissimum. 



Distribution: Utah, California and Oregon. 



