32 NORTH AMERICAN FLORA [V01.UME 7 



Distribution : Newfoundland and New England to Florida and Mexico ; also in Soutli 

 America, Europe and Africa. 



Illustrations : Ann. Sci. Nat. III. 7 : pi. 5,f. 31; Bull. Soc. Nat. Mosc. 40i : pi. J, /. 9. 

 ExsiCCATi : Seym. & Earle, Econ. Fungi C7. 



y 



2. Cintractia Taubertiana (P. Henn.) Clinton, Jour. Myc. 8 : 142. 1902. 



Usiilago Taubertiana P. Henn. Bot. Jahrb. 17 : 525, 1893. 



Similar to C. Montagnei^ except spores medium- to light-brown, usually angular, lateral 

 wings apparently entirely lacking, usually 8-13 /^ in length. 



On Cyperaceae: 



Rynchospora alba, Massachusetts, New Jersey. 



Rynchospora axillaris {R. cephalaniha) , Mississippi. 



Rynchospora cymosa, Maryland. 



Rynchospora fascicularis y Florida. 



Rynchospora inexpansa, South Carolina. 



Rynchospora sp. , Alabama, Texas. 

 Type locality : Minas Geraes, Brazil, on Rynchospora tenuis. 

 Distribution : Massachusetts to Florida and Texas ; also in South America. 



3. Cintractia Psilocaryae (Tracy & Earle) Clinton, Jour. Myc. 8 : 142. 1902. 



Usiilago Psilocaryae Tracy & Earle, Bull. Torrey Club 26 : 493. 1899. 



Sori in ovaries, inconspicuous, hidden by glumes, in time powdery ; spores dark reddish- 

 brown, somewhat laterally compressed and so oval to circular in cross-section according to 

 view, usually conspicuously angled, with very dark and irregularly thickened walls (often 

 3 /i), under an immersion lens with the compressed sides showing faint reticulated appear- 

 ance at center and pits toward the circumference, chiefly 12-15 /^ in length. 



On Cyperaceae : 



Psilocarya nitens, Florida, Mississippi. 



Psilocarya scirpoides, Massachusetts, Rhode Island. 

 Type locality : Horn Island, Mississippi, on Psilocarya rync ho sp oroides {P. nitens). 

 Distribution : Massachusetts and Rhode Island ; Florida and Mississippi. 



4. Cintractia limitata Clinton, Proc. Bost. Soc. Nat. 



Hist. 31 : 399. 1904. 



Sori in the spikelets, infecting only part, at first concealed by the enveloping glumes 

 but with the semi -agglutinated spore-mass finally becoming powdery and showing in the 

 vicinity of the infected spikelets as a purplish-black powder ; spores chiefly dark reddish- 

 brown, ovate or ovoid to chiefly subspherical or spherical, occasionally somewhat polyhedral, 

 often with pitted contents, smooth, 9.5-14 ^ in length. 



On Cyperaceae : 



Cyperus ligtilaris, Porto Rico. 

 Type locality : Mayaguez and San Juan, Porto Rico, on Cyperus ligularis. 

 Distribution : Known only from Porto Rico. 



5. Cintractia Cyperi Clinton, Proc. Bost. Soc. Nat. Hist. 31 : 400. 1904. 



Sori in the interior of the spikelets, infecting all in the head, hidden by the enveloping 

 glumes, scarcely modifying appearance of infected parts, so that diseased heads are told from 

 the sound only by slightly darker color, in time shedding somewhat the brown-black gran- 

 ular spore-mass ; spores reddish-brown, more or less agglutinated but easily broken up into 

 single spores, oblong to polyhedral but chiefly irregular, apparently smooth but with epi- 

 spore often showing darker lines due to pressure of spore-mass, 12-18 /«, or the most elon- 

 gate 22 ;ii, in length. 



On Cyperaceae : 



Cyperus filiculmis, Connecticut. 

 Type locality : North Haven (sand plains), Connecticut, on Cyperus Jiliculmis . 

 Distribution: Connecticut. 

 KxsiCCATi : Seym. & Earle, Econ. Fungi C 102. 



6. Cintractia subinclusa (Korn.) Magn. Abh. Bot. Ver. Prov. 



Brand. 37: 79. 1896. 



Ustilago subinclusa Korn.; Rab. Hedwigia 13 : 159. 1874. 

 Anlhracoidea subinclusa Bref. Unters. Gesammt. Myk. 12: 146. 1895. 



Sori in the ovaries, often concealed by the perigynium, subspherical, about 2-4 mm. in 



