926 



SPHiERIACEI. 



2787. Ceratostoma Zobelii. Berk. " Truffle Ceratostoma." 



Perithecia very minute, punctiform, globose ; asci broad, ses- 

 sile ; sporidia ovate-lanceolate or elliptic, unequal-sided, simple, 

 brown, opaque. — Berk.Outl. p. 402. Microthecium Zohelii, Corda. 

 Ic.Y.f. 53. Bot. Zeit. 1861. Fckl exs. no. 809. Ceratostoma hrevi- 

 rostre, Fckl. Sph. Zobelii. Tul. Fung. Hyp. p. 186. Melanospora 

 Zobelii, Fckl. Sym. Myc. p. 127. 



On truffles. 



Gen. 361. ORBICULA, Cooke. 



Perithecia between membranaceous 

 and carbonaceous, reticulated, seated 

 on a distinct mycelium ; ostiolum ob- 

 solete ; asci cylindrical; sporidia sub- 

 globose, hyaline or coloured ; para- 

 physes simple or branched. 



(Fig.A^l.) 



2788. Orbicula cyclospoia. 



Coolie. " Paper Orbicula." 



Mycelium radiating, branched, co- 

 lourless ; perithecia globose, dark- 

 brown, reticulated ; asci cylindrical ; 

 paraphyses branched ; sporidia globose, hyaline. — Sphceria cy- 

 clospora, Coike in Pop. Sci. Bev. Jan. 1S71, t. Sb,f. 10, 11. 



On varnished wall j^aper. 



This species was accompanied by Rhinotricloim lanomm^ PenicilUum char- 

 to/rum, and Sjjoridesmiurii alter /laria, all of which may be connected therewith 

 as conidia and stylospores. (See Popular Science Eeview quoted above.) 

 There appears to be no decided mouth to the perithecia, so that it is not a 

 true S^jhmia, {Fig. 401.) 



Fig. 401. 



2789. 



Orbicula taxtaricola. Coolie. " Lichen Orbicula." 



Mycelium superficial,dark-brown, radiating, very much branched 

 andarticulated, the joints oblong and nucleate ; perithecia oblong- 

 conical, black, growing in the interstices of the matrix ; asci 

 linear ; sporidia simple, spherical or oblong, at first colourless, 

 at length brown, and minutely nucleate. — Sphceria tartaricola, 

 Leight. Ann. N.H.xix. p. 408. Linn. T?'ans. xxvii. p. Ibdjt. 35, 

 lowerjigs. 



On thallus of Lecanora tartarea. Near Dolgelly. 



