Part 1, 1906] USTILAGINACEAE 35 



compressed laterally and so appearing oblong to irregularly polygonal or subcircular accord- 

 ing to view, minutely pitted, 14-22 fi in length. 



On Juncaceae : 



Jiincus acuminatus^ Mississippi. 

 Juncus effusus, New Jersey. 



Juncus tenuis, Connecticut, Illinois, Iowa, Massachusetts, New Jersey, New York, Ohio, 



Pennsylvania, Vermont, Wisconsin. 

 Juncus sp., Massachusetts, North Carolina ; Mexico. 

 Type locality : Bethlehem, Pennsylvania, on Juncus tenuis. 



Distribution: New England to Wisconsin, North Carolina, and Mexico ; also in South 

 America. 



'Illustrations : Bull. Torrey Club 12 : pi. 50; Bull. Conn. Geol. Nat. Hist. Surv. 5 : /. 28. 



Exsiccati : Seym. & Earle, Econ. Fungi 51, C 6, C 103 ; Ellis & Ev. Fungi Columb. 472; 



Kellerm. Ohio Fungi 66; Ellis & Ev. N. Am. Fungi 290; Thiim. Myc. Univ. 1622 ; Rab.-Wint. 

 Fungi Eur. 2901. 



11. Cintractia axicola (Berk.) Comu, Ann. Sci. Nat. VI. 15 : 279. 1883. 



Ustilago axicola Berk. Ann. Mag. Nat. Hist. II. 9 : 200. 1852. 

 Ustilago axicola var. Berk. Grevillea 3 : 59. 1874. 



UsHlago Fimbristylis Thiim. Bull. Torrey Club 6 : 95. 1876. (Type from Virgrinia, on Fimhristylis 

 auiumnalis. ) 



Sori usually at base of peduncles or pedicels, rarely in the spikelets, usually roundish, 

 about 3-5 mm. in diameter, at first with whitish false membrane covering the olive-black 

 agglutinated spore-mass, but this soon disappearing and spores becoming less firmly agglu- 

 tinated ; sterile cells usually indefinite through gelatinization of wall, cellular or somewhat 

 thread-shaped, with little or no lumen ; spores reddish-brown, compressed laterally and so 

 appearing oblong to subcircular according to view, often somewhat angled, smooth, 12-18^ 

 in length. 



On Cyperaceae : 



Fimbristylis autumnalis, Alabama, Delaware, Mississippi, Virginia. 



Fimbristylis diphylla, Porto Rico. 



Fimbristylis Holw ay ana ^ Mexico. 



Fimbristylis sp., Costa Rica, Cuba, Jamaica, Mexico, San Domingo, St. Kitts. 

 Type locality: San Domingo, on "some scirpoid plant " {FiMbristylis sp.]. _ 

 Distribution : Delaware to Mississippi, Mexico, Costa Rica, and the West Indies. 

 Illustration : Ann. Sci. Nat. VI. 15: pl.'15,f. 1-3. 

 Exsiccati: Seym. & Earle, Econ. Fungi Jj*^; Sydow, Ust. 219. 



Cintractia axicola minor Clinton, Jour. Myc. 8: 143. 1902. Spores smaller, 10-13 m in length. 

 On Cyperaceae : Cyperus Grayii, New York ; Cyperus sphacelatus, Porto Rico. Exsiccati : 

 Ellis & Ev. N. Am. Fungi 2423. 



12. Cintractia utriculicola (P. Henn.) Clinton, Jour. Myc. 8 : 143. 1902. 



Cintractia leucoderma f. utriculicola P. Henn. Hedwigia 34: 336. 1895. 



Cintractia axicola i. spicularum Juel, Bih. K. Sv. Vet.-Akad. Handl. 23(3)iO: 7. 1897. 



Sori in ovaries, ovoid to subspherical, chiefly 3-6 mm. in length, covered by evident 

 whitish false membrane that ruptures irregularly from the apex disclosing a semi-agglu- 

 tinated black spore-mass ; sterile cellshyaline, chiefly subspherical, usually semigelatinized ; 

 spores dark reddish-brown, often subopaque, with irregular lighter areas, somewhat com- 

 pressed laterally and so appearing oblong to circular according to view, smooth, 11-16 ^ in 



length . 



On Cyperaceae : 



Rynchospora corymbosa {R. aurea), Porto Rico. 



RynChospora sp., Mexico. 

 Type locality : Brazil, on Rynchospora gigantea. 

 Distribution : Porto Rico and Mexico ; also in South America. 

 Exsiccati : Seym. & Earle, Econ. Fungi 105 ; Sydow, tJst. 220. 



13. Cintractia leucoderma (Berk.) P. Henn. Hedwigia 34 : 335. 1895. 



Ustilago leucoderma Berk. Ann. Mag. Nat. Hist. II. 9 : 200. 1852. 



Cintractia Krugiana Magn. Bot. Jahrb. 17: 490. 1893. (Type from Porto Rico, on Rynchospora 



CiJricHalffinis Peck, N. Y. State Mus. Bull. 67: 28. 1903. (Type from New York, on Ryn- 

 chospora macrostachya.) 



Sori surrounding peduncles or pedicels or often involving base of the rachis (some- 

 times even on stems), forming conspicuous elongate bodies 7-30 mm. in length, covered 

 with a thick white false membrane that gradually flakes away, leaving exposed the firmly 



