NOTICES OF NORTH AMERICAN FUNGI. 101 



linear or clavate pluriseptate, sometimes much attenuated below ; 

 when perfect there is a nucleus in each articulation. 



620. Gxaphium explicatuxn. B. <f- C. — Atruni gregariuni ; floccis 

 sursum explicatis ; sporis globosis pallidioribus. 



On twigs of Quercus Catesbcei. Car. Inf. No. G96. Q. nigra. 

 No. 1096. 



Black, gregarious ; component flocci much expanded above, flexu- 

 ous, the tips bearing little clusters of globose paler spores. No. 

 752 is probably a stylosporous state of some Sphinctrina. 



621. IMEonotospoza setosa. B. ^- C. — Floccis articulatis, apice 

 simjilicibus vel divisis ; sporis obovatis. 



On decayed wood in moist places. Car. Inf. No. 2509. 



Threads black, septate, simple, or with a single short division, in 

 which case the obovate shortly pedicellate spore is lateral. Occa- 

 sionally at the base of the spore there are one or two septa, and 

 more rarely three, with vertical divisions. 



* (Edemium atzum. Fr. — On leaves of Bignonia capreolata. 

 Santee River. No. 1025. On twigs. Car. Inf. No. 3863. 



622. <Edeiniuxn sparsum. B. ^' Rav. — Floccis laxe congestis arti- 

 culatis fuscis ; sporangiis obovatis, sporis minutis. 



On bark of Platanus. Car. Inf. Ravenel. No. 1428. 

 Flocci loosely compacted, free above, and sometimes divided 

 once ; sporangia large, obovate, terminal ; spores minute. 



* Fodospozium zigiduxn. Scliwein. — On bark of various trees* 

 Car. Sup. On Rhus radicans. No. 1944. On plum. Car. Inf. No. 

 1414. On Ampelopsis bipinnata. No. 2159. A small variety. 

 No. 1287. Ravenel, appears to be a barren state. 



623 Fodospozium bziazeus. B. ^ C. — Mycelio reticulato ; sporis 

 longissimis flexuosis pluriseptatis e ramulis brevissimis oriundis. 



On dead branches. Car. Inf. No. 1396. 



Springing from decumbent reticulated threads ; branchlets very 

 short; spores flexuous, elongated, acute, 15-20 septate, attenuated 

 above. A very fine species, confirming Schweinitz's genus, which 

 diffei's from Hehninthosporium dendroideum, B. & Br., in the con- 

 gested stem. 



624. Helminthospoziuxn siliquosuxn. B. 8^ C. — Floccis brevissi- 

 mis e mycelio repente oriundis ; sporis longissimis apicalibus 

 linearibus flexuosis obtusis pluriseptatis. 



On branches of Viiis vulpina and Smilax. Car. Inf. No. 2347, 

 2519. 



Mycelium of coarse creeping threads, which bear extremely short 

 erect processes, terminated by very long linear obtuse spores, with 

 from fifteen to twenty septa. Very distinct from every other species. 



* Helminthospozium maczocazpon. Grev. — On branches of 

 various trees. Car. Inf. No. 6147. On Castanea vesca. Car. 

 Sup. No. 434. On Cornus florida. No, 854. On Magnolia 

 auriculata. No. 4417. 



