June, 1000.] 



Mycological Bulletin Nos. 59 and 60 



237 



ANOTHER PEZIZA. 

 Arthur L. Smith. 



Peziza repanda Wahl. is a small, rather inconspicuous fungus growing 

 on old wet logs. Specimens were found May 11, 1906, on an old elm log 

 in the O. S. U. woods. In the dark, moist woods, one sees only a group of 

 light, fleshy fungi ; hut taken out into the sunshine, they hecome remarkably 

 ijeautiful objects. The cups are translucent, and the sunshine gives them 

 a delicate golden brown. This, with the purplish brown color of the dry 

 cup rims, produces an effect highly artistic. 



When first distinguishable, the future cup is a tiny white knot on the 

 surface of the log. This grows, so that soon a hollow sphere, with an 



S^.' 



%-p* 



ri . ISO. Pe-zi'-7..\ RE-rA:.'-rA. Marnifitd ."^kctcli if a portion of the fruifi'iir '--yrr 

 (i')ner i)ortion of ci:p) — showing a:.ci accompanied with paiafhyscx and three 

 spc.ris very highly magnified. 



opening at the top, is produced. But soon this begins to flatten and expand 

 laterally, at last producing an irregular flattened disk with small upturned 

 edges. The disks are irregular in outline. In diameter they vary from 

 2 — 6 cm. On the outside of the cup is a scurfy white layer. The remain 

 der is a fleshy tint. In drying the tissue becomes darker, and may even 

 reach a purplish brown. The exposed edges dry out and change color first, 

 then later the whole plant goes through the same change. 



'I'here are two primary layers in the structure of the Pezizas ; the inner 

 fruiting layer or hymerium, and the outer sterile tissue. This latter is 

 composed of several more cr less distinct parts, whose names would only 

 add to our burden. On the arrangement and structure of these sterile 

 layers, the classificaticn is largely basjd. E. J. Durand. of Cornell, the 

 authority on fleshy Discon-.jcetes, has largely extended the use of these 

 characters. 



On the hymenial surface are borne the asH, or largr mother cells of the 

 snores, and a few sterile ])araphyses. or accessory hairs. In these speci- 

 n'.ers t'.-.e latter ;.re few, vcrv uuieh less nunerous than in the cither 



