DO 



" Minute (1 line across), round, plano-convex. Peritliecia small, 

 entirely hidden, connate, surface of the stroma roughened by the 

 ostiola, pruinose, sooty black. On rotten wood, Pennsylvania." 



Hypocrea Ravenelii, Berk. Grev. IV, p. 14, Rav. Car. V, 51, 

 Diatrype lateritia, Ell. Bull. Torr. Bot, Club, IX, p. 19, ^^Hypoxylon 

 myriangioides, B. & C," in Ell. N. A. F. 471, are all Melogramma 

 Bulliardi, Tul. Roumeguere, in his Fungi Gallici, 1 1 74, has issued 

 tlie same thing as Hypoxylonfuscum (Pcrs.). 



HYPOCRELLA, Sacc. 



SyU. II, p. 579. 



Stroma subcarnose, pulvinate, disciform or effused, bright colored 

 or dark. Perithecia more or less perfectly buried in the stroma. Asci 

 cylindrical, 8-spored. Sporidia filiform, nearly as long .is the asci, 

 frequently separating into short sections or joints. 



H. tuberiformis, (B. & Rav.) 



Hypocrea tuberiformis, B. & Rav. Grev. IV, p. 13. 



Hypocrella tuberiformis, Atkiuson, Bot. Gaz. XVI, p. 282, pi. XXV, figs. 1-6. 



Stroma subglobose, 1 cm. or more diam., entire, lolled or divided, 

 fastened to the leaf by a mycelium of whitish, radiating threads. At 

 first thickly covered with erect, fertile hyphs 35-40 x 2-3 /.(, bearing 

 oval or broadly fusoid, inequilateral, hyaline, continuous conidia 7-10 x 

 3|-4 II. When mature, a section shows three different colored strata; 

 the inner white, the intermediate one light ochre, and the outer one 

 cinnamon. Perithecia sessile, or only their rounded bases immersed, 

 subcylindrical, a little bi^oader in the middle, cinnamon-color, 3-20 or 

 more together, 1 mm. long, \ mm. broad, frequently branched, the 

 bases of 2-3 joined, and the cavities confluent below. Asci very largo, 

 450-750 X 14 //, tapering to a slender point below, more gi'adiinlly 

 towards the truncated apex. Sporidia linear, hyaline, pluriguttulate 

 and pluriseptate, rounded at the ends and separating at the septa. 



On Arundinaria, Carolina (Ravenel), Alabnma (Atkinson). 



H. phyllogena, Mont. Syll. 71 1. 



Stroma pulvinate, hemispherical, base constricted and orange- 

 colored. Perithecia peripherical, erect, ovate and, with the punctifbrm 

 ostiola, bright purple, sunk in the upper part of the stroma, which is 

 of the same color. Asci linear with the apex cap-shaped or obtusely 

 conical. Sporidia linear, cui'ved, finally breaking up into segments 

 16-18 X 2 /i. 



On living leaves of Gentaurea speciosa, Cayenne, South America. 



We have included this species, which will, not improbably, yet i)0 

 founil in Southern Florida or Mexico. 



