ON CHiETOPHOMA. 
25 
scarcely find a place in it. Apospliceria is a genus which was con- 
stituted to receive such species of carbonaceous Phoma as in time 
became superficial by the falling away of the cuticle ; hence these 
species have less reason for being associated with Phoma, because 
they are always superficial, and have as distinct a byssoid stroma 
as the majority of species of Asteroma. 
Temporarily, therefore, and for the purposes of identification, we 
propose the association of these simple forms under the name of 
Chcetophoma , so that each may have a name by which it may be 
spoken or written about, and consequently aid in referring them to 
their proper position, whenever that may be discovered. 
Chaetophoma. Gen. nov. 
Perithecia membranacea, minutissima, superficialis, intra hyphis 
intricatis plerumque nidulans, spermatiis minimis, continuis, 
hyalinis saepe ovalibus vel ellipsoideis. Principally foliicolous. 
The enumeration of some of the forms which we would propose 
for insertion under this name will serve to illustrate better than a 
mere technical description, which is necessarily somewhat lax, the 
features which a number of these minute forms have in common. 
A. Perithecia subglobose. 
Chaetophoma ilicifolia. Cke. 
Hypophylla, fuliginea, maculaeforma. Hyphis byssinis ramu- 
losis, intricatis, brunneis, ramulis adscendentibus, cladosporioideis. 
Peritheciis brunneis, globosis (-07 mm. diam,) sparsis. Sporis 
ellipticis, vel ovalibus, hyalinis (*004 x ‘0025 mm.). 
On leaves of Ilex opaca. S. Carolina. Eav. (No. 2567.) 
Forming smoky spots on the under surface of the leaves. The 
minute perithecia are seated amongst the threads of a species of 
Cladosporium. — PI. 118, fig. 3. 
Chaetophoma quercifolia. Cke. 
Hypophylla, effusa, fuliginla. Hyphis byssoideis repentibus, 
flexuosis, furcatis, intricatis, brunneis. Peritheciis globosis, fuscis, 
(•03--04 mm. diam.), gregariis vel sparsis. Sporis minimis, ovatis, 
hyalinis. 
On leaves of Quercus nigra. U. States. S. Carolina. Eav. 
The perithecia are smaller and more gregarious than in C. ilici- 
folia, and no conidia have yet been detected on the byssoid threads, 
which are densely interwoven. — Plate 118, fig. 1. 
Chaetophoma Catesheyi. Cke. 
( Phoma Catesbeyi Thum. Flora, 1878, p. 179.) 
Hypophylla, fusca. Hyphis byssoideis, ramosis, intricatis, brun- 
neis, repentibus. Peritheciis gregariis, foliorum paginam inferi- 
orem toto occupans, subglobosis, fuscis (*025-*03 mm.) Sporis 
sub-ovato globosis, hyalinis (-0015 mm.) 
On leaves of Quercus Catesbeyi. S. Carolina. Eav. (2202).— 
Piate 118, fig. 2. 
