ON — 
53 
On dead peduncles of various Compositae, especially of Leon- 
todon and Hypochoeris. Stated to be the pyenidium of Pleospora 
albicans, but this is unlikely, since it is a distinct Phomopsis; 
the pycnidia are crowded without order on, bleached spots. 
3. ar iio: ambigua, 7’rav. Flor. Ital. Crypt. 1906, Fung. 
11. 266. Phoma ambigua, Sacc. in Mich. i. 520. 
Spores fusoid, often more pointed at one Sand: 8-10 x 2°5-3 p; 
sporophores filiform or subulate, 12-20 x 1-1: 5 op (Fig. 3. 
On twigs of Pyrus communis ; Domebty also on p Malus. The 
pycnidium of Diaporthe ambigua, Nits 
oa Amelanchieris, Grove. Phoma Amelanchieris, Cooke in 
Grevill. xiii. 
Spores subfusoid, obtuse at apex, 8- / x 2-2-5 u; sporophores 
subulate, curved, 15-20 plong. (Fig. 4.) 
On branches of Ainslaabeca 
5. P. Arctii, Trav. l.c. p. 226. Phoma Arctit, Sacc. A Mich. 
ii. 340. Grove, in Journ. Bot. 1916, liv. 187, pl. 542, 
Spores ellipsoid-lanceolate, rather acute at the eae 7-9 x 
2-5-3 yw; sporophores. crowded, more or less faible 20-25 x 
15 p 1 
On ‘dead Sines of Arctium Lappa. Almost certainly the pyc- 
nidium of Diaporthe Arctit, Nits., with which it is constantly 
associated. The pycnidial wall is often very imperfect or even 
non-existent in the upper part. For a long time I could find no 
B-spores, such as Sydow found, but after examining scores of 
pycnidia I at length found some of the usual kind, 17-25 x 
0-75-1 uw. A very typical Phomopsis. 
P. Asteriscus, icin Phoma Asteriscus, Berk. in Ann. 
. 368 
foes Oe 
Nat. Hist. 1850, v 
Spores Sblongatli paald, scarcely acute at the upper end, 7-8 x 
(ig. 5 3 sporophores cylindrical, often arcuate, 12-20 x 1-1°25 yu. 
6. 
Or d stems of Heracleum Sphondylium. Even in his 
original description (l.c.) Berkeley perceived the characters which 
mark this species as distinct from the ordinary Phoma, ig an 
investigation of the original specimens (Guernsey, Rev. al- 
wey) and many others shows that it is distinctly a Pets 
someshhy the pycnidium of Diaporthe Berkeleyi, Nits. 
7. P. Aucubae, 7'rav. l.c. p. 243. Phoma Aucubae, Westd. 
Ea no. 1373. Phoma insularis, C. & M. in Grevill. xvi. 6 (non 
peg. 
Spore ellipsoid or somewhat fusoid, often acute at the ends, 
6-9 x_2-2°5 1; sporophores cylindrical, 10- 
_ On dead twigs and leaves of tet es ee Uae The form on the 
twigs (£. ramulicola Sacc. = £. ramicola Oud.) is undoubtedly a 
true Phomopsis, the Una oi of Diaporth Aucubae, Sacc.; 
d so far as can be seen from several specimens of Westendorp 
{no 1373) examined, ea "the leaves, “they are identical with those 
n the twigs in | every respect. Cooke and Massee’ s specimens of 
