1918 Zellerj on Marine Fungi 123 



delicate protoplasmic threads. These hyphae are very minute and often 

 can barely be detected and distinguished from the cytoplasm of the host. 

 The zoospores are globose, 2.5 — 3 /x in diameter, hyaline, uniciliate and 

 contain one prominent oil globule. The zoospores are released from the 

 zoosporangium through an irregular aperture. 



Stemphylium Codii, sp. nov. (PI. 20, Fig. 8), Epithelio-sori, ubi 

 adsunt, irregulares, non limitati ; hyphae subramosae, septatae, hyalinae, 

 dilute maturitate fulvescentes, 5 — 7 fi; conidia subglobosa vel ellipsoidea, 

 saepe irregularia, sessilia aut breve-pedicellata, apice rotunda, base late 

 rotundata, 3 — pluri-septata, septis constrictis, 37 — iGX^-l — 30 /i,. 



Habitat in thallis mortuis Codii mucronati. Washington. Aestate. 



Clusters of utricles and branches of Codium mucronatum attacked by 

 this fungus were pallid green, and where the fungus was abundant there 

 was considerable distinegration. The sori of Stemphylium Codii are 

 usually endothelial and very scattered and ramose, when superficial they 

 are irregular and not definitely limited. The mycelium is somewhat 

 branched and made up of septate, very slightly lomented, hyaline hyphae 

 which are 5 — 7 /a in diameter. At maturity the hyphae change to dilute 

 fulvescent in color. The conidia are borne on the prostrate mycelium, 

 sessile or short pedicelled, but sometimes intercalary. They are subglobose 

 to ellipsoid and often irregular in form, 3 — many-septate; septate con- 

 stricted, dark brown, 37 — 46X24 — 30 ju.. When the conidia are pedi- 

 cellate the tips are rounded and the bases are broad and rounded. 



