62 NOTICES OF NORTH AMERICAN FUNGI. 



584. Isaxia radiata. B. 4- C*.— Prostr<ata radians albida receptaculis 



filiformibus obtiisiusculis ; sporis globosis. 



On pine wood. Alabama, Peters. No. 6397. 



Forming little patches on the wood, consisting of radiating fili- 

 form, rather obtuse, whitish receptacles, which become yellowish 

 when dry, simple, except at the very base, composed of jointed 

 threads, which towards the base are less closely compacted and 

 without septa ; spores globose, -0002 in. diameter. 



585. Isazia brevis. £. & C. — Candida, receptaculis brevibus line- 

 aribus obtiasis fasciculatis hispidis ; sporis globosis. 



On decayed wood. Pennsylvania, Michener, No. 3607. 

 Receptacles forming little fascicles, very short, white, at length 

 pale yellow, linear, obtuse, hispid; spores globose. 



586. Isazia congesta. B. & C. — Receptaculis congestis gilvis deor- 

 sum nodosis apice nodulosis ; sporis minutissimis, elliptico- 

 oblongis. 



On Sphmna detista. Car. Inf. No. 3014. 



Foraiing little reddish-grey groups, composed of irregular pro- 

 cesses, which below are slender, straight, with three or four knots, 

 incrassated above, and nodular ; spores confined to the tips, very 

 minute, oblong, elliptic. This is possibly the young state of some 

 Hypoxylon. Besides the above are known conditions of Sphceriacei 

 under the following numbers : — Isaria umbrina, P. On Platanus. 

 Car. Inf. No. 3020. Ravenel. No. 1421. Isaria SjJhingopJnla, 

 Schwein. No. 2986. Isaria farinosa. No. 1727. Young Xylaria, 

 No. 5475. Alabama, Peters. No. 3199, on a chrysalis, appears 

 to be something closely allied to the disease m silkworms called 

 Pebrine. 



* Ceratium hydnoides. A. <^ S. — On dead wood. Car. Inf. No. 

 1125,1128. Alabama, Peters. No. 4535. Beaumont. No. 4610. 



587. Ceratium crustosum. B. S^ C. — Receptaculis brevibus in 

 plagas parvas Candidas porosas congestis ; sporis oblongis. 



On decayed wood. New Jersey. No. 4600. 



Forming little crust-like white porous spongy patches, one to 

 two lines or more in diameter ; receptacles short ; spores oblong, 

 •0005 long, sometimes elliptic or cymbjBform, very abundant. No. 

 5684. New England. Murray. May be a distinct species, but 

 the specimens are in bad condition. 



* Pachnocybe subulata. B. — On wood of Acacia Julihrissin, &c. 

 Car Inf. No. 1155, 1168. 



588. Pachnocybe rosea. B. d: C. — Minuta rosea clavata ; sporis 

 elongato- oblongis ; endochromate utrinque retracto. 



On bark of Rohinia. Car. Inf. No. 1817. 



Minute, rose-coloured, receptacles cylindrical below, dilated up- 

 wards, and at length clavate ; head tomentose ; spores oblong, with 

 the endochrome retracted to either end ; sometimes slightly curved. 



