482 Durand : Classification of the Fleshy Pezizixeae 





Cyathicula coronata (Bull.) De Not. PL 30, Fig, 7 



This little plant is so characterized by the white setose teeth 

 with which the margin of the cup is ornamented that it is not 

 likely to be confused with any other. 



The medullary portion of the stem is formed of a dense mass of 

 hyphae, 2 jx in diameter, running longitudinally and closely com- 

 pacted together. As the cup expands at the summit of the 

 stem, these hyphae spread out toward the margin, filling the 

 whole central portion of the cup. A thin subhymenial layer of 

 this tissue, more closely compacted than the rest, is the hypothe- 

 cium. The ectal hyphae, especially at the sides of the cup, are 

 more closely interlaced, forming a denser stratum beneath the 

 outer excipulum. 



The ectal excipulum is a distinct uniform layer on the sides of 

 the stem and cup. The loosely interwoven hyphae composing it 

 extend obliquely outward from the medullary layer within. The 

 surface hyphae are more closely interwoven. The margin, with 

 the teeth characteristic of the genus, is formed by a direct upward 

 prolongation of the ectal excipular threads. 



Chlorosplenium aeruginosum (Oed.) De Not. PI. 30, Fig. 9 



This plant may be known by the clear verdigris -green color 

 of the stem and cup, and by the deep green color which the 

 mycelium imparts to the wood on which it grows. 



The hypothecial layer is thin and but little differentiated. The 

 medullary portion is in all respects similar to that of the other 

 Helotiaceous plants described, except that the outer hyphae are 

 not the more compacted. In the ectal membranous excipulum the 

 threads are a little less closely interwoven. . 



The green color so characteristic of this genus is due to green 

 granules deposited in the excipulum. Scattered green granules oc- 

 cur throughout the layer, but at the surface they become so nu- 

 merous as to obscure the hyphae. Irregular masses occur also on 

 the surface, causing it to appear furfuraceous. 



Phialea cyathoidea (Bull.) Gill. 



This little plant grows on decaying twigs and resembles a 

 Cyathicula without teeth. 



