66 ¢ 
On dead scapes of Plantago lanceolata. The pycnidium of 
Diaporthe adunca, Niessl. There is at first no true pycnidium, 
merely the discoloured epidermis, but later there arises round 
the pore a thick smoky-brown sclerotial tissue, which at length 
falls out in the way movpuny described. On the Continent 
this species is recorded also on ?. major and ?. media. Accord- 
ing to Diedicke it is a parasite, appearing as early as July, and 
often causing a sharp bend of the upper part of the attacked 
scapes, by which they are easily recognisable. These statements 
are not known to be true of the British specimens. The inclining 
of the spike is owing to the fact that the attack begins at tue 
upper part of the green peduncle, which then leans over through 
the weakening of the support; afterwards the attack proceeds 
downwards. A true Phoma can, at times, also be found on the 
same peduncles. 
68. Phomopsis tamicola, 77rav.l.c. p.233. Phoma tamicola, 
Cocke in Grevill. xiii. 95. Phlyctaena vagabunda, Desm. in 
Ann. Sci. Nat. 1847, viii. 16, var. Tami. 
Spores fusoid, rather obtuse at the ends, 8-9 x 2-25-3 yp; 
sporophores linear-subulate, crowded, 15 x 1-1-5 y»; B-spores 
20-25 x : 
On dry stems of Tamus communis. The pycnidium of 
Diaporthe scandens, Sacc. et Speg. There cannot be the slightest 
doubt that the Phlyctaena on T'amus is merely the earlier state 
of the Phomopsis, before the pycnidial wall is fully developed 
and when the filiform spores alone are being produced. Attempts, 
however, to find both forms of spore in the same pycnidium were 
unsuccessful. 
The non-British Phlyctaena vagabunda, var. Phytolaccae is 
similarly the early state of Phomopsis Phytolaccae, Grove 
(Phoma Phytolaccae, B. et C.), which is a true Phomopsis. This 
early state is found in close company with thé mature state, and 
is what is called by Saccardo (Syl. iui. 594) Phlyctaena sep- 
torioides, Sace. 
69. P. velata, v. Hohn, lic. p. 33. Phoma velata, Sacec. in 
Mich. ii. 96. ‘i 
f. minor, Sace. Syll. iii. 92 = P. communis, Rob. in Herb. 
Desm. ser. 1i. no, ‘ 
Spores oblong-fusoid, blunt at the ends 7-8 x 2-2°5 m; sporo- 
phores cylindrical, up to 14 x 15 y. (Fig. 30. 
On bark of Tila spp. The pyenidium of Diaporthe velata, 
Nits. The typical form has longer spores (10-12 ») and sporo- 
phores (20 »). Phoma communis, Rob. seems to be a still 
smaller form on the twigs and petioles. 
In the British specimens there were found, in similar (but 
not, so far as was seen, the same) pycnidia, large numbers of 
B-spores, filiform, flexuose or hooked, 16-20 x 1 p, borne on 
short papilliform cells such as Diedicke describes and figures for 
Phomopsis oblita, Sacc. (Annal. Mycol. 1911 ix. 26,-pl. 3, f. 4). 
In Desmaz. 693 the B-spores were found in abundance; in typical 
P. velata, Diedicke found only the A-spores. : 
