SCHWEIXITZIA. 135 



the excipuluni nmning out into densely packed, septate hairs, 

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

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

 coloured ; paraphyses slender, thickened upwards. 



Distinguished hy the large coloured cells terminating the 

 external hairs of the excipulum, and the l-aeriate, con- 

 tinuous coloured spores. 



Schweinitzia phaeospora. Mass. 



Scattered, erumpent, then supei-ficial, 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, 6-8 /x thick at the apex, 

 externally scurfy, due to the presence of numerous large, 

 subglobose, brown cells, up to 30 /a. 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 eUiptical, 

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

 paraphyses numerous, linear, apex broadly clavate and 

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

 the epithecium. 



Genangium phaeospcn-um, Cke., Grev., xii. p. 44; Phil., 

 Brit. Disc, p. 346 ; Sacc, S jll., viii. n. 2354. 



On sycamore bark. 



Type specimen examined. 



Schweinitzia mfo-olivacea. Mass. 

 Ascophore sessile, hemispherical then almost or quite 

 plane, discoid, 1|— 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 fi; 



