IOWA DISCOMTCETES IQI 



to clavate. 8-spored; spores ovoid, oblong or clavate. simple, hya- 

 line. 



Distinguished from Helot turn hy the more slender stem. Two 

 species described from Iowa but probably many more occur. 

 KEY TO THE SPECIES. 



Plants occurring on acorns, hickorv-nut husks, etc.. 



stem often long P. fructiiiena. 



Plants on stems of Polygonum, stem usually short 



1 mm P. scutuJa fucata. 



Phialea fructigexa (Bull.) Gill., Discom. 99. 1879. 

 Plate 23. f. i. 



Peziza fnictigena Bull. Champ. France. 1: 236. 1S09. 

 Helotium fruciigcnum Karst.. Myc. Fenn. 1: 113. 1S71. 

 H y me nosey plia fructigena Phill. Brit. Discom. 135. 1887. 

 Hgmenoscyplia virgulfonim fructigeniim Rehm, Rabenh. 

 Kr>T)t. Fl. P: 783. 1896. 



Plants small, usually 1 to 3 mm. in diameter, at first closed, 

 then opening disc becoming concave or nearly plane, rather pale 

 yellowish, smooth : asci clavate. 8-spored : spores clavate. nearly 

 pointed at the smaller end. guttulate, 1-4 to IS by -4 to 5/z; para- 

 physes filiform, enlarged upwards. 



On deca^ang acorns and husks from hickory-nuts. Iowa City. 



Plants found to be abundant at times. The stems of the plants 

 of this species are quite variable in length sometimes being nearly 

 1 cm. while at other times the cups are almost sessile, the length 

 of the stem depending on the conditions as in other stipitate 

 forms. 



Phialea scutula fucata (Phill. "i Sacc. Syll. Fung. 8: 266. 



1889. 

 Hymenoscypha scutula fucata Phill.. Brit. Discom. 137. 1887. 



Plants similar in general appearance to the preceding but 

 smaller scarcely exceeding 1 mm. in diameter with the stem of 

 about the same length ; asci clavate. 8-spored ; spores clavate. 

 nearly pointed at the narrow end. 18 to 22 by 3 to 4/u; 2- to 3- 

 -guttulate, often appearing to be 1-septate. 



On dead stems of Polygonum, Mt. Pleasant. 



