20 NORTH AMERICAN FLORA [Volume 7 



56. Ustilago echinata Schrot. Abh. Schles. Ges. Abth. Nat. Med. 



1869-72 : 4. 1870. 



Ustilago verrucosa Vesterg. Jahreskat. Wiener Krypt. Tausch. 3. 1897. (Type from Sweden, on 



Baldingera arundhiacea .) Not U. verrucosa Schrot. 1896. 

 Ustilago Vestergreni Sacc. & Sydow ; Sacc. Syll. Fung. 14: 413. 1899. 



Sori in leaf-blades and sheaths, forming conspicuous elongate striae often running 

 greater length of leaf, upon rupture forming dusty or semi-agglutinated brown-black spore- 

 lines ; spores rather dark reddish-brown, ovoid to spherical, provided with conspicuous 

 irregular scale-like tubercles, which are rarely semi-anastomotic, chiefly 14-17 ^, the most 

 elongate rarely 19 /i, in length. 



On Poaceae : 



Phalaris arundinacea, Nebraska, "Washington. 

 Type locality : Silesia, Europe, on Phalaris arundinacea. 

 Distribution : Nebraska and Washington ; also in Burope. 



57. Ustilago Arthurii Hume, Proc. Iowa Acad. Sci. 9 : 233. 1902. 



tucacea. ) 



(Typ. 



Sori in the enfolded leaves, forming linear striae chiefly on their inner surface, which 

 soon become obliterated by the dusty reddish-brown stratum of spores filling the interior ; 

 spores olive-brown, rather regular, chiefly subspherical or spherical, abundantly covered 

 with conspicuous tubercles or scales, rarely very slightly anastomosing, 12.5-16 ^in length. 



On Poaceae : 



Panicularia americana {Glyceria grandis)^ Iowa. 



Scolochloa fes tucacea y Oregon. 

 Type locality : Spirit I^ake, Iowa, on Panicularia afnericana. 

 Distribution : Iowa and Oregon. 

 Illustration: Bull. Torrey Club 31 : 85,/. 4. 

 ExsiCCATi: Seym. & Earle, Kcon. Fungi C 135. 



58. Ustilago Heufleri Fuckel, Symb. Myc. 39. 1869. 



Ustilago Erythronii G. W. Clinton ; Peck, Bull. Buffalo Soc. Nat. Sci. 1 : 67. 1873. (Type from 



New York, on Erythrohium americanum J) 

 Ustilago Tulipae Wint. in Rab. Krypt. Fl. 1^ : 86. 1881. 

 l^iilago Orniihogali f. Erythronii De-Toni ; Sacc. Syll. Fung. 72 : 452. 1888. 



Sori in leaves, forming conspicuous rounded or often elongate pustules, covered by 

 a thin whitish membrane which upon rupture discloses a somewhat dusty black spore-mass ; 

 spores dark reddish-brown, ovoid or ovate to spherical, usually regular, thick- walled, 

 smooth but inner wall provided with more or less evident projections extending into outer 

 lighter-colored part, 13-22 ii in length. 



On IvILiaceae : 



Erythronium americanufn, Missouri, New, Jersey, New York, Pennsylvania. 

 Type locality : Vienna, Austria, on Tulipa sylvestris. 

 Distribution : New York to Missouri ; also in Europe. 

 Illustration : Bull. Soc. Nat. Mosc. 40i : pi. 3,f. 29. 



EJxsiCCati: Shear, N. Y. Fungi 83 ; KUis, N. Am. Fungi 1095 ; KHis & Ev. Fungi Columb. 

 471 ; Rab. Fungi Eur. 4207. 



59. Ustilago Vaillantii Tul. Ann. Sci. Nat. III. 7 : 90. 1847. 



Sori in anthers and other essential organs, filling the floral envelopes with a dusty 

 dark-olive mass ; spores variable, golden-brown, ellipsoidal to spherical, smooth, but inner 

 wall apparently obscurely echinulate, chiefly 7-12 /i in length. 



On IVILIACEAE : 



Scilla praecox (cult.), Massachusetts. 

 Type locality : Europe, on Muscari comosum. 

 Distribution : Massachusetts ; also in Europe. 



Illustrations : Ann. Sci. Natj, III. 7 : pL 3, /. 15-19 ; Brefeld, Unters. Gesammt. Myk. 12 : 

 pi. 6, f. 32-38 ; Bull. Soc. Nat. Mosc. 40i : pi. 3, /. 10 ; Schrot. Beitr. Biol. Pfl. 2 : pi. 12 J. 4. 



60. Ustilago Oxalidis Ellis & Tracy, Jour. Myc. 6 : 77. 1890. 



Sori in the seeds, inconspicuous (affected ovaries scarcely differing from the normal 

 except on dehiscence showing more or less of the seeds changed into reddish-brown dusty 



