Rev. M. J. Berkeley and Mr. C. E. Broome on British Fungi. 177 



540. D. grisewn, n. s. Griseum ; floccis parce ramosis ; spo- 

 risque cylindricis concatenatis, demum uniseptatis hyaliiiis. On 

 dead nettle stems, King's Cliffe, March 1850. 



Bluish gray, forming little patches ; flocci sparingly branched 

 almost from the base, as far as we have seen inarticulate ; spores 

 cylindrical, apiculate at either end, elongated, arranged in dicho 

 tomous chains, at length divided by a central septum. 



This is not like the other species, dark and opake. The line 

 of demarcation between the chains of spores and threads is 

 strongly marked. 



Plate YI. fig. 11. a. Flocci magnified j b. one of the spores to show 

 the mode of attachment ; c. perfect spores less highly raagnitied. 



541. Rliinotrichnm Bloxami, n. s. Sparsum candidum ; floccis 

 fertilibus sursum clavatis; sporis candidis subellipticis. On dead 

 wood, Rev. A. Bloxam, Twycross. We ha\e either this or a very 

 closely allied species from South Carolina. 



Patches irregularly effused, seldom continuous, white or cream- 

 coloured. Mycelium decumbent, white, septate. Fertile flocci 

 erect, sometimes very sparingly divided ; tips clavate, bearing 

 scattered spicules surmounted by subelliptic or slightly obovatc 

 spores, which are sometimes obtuse, sometimes apiculate. Occa- 

 sionally the ultimate articulations of the fertile threads are mo - 

 niliform and present the characters of Oidiiim. Very rarely the 

 penultimate joint has one or two spicules. 



This species comes near to R. repens, Preuss, but differs in 

 the white, not cinereous mycelium, and subcllijjtic, smooth, white,- 

 not bi'oadly obovate, wrinkled cinereous spoi-es. 



Plate VII. fig. 19. a. Flocci iu various states springing from mycelium ; 

 b. ditto, mycehum and spores move highly magnified. 



542. R. Thwaitesii, n. s. Epigseum flavum eflPusum ; hy- 

 phasmate contexto, floccis fertilibus adscendentibus dichotomis 

 apicibus leviter inci'assatis ; sporis globosis echinulatis. On the 

 bare soil, Leigh Woods, Bristol, Aug. 2, 1848. 



Patches suborbicular or confluent, Thelephoroid, yellow with a 

 pale margin. Hyphasma consisting of closely packed decumbent 

 articulate threads, the ends of which rise np and are branched 

 dichotoniously, their apices swelling slightly and clothed with 

 globose echinulate shortly pedicellate spores. 



This beautiful fungus raises the genus Rhinotrichum almost to 

 an equality with Aspergillus, some of whose species it closely re- 

 sembles, diSering in fact principally in the spores being single 

 and not arranged in moniliform threads. 



Plate VI. fig. 12. a. Fertile flocci from a sketch by Mr. Thwaites; 

 b. tip of thread with spores highly magnified. 



543. Sporodum Conopleoides, Covd. = Deinatium hispididum, Fr. 

 Ann. ^,- Mag. N. Hist. Ser. 2. Vol. ni. 12 



