﻿

  156 
  TABULAR 
  ARRANGEMENT 
  

  

  Order 
  XXVIII.— 
  SPH^EEIACEI. 
  

  

  Perithecia 
  opening 
  by 
  a 
  distinct 
  ostioium 
  or 
  orifice. 
  

  

  Genera. 
  

   Section 
  I. 
  — 
  Xylarici. 
  

  

  302. 
  Stipitate. 
  Stroma 
  corky, 
  rarely 
  fleshy. 
  Perithecia 
  

  

  immersed. 
  Sporidia 
  uniseriate, 
  simple, 
  ovate, 
  

   dark-coloured. 
  Xyi.aria, 
  Fr. 
  

  

  303. 
  Stem 
  shrubby 
  or 
  simple. 
  Perithecia 
  of 
  the 
  same 
  

  

  substance 
  as 
  the 
  stem. 
  

  

  TlIAMNOMYCES, 
  Ehr. 
  

  

  304. 
  Stipitate. 
  Stroma 
  between 
  fleshy 
  and 
  corky. 
  

  

  Fructifying 
  surface 
  discoid. 
  Perithecia 
  im- 
  

   mersed. 
  Sporidia 
  ovate, 
  simple, 
  coloured. 
  

  

  Poronia, 
  Fr. 
  

  

  305. 
  Convex 
  or 
  plane. 
  Stroma 
  corky 
  or 
  brittle. 
  

  

  Perithecia 
  immersed. 
  Sporidia 
  ovate 
  or 
  lan- 
  

   ceolate, 
  curved 
  unsymmetrical, 
  simple, 
  dark- 
  

   coloured. 
  Hypoxylon, 
  Bull. 
  

  

  300. 
  Stroma 
  expanded, 
  pulverulent, 
  becoming 
  indu- 
  

   rated 
  and 
  carbonized. 
  Perithecia 
  immersed. 
  

   Sporidia 
  uniseriate, 
  lanceolate, 
  curved, 
  simple, 
  

   d'ark-coloured. 
  Ustulina, 
  Tul. 
  

  

  307 
  Stroma 
  discoid. 
  Perithecia 
  immersed, 
  in 
  sepa- 
  

   rate 
  cells. 
  Sporidia 
  ovate 
  or 
  ovato-globose, 
  

   straight, 
  simple, 
  dark-coloured, 
  excluded 
  in 
  

   tendrils. 
  NUMMULABTA, 
  Tul. 
  

  

  