106 NOTICES OF NORTH AMERICAN FUNGI. 



On fallen branches. Car. Iiif, No. 4913. New England, 

 Sprague. No. 5399. 



Mycelium decumbent, giving, off the long pedicels of the cask- 

 shaped spores, -which have many horizontal and vertical septa, in- 

 termixed with acute dark threads. 



645. Helicoma Bexkeleii. Curt. — Floccis e communi basi radi- 

 antibus ; sporis apicalibus, spiris binis compactis pluriseptatis. 



On Liquidambar. Car. Inf. Curtis. No. 1775. Ravenel. No. 

 1599. On Fraxinus. No. 1533. 



Mycelium consisting of dark creeping articulated threads, which 

 send off short branches, which divide above in a radiating manner, 

 each division terminated by a spore consisting of two compact, 

 many-septate spirals, •001--0013 in diameter. These were sent out 

 as Helicoma binale, and its variety, apertiun, but were published by 

 Curtis under the above name. 



646. Helicoma Cuirtisii. ^.—Floccis flexuosis elongatis ; sporis 

 6-septatis. 



On Salix Babylonica. Santee River. No. 1622. 



Mycelium creeping, sending off elongated flexuous threads ; 

 spores with about seven uninucleate joints, the terminal one acute. 

 This is perhaps too near H. Mulleri. 



* Polythxincium Txifolii. Kze. — On leaves of red clover. Fort 

 Maklen, West Canada (Dr. Maclagan). No. 434. 



* Cladospoxium hexbarum. Lh. — Oi\ decayed leaves from various 

 localities. 



647. Cladospoxium pexsonatum. B. 3) 6.— Maculis orbicularibus 

 fuscis ; floccis brevibus ; sporis oblon^is clavatisque. 



On leaves of Arachh hypogcea. Santee River. Ravenel. No. 

 1612. Looking very like a Pnccinia. 



Forming orbicular brown spots ; flocci short, irregular ; spores 

 terminal, oblong, or clavate. A variety occurs on Cassia occi- 

 dentalis. Car. Inf. No. 1748, which, amongst the usual threads, 

 has others which are slender, articulated with longer oblong uni- 

 septate spores. 



648. Cladospoxium effusum. B. <|- C— Effnsum tenue ferm- 

 gineum ; floccis tenuibus flexuosis ; sporis curvis. 



On Pohjgonwn punctatiim. Society Hill. Car. Inf. No. 3775. 

 On Lobelia j^uberula. No. 1742. On Lobelia syphilitica and 

 Nabalus altissima. Pennsylvania, Michener. No. 4036, 3502. 



Forming a thin ferruginous stratum, consisting of delicate 

 flexuous threads ; spores curved. These all seem to belong to one 

 species, but I have seen spores in the first only. 



649. Cladospoxium compactum. B. Sc (7.— Punctiforme ; floccis 

 tenuibus inarticulatis compactis ; sporis breviter fusiformibus. 



On leaves of Arundinaria. No. 3767. 



Forming little dark specks, in which the threads are closely 



