HYMENOSCYPHA. 119 
ARRANGEMENT OF THE SPECIES, 
A. Sporidia broadly elliptic or ovate. 
(a) On fruit oe a ee +» species 8-10 
(b) On twigs Si ve oe » Li 
B. Sporidia oblong or fusiform. 
(a) On fruit ii ee » 12-13 
(b) On branches, twigs, or leaves ts » 14-17 
0. Sporidia cylindrical oe oe age » 18 
D. Sporidia unknown ., es ‘ ae x 19 
Key To THE Spsctgs. 
Hymenium pallid yellowish-green .. ae «. luteo-virescens. 
Hymenium brown or Sess ox 
Hymenium yellow .. is the 2 
Margin subserrate  .. axe aes ee »»  bolaris. 
1.; Margin tomentose ., <é oe me +. amentacea. 
Margin even .. ae 2 as a ae : 
2. (ister white oe oe an ie .. Aspegrenit. 
Externally yellow... . a5 oe . 8 
Stem long, slender, flexuous 2 is »»  Bryophila. 
3. (Stem short, firm, thickish . re ..  serotina, 
Stem filiform .. ate ar of «eo tuba. 
4. ‘ee scabrous .. oe ss ai .. pseudo-tuberosa. 
Externally glabrous .. oe . 5 
Stem short, thick, flexuous, umber-brown 4 + caucus. 
Stem slender, at first subtomentose, pale brown .. echinophila. 
Stem long, slender, flexuous, pallid-brown .. subularis. 
Stem attenuated downwards, blackish-brown o. firma. 
A. SPORIDIA BROADLY ELLIPTIC OR OVATE. 
(a) On fruit.* 
8. Hymenoscypha pseudo-tuberosa. (Rehm.) 
Cup infundibuliform, when moist expanded, sub- 
patelliform ; externally, as well as the stem, brown or 
olivaceous brown, slightly scabrous; hymenium livid or 
livid-brown ; stem long, rather slender, subflexuous; asci 
cylindraceo-clavate; sporidia 8, elliptic, obtuse at the 
ends, 9—10 x 4—5u; paraphyses filiform. (Plate V. 
fig. 25.) 
Peziza pseudo-tuberosa—Rehm, “Asco.,” No. 106; 
Pat., p. 171, f. 878. Sclerotinia Batschiana—Zopf. and 
* The term “ fruit’’ is used here in a popular sense to include the parta 
closely associated with the fruit. 
