54 



Mycologia 



My thanks are due to Dr. Clements, of the University of Min- 

 nesota, and Dr. Bessey, of the University of Nebraska, for infor- 

 mation concerning this species. 



4. Physospora elegans Morg. Jour. Cine. Soc. Nat. Hist. 17: 44. 

 1875. Not Physospora elegans Cav. " Effused thin, flocculose, 

 then pulverulent, bright ochraceous ; hyphae long, slender, creep- 

 ing, septate, dilute ochraceous, much branched and interwoven, 

 producing everywhere short erect inflated vesicles. These vesicles 

 ellipsoid, obovoid, or quite irregular, 14-20 X 9-12 mic. bearing 

 at the apex usually two (1-3) spores on short blunt pedicels; 

 spores globose, ochraceous 16-20 mic. in diameter. 



" Growing on rotten oak trunks. Preston, Ohio." 



The type specimen is no longer in existence but through the 

 kindness of Dr. Macbride, of the University of Iowa, the original 

 drawing made by Mrs. Morgan was sent to me for examination. 

 The species is remarkable for the many clamp connections in the 

 hyphae. It is closely allied to the genus Zygodesmus. Possibly 

 it would be better to establish a new genus for this species. 



5. Rhinotrichum muricatum Ellis and Ev. Proc. Acad. Phila. 

 86. 1 89 1. The specimen in the New York Botanical Garden 

 labeled with this name is very clearly not a Rhinotrichum. 



6. Rhinotrichum corticioides Cooke, Grevillea 13 : 27. 1883. 

 The specimen was collected in South Carolina by Ravenel. It 

 belongs to the Thelophoraceae, probably Hymenochaete Ellisii 

 Berk, and Cooke. Part of the type was examined. 



7. Rhinotrichum macrosporum Farlow. See under the genus 

 Olpitrichum. 



8. Rhinotrichum tenellum Berk. & Curt. See in a later paper 

 under the genus Gonatobotrys. 



9. Rhinotrichum cucumerinum Berk. & Curt. See in a later 

 paper under the genus Gonatobotrys. 



Olpitrichum Atkinson, Bot. Gaz. 19 : 244. 1894 



Saprophytic ; mycelium septate, branched, interwoven ; fertile 

 branches erect, simple or branched, septate, ultimate divisions 

 with flask-shaped fusoid or irregular processes (sterigmata) at 

 the top bearing the simple, hyaline or pale-colored spores. 



Type species, Olpitrichum carpophilum Atkinson. 



