Helotium 131 



Phillips was in error in making Cihoria Sydoiviana synonymous 

 with Helotium renisporum. 



27. Helotium luteovirescens (Rob.) Seaver, comb. nov. 



Peziza luteovirescens Rob. in Desm. PI. Crypt. Fr. 1541. 1846; Ann. Sci. Nat. 



III. 8: 188. 1847. 

 ?Peziza longipes Peck, Bull. Buffalo Soc. Nat. Sci. 2: 295. 1875. 

 Peziza pallidovirescens Phill.; Phill. & Plow. Grevillea 6: 24. 1877. 

 Helotium sulfurellum Ellis & Ev. Bull. Torrej- Club 10: 98. 1883. 

 Ciboria tahacina Ellis & Holw.; Arthur, Bull. Geol. Nat. Hist. Surv. Minn. 3: 



35. 1887. 

 Ciboria luteovirescens Sacc. Syll. Fung. 8: 206. 1889. 

 Ciboria sulfurella Rehm; Durand, Bull. Torre>- Club 29: 461. 1902. 

 ?Phialea anomala Peck, Bull. N. Y. State Mus. 167: 29. 1913. 



Apothecia gregarious, or scattered, stipitate, reaching a 

 diameter of 2-5 mm., sulphur-yellow when fresh with a tinge of 

 green; hymenium concave, or plane; stem very variable in length, 

 sometimes as long as 2 cm. or often very short; hymenium con- 

 cave, plane, or slightly convex, darker than the outside of the 

 apothecium, reddish, or reddish-brown, when dry entire apothe- 

 cium almost black; asci clavate, 8-spored, reaching a length of 

 75-90 ,u and a diameter of 7-10 ix\ spores 1-seriate with the ends 

 overlapping, ellipsoid, 2>-5 X 10-12 m; paraphyses filiform. 



On sticks and leaf petioles, Fraxinus especially; also reported 

 on Acer, Tilia and Platinus. 



Type locality: Kurope. 



Distribution: New England to North Dakota, Iowa and 

 Pennsylvania; also in Europe. 



ExsiccATi: Ellis, N. Am. Fungi 1Z75 (as Helotium sul- 

 furellum); Rehm, Ascom. J8S(). (as Ciboria tabacina). 



Durand has reported Ciboria luteovirescens from this country, 

 but regards Helotium sulfurellum as distinct mainly on color. 

 He states that the latter is never green. The writer has often 

 collected this in Iowa on ash petioles and described it as sulphur- 

 yellow with a tinge of green. It seems doubtful if the two forms 

 are distinct, although for lack of material it is difficult to be 

 certain. 



28. Helotium citrinum (Hedw.) Fries, Summa Veg. Scand. 355. 

 1849. (Plate 104. Fig. 2.) 



?Peziza lenticular is Bull. Hist. Champ. Fr. 248. 1791. 

 Oclospora citrina Hedw. Descr. 2: 33. 1789. 

 Peziza citrina Batsch, Elench. Fung. Cont. 2: 95. 1789. 

 Peziza confluens Schw. Trans. .\m. Phil. Soc. II. 4: 176. 1832. 



