130 
IIYPOXYLON AND ITS ALLIE8. 
41. Hypoxylon nodulorum, Lev. in Herb. Kew. 
Globosum, superficiale, nigrum, opacum (1-2 cm.), rugosum, 
intus pallidum, duriusculum. Peritheciis globosis, mediis, peri- 
phericis. atris ; ostiolo minuto papillatis. Ascis cylindraceis. 
Sporidiis -02--022 X ‘005 mm. 
On wood. Marquesas (1854). 
63. Hypoxylon pruinatum, Klotsck . Rosellinia pruinata , Sacc. Syl., 
No. 942. 
Sporidia ‘02--022 x *008-*009 mm. 
An undoubted Hypoxylon , in which relationship it was placed by 
Klotsch. 
65. Hypoxylon eterio, B. Sf Br. Antho stoma eterio, Sacc. Syll-, No. 1133. 
It is difficult to comprehend why this species has been removed 
to Anthostoma. H. pruinatum, Kl., H. discolor , B. & Br., and 
H. eterio, B. & Br., are closely allied. 
67. Hypoxylon Holwayi, Ellis, in Amer. Nat., xvii., p. 193. 
Stromate orbiculari (2-|-5 mm. diam.) tenui, primum pruinoso, 
intus nigro, ostiolis atris, prominulis, acute papillosis. Peritheciis 
(20-30) uniseriatis. Ascis cylindricis. Sporidiis uniserialibus 
oblongis, fuscis, 1-2 nucleatis (-022-'027 X ‘011 mm.). 
On Populus. Iowa (U.S.A.) 
The stroma is surrounded by a fringe of conidiiferous processes. 
71. Hypoxylon exiguum, Cooke. 
Pulvinatum, convexo-applanatum, atrum, ovale vel discoideum 
(2-3 mm. lat.) hinc illic confluens. Peritheciis minutis, nume- 
rosis, papillatis. Ascis cylindraceis. Sporidiis minutissimis, 
ellipticis, fuscis (*0035 X '002 mm.). 
On rotten wood. Mauritius. Alabama, Carolina, U.S.A. 
A most distinct species, easily recognized by the exceedingly 
minute sporidia, which are a little larger in American specimens. 
74. Hypoxylon Pouceanum, Berk. & Cke. 
Pulvinatum, atrum, nitidum, superficiale. Peritheciis paucis, 
subglobosis, ostiolis in disco plano, annulato marginato papillatis, 
ut in H. annulato. Ascis cylindraceis. Sporidiis sublanceolatis, 
rectis vel curvulis, fuscis (’015 x *004 mm.). 
On bark. Mauritius (Dr. Ayres). 
Externally this has the appearance of H. annulatum, and we 
hesitated to describe it separately, on account of the difference in 
the fruit. It may be only a variety of H. annulatum, to which it 
is closely allied. 
82. Hypoxylon zimazum, Berk, Cke. 
Pulvinulis atris, nitidis, elongatis, rimis epidermidis corticis 
erumpentibus. Peritheciis magnis, prominulis, papillatis, in 
crustam nigram confluentibus. Ascis cylindricis. Sporidiis ellip- 
ticis, obtusis, fuscis. (‘OOG-’OO? X *0025 mm.). 
On bark of branches. Mauritius (Sept., 1858.) 
With somewhat of the habit of H. sassafras — the elongated 
pustules mostly parallel, following the fissures of the epidermis, 
soon quite superficial. 1 cm. long; 1-2 mm. broad. 
