18 
surface of the leaves. These later coalesce and form extensive 
rown ereas. On the under side the minute sori are visible as 
black shining areas, just visible to the naked eye though they 
may ultimately reach 2 mm. in diameter. Occasionally they 
appear also on the upper surface. In bad cases the whole 
foliage including the petiole is attacked and killed, and as it 
becomes browned and scorched in appearance diseased plants 
stand out clearly in the field. 
‘Although neither the ascigerous nor conidial stages of 
. Pastinacae have been previously recorded for this country 
there can be little doubt that the fungus occurs frequently, 
but has been overlooked. Further it is probable, since their 
morphological characters are identical, that P. Pastinacae is 
synonymous with P. Heraclei which is not uncommon in 
England on Cow Parsnip (Heraclewm Sphondylium). The 
ow 
widespread and injurious Celery Blight (Septoria Apii) origin- 
ally spread to Celery from the wild Apiwm (vide Pethybridge, 
Journ. Roy. Hort. Soc. vol. xl., pp. 476-480). The spore 
measurements of the conidial stage given in Saccardo are 
incorrect, and a revised description is given below.* 
P. Pastinacae, Rostr.—Cylindrosporium Pastinacae, Lind. 
Danish Fungi, p. 493. Septoria Pastinacae, Westend, Herb. 
Crypt. Belg. no. 639. 
Sori on the under side of the leaf, scattered or gregarious, 
not on distinct spots, immersed in the tissue of the leaf. 
Pyenidial wall lacking, spores set free through the ruptured 
epidermis. Conidia hyaline, strongly curved, falcate, ends 
rounded, at first with a few oil-drops, finally 1-septate, rarely 
with a second septum, 50-70 x 4-5 pn. 
Ramularia Pastinacae, Bubdék. 
In crowded gardens and allotments the spotting was severe 
and sufficient seriously to weaken the plants; in the open fields 
the damage was insignificant. The synonomy and description 
are as follows :— 
* For assistance with regard to the identification, synonomy and descrip- 
tion of these new records and al at . 
D so for the text figures, I am much indebted 
to Miss E. M. Wakefield of the Kew Gabesuer’ sce 
