146 
recognised, the proofs of its occurrenee are easily observed, and 
many superfluous synonyms might be thereby avoided. 
CO 
F899 Ae, 
Fie. 5.—a, ‘‘ Sphaeropsis Gladicli, Cooke,” spores 2 Ravenel, 
no. 2956; 6, ‘‘ Sphaeropsis epitricha, B. & Br.,’’ spores from Broome’s 
specimen. 
1005. Phoma colixichin, Sacc. 
Rpliaripes epitricha, B. & Br. in Ann. Nat. Hist. 1850, 
v. 375 
AscocuyTa EQvuIsETI, Grito, - in Journ, Bot. 1918, p. 315 
(var.). 
Phoma Equiseti, ong Exs. no. 183. Sacc. Syll. iii. 168; 
. 187. Allesch. vi 
Sphaeria Equiseti, — Syll. ii 
 Diplodina Equiseti, Sace. in " Mihod Mycol. 1905, p. 233; 
Syll. xviii. 355. 
: oe Lquiseti, Fautr. in Rev. Mycol. 1890, p. 124; 
Sace. Syll. x. 337 
_The specimens to which Berkeley gave the name Sphaeropsis 
Wiltshire, by Broome. Berkeley’s description of the ‘ subicu- 
lum” is a little misleading. The pycnidia are surrounded by 
numerous creeping branched, somewhat torulose, brown hyphae, 
about 4 broad. It is this which causes the ‘“‘ cinereous spot.” 
The pycnidia are about 160 » wide, thick-walled, of a dark-brown 
texture, prominent and at length piercing the epidermis by @ 
rather wide pore. Some of the numerous spores look at first 
_ sight like what Berkeley described, but, on adding dilute potash 
(which presumably restores them to their pristine shape and 
size), they assume the appearance of Ascochyta or Diplodina 
spores, 10-16 x 3-5-4-54y, oblong, obtuse at the ends, often 
slightly bent, with a few guttules and often a Rg septum, quite 
colourless, cells occasionally unequal. (Fig. 50.) 
There cannot be the slightest doubt that this species is in 
the state which is usually called Dipiodina, taking that genus to 
differ from Ascochyta in the nature of its pycnidial wali (thick 
and dark, not thin and pale). At the same time it seems pro- 
bable that it is only a more fully developed state of Ascochyta 
Hquiseti, mihi. And as I have proved that that is an advanced 
state of what has long been called Phoma Equiseti, the three are 
probably synonymous. The spores of the ‘“‘ Phoma”’ can be 
traced in the same pycnidium from ovoid, eseptate, 6-7-5 x 3p, 
up to oblong, l-septate, 10-5-12 x 3-3-5; those of Diplodina 
Equiseti, Sacc., are given as cylindrical, 16-19 x 4-4-5y, at 
