186 Transactions British Mycological Society. 
without comprehensive and comparative study. It still remains 
to be seen whether such radical re-adjustment as von Hoehnel 
proposed best fits a logical arrangement of the Ascomycetes ; 
the intermediate position of the Hysteriales makes their study 
of high importance. 
The scattered references to the parasitism of members of the 
Hysteriales have not been included in this paper, but it should 
Table I. Distribution of species according to Saccardo. 
35 
54 
N.A. Bute | INGA. &)| SrA. Asia |Austral.| Africa F q 
only only Eur. | only only | & N.Z.| only Miscellaneous 
Dichaena 4 I 2 — = —- — — 
Farlowiella — I I — — —s = 
Gloniella 5 21 — I2 6 2 —- 1 doubtful 
Hysterium 37 2 2 II 8 = I 1 Eur., Asia and N.A. 
1 Eur., S.A. and N.A. 
Gloniopsis 5 19 z B 2 a= 2 doubtful 
Hysterographium| 18 II 5 10 3 — 4 1 N.A., Eur. and Austral. 
1 N.A., Eur., Afr. 
1 N.A. and Asia 
Glonium 14 18 — pae) — 2 — i N.A. and S.A. 
3 Eur. and S.A. 
Bullardiella a I —_ — — — _— — 
Mytilidion 3 12 =e I = me — — 
Ostreion I — —_ —- ~ —- — — 
Lophium 4 5 I I — —— —_ —_— 
Total 93 113 12 48 18 6 sy be 
be noted that Tubeuf(77) succeeded in growing Lophodermium 
pinastri in pure culture. Brefeld had previously failed to culture 
a species of Lophodermium. Tubeuf did not succeed in pro- 
ducing infection on pines by artificial inoculations from his 
culture. 
SUMMARY. 
The members of the Hysteriales were at first confused with 
lichens, certain of which they resemble. Early workers inevitably 
drew up vague descriptions of these fungi. The name of the 
group is based on the genus Hysterium, which was first used 
by Tode. The type species is H. pulicare, the name of which 
can be traced back to Lightfoot. Persoon succeeded in bringing 
a number of similar forms together, largely by an inclusive 
interpretation of the genus Hysterium. Chevallier first used the 
name “‘Hysterineae” for an order, and he also separated into 
another order certain genera now included in the Phacidiales. 
This work has been generally overlooked in considering the 
beginning of a separate grouping of these fungi. Corda used the 
family name Hysteriaceae to include also the Phacidiales; most 
