SCHWEINITZIA. 135 



the excipulum running out into densely packed, septate hairs, 

 many of which end in a large coloured cell ; asci cylindrical, 

 8-spored ; spores 1-seriate, smooth, continuous, elliptical, 

 coloured ; paraphyses slender, thickened upwards. 



Distinguished by the large coloured cells terminating the 

 external hairs of the excipuluin, and the 1-seriate, con- 

 tinuous coloured spores. 



Schweinitzia phaeospora. Mass. 



Scattered, erumpent, then superficial, sub-sessile, margin 

 at first incurved, then expanding and becoming almost plane 

 when moist, up to 1 mm. across, every part pale brown ; 

 rather fleshy, excipulum parenchymatous, cells small, and 

 running out at the margin into densely crowded, parallel, 

 clavate, septate, brown hairs, 68 ft thick at the apex, 

 externally scurfy, due to the presence of numerous large, 

 subglobose, brown cells, up to 30 yu. diameter, that spring 

 from, the external cells of the excipulum ; asci narrowly 

 clavate, apex rounded; base narrowed into a pedicel, 8- 

 spored; spores obliquely uniseriate, broadly elliptical, 

 smooth, continuous, clear brown at maturity, 10-12 X 8-9/x,; 

 paraphyses numerous, linear, apex broadly clavato and 

 brown, 6-8 /x, passing by degrees into the marginal cells of 

 the epithecium. 



Cenangium phaeosponim, Cke., Grev., xii. p. 44 ; Phil., 

 Brit. Disc., p. 346 ; Sacc., Syll., viii. n. 2354. 



On sycamore bark. 



Type specimen examined. 



Schweinitzia rufo-olivacea. Mass. 

 Ascophore sessile, hemispherical then almost or quite 

 plane, discoid, l|-2 mm. across, fleshy, firm ; externally 

 dingy red, minutely downy and pulverulent, due to the 

 presence of numerous hairs of 3-5 cells each, mixed with 

 large, olive, vesicular, terminal cells springing from the 

 cells of the excipulum ; these vesicular olive cells also occur 

 in the substance of the hypothecium ; disc plane at maturity, 

 dark olive-green, becoming blackish with age; asci sub- 

 cylindrical, 8-spored; spores obliquely uniseriate, broadly 

 elliptical, ends obtuse, pale olive-brown when mature, 

 smooth, continuous, often 2-guttulate, 10-15 x 7-8 p.; 



