264 FUNGUS-FLORA. 



irregularly 2-seriate, hyaline, continuous, smooth, straight or 

 very slightly curved, 8-10 X 1*5 ft; paraphyses slender,, 

 hyaline, very slightly incrassated at the tip. 



On the stems of grasses Dactylu*, &c. near the root. 



Distinguished from H. rhizophilum, with which it was 

 mixed in the Kew herbarium, by the absence of a stem r 

 undulating disc, and smooth exterior. Probably not un- 

 common ; specimens are noted from Surrey and Norfolk. 



Helotium rhizophilum. Cke., Hdbk., n. 2155. 



Scattered or gregarious, stipitate, at first closed and pear- 

 shaped, finally expanding until nearly or quite plane, margin 

 even, entire ; disc clear deep yellow, externally pale, covered 

 with a delicate, whitish down, 23 mm. across ; stem 47 

 mm. long, slightly narrowed at the base as a rule, pale and 

 downy; asci narrowly clavate, apex slightly pointed, pedicel 

 slender, 8-spored ; spores irregularly 2-seriate, hyaline, 

 continuous, cylindrical, straight, 12 x 2 /x; paraphyses 

 hyaline, slender, not thickened upwards. 



Ciboria rhizophila, Fuckel, Symb. Myc., p. 312. 



Hymenoscypha rhizophila, Phil., Brit. Disc., p. 144. 



On rhizomes of various grasses. 



Specimen examined in Fckl., Fung. Ehen., n. 1598. 



Distinguished from allies by the bright yellow disc, 

 minutely downy exterior and long stem, and habitat. 



Helotium eburneum. Gillet, Disc. Fr., p. 160. 



Scattered or gregarious, minute, ivory-white, almost 

 globose and closed at first, then expanding, glabrous, margin 

 minutely fimbriate, soft, about %^ mm. across; stem short, 

 slender, often more or less incurved ; cortex minutely 

 parenchymatous, cells elongated in the direction from base 

 to margin, and running out at the edge, into short, slender 

 hyphae of irregular length; asci narrowly cylindric-clavate, 

 apex slightly pointed, 8-spored ; spores irregularly 2 -seriate, 

 hyaline, continuous, straight or slightly bent, narrowly 

 cylindrical, 4-5 x 1 p. ; paraphyses tlender, cylindrical, 

 hyaline. 



Peziza eburnea, Roberge, in Desm., Crypt. France, ed. i., 

 n. 2004, and in Ann. Sci. Nat., 1851, p. 323. 



Hymenoscypha eburnea, Phil., Brit. Disc., p. 145. 



Phialea eburnea, Sacc., Syll., viii. n. 1065. 



