LAGKKHEIMA — PATELLEA. 97 



Lagerheima sphaerospora, Sacc, SylL, x. ri. 4671. 

 (figs. 51-54, p. 91.) 



Scattered or crowded, - applanate, indistinctly marginate, 

 thin, circular or slightly elongated, 1-2 mm. across ; ex- 

 cipulum consisting of interwoven hyphae of a dingy olivo 

 colour ; asci cylindrical, apex rounded, base narrowed, 8- 

 spored; spores uniseriate, typically broadly elliptical, ends 

 obtuse, smooth, continuous, clear brown, sometimes 1-guttu- 

 late, 9-12 X 7-8 /j.; paraphyses numerous, filiform. 



Patellaria sphaerospora, B. & C, in Cooke's Disc. U. States, 

 p. 26 (name only) ; Phil., Grev., xviii. p. 85. 



On decaying wood. 



Type specimen examined. 



In many asci the spores are all alike in form, as described 

 above ; in others, again, some of the spores are normal, others 

 globose, angularly globose or piriform. 



PATELLEA. Fries, (figs. 38, 39, p. 91.) 



Ascophore erumpent, soon quite superficial, sessile, circular y 

 patellate, coriaceous, contracting more or less when dry, 

 blackish ; asci cylindric-clavate, 8-spored ; spores elliptic- 

 oblong, hyaline, 1-septate ; paraphyses present. 



Patellea, Fries, Syst. Myc, ii. p. 149, emended by Saccardo 

 in Consp. Gen. Disc, p. 67 ; Sacc, SylL, viii. p. 783. 



Patellaria, of authors. 



Distinguished by the 1-septate, hyaline spores. 



Patellea pallida. Mass. (figs. 38-39, p. 91.) 

 Gregarious, sessile, pallid, discoid, plane, more or less 

 contracted and concave when dry, J— § mm. across ; excipulum 

 parenchymatous, cells 8-11 /x diameter, running out into 

 parallel septate hyphae at the margin, these become thinner 

 inwards and gradually pass into typical paraphyses ; brown, 

 septate hyphae spring from the basal cells of the excipulum, 

 and attach the fungus to its matrix ; asci clavate, apex 

 narrowed, 8-spored ; spores narrowly cylindrical, ends rather 

 narrowed, often slightly curved, hyaline, for a long time 

 continuous, then 1-septate, 12-14 x 2-3 /x ; paraphyses 

 cylindrical, about 2 /x thick, hyaline. 



VOL. IV. u 



