Feb., 1922] LA RUE AND BARTLETT PESTALOZZIA GUEPINI 
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and basal cells hyaline, and the three interior cells dark; appendages longer 
than the spores and typically three in number. 
More recently, diseases of several tropical cultivated plants, including 
the tea blight and a stem disease of rubber seedlings, have been attributed to 
Pestalozzia palmarum Cooke. This name was originally based by Cooke in 
1876 (5) upon a fungus from the dead sprout of a cocoanut from Bengal. 
The spores were stated to be 0.015 mm. long. Later, in 1877, the same 
author (6) supplemented the description from material found on the dead 
stems of Cocos nucifera from Demerara, giving the length of the colored 
portion of the spores {i.e., the three inner cells) as 0.045 mm. Cooke was so 
notoriously careless that it is useless to try to explain the discrepancy in 
the measurements, or to speculate as to whether or not the material from 
the two sources was the same. Discarding the measurements as hopelessly 
irreconcilable, the description affords no distinction from Pestalozzia Guepini 
Desm., except t*he different host. 
In 1872, before Cooke had named Pestalozzia palmarum at all, he had 
described the causal fungus of the gray blight of tea as Hendersonia theaecola 
(7). There is no doubt that this was merely Pestalozzia without the ter- 
minal and basal hyaline cells, which fall off in old, weathered specimens. 
Cooke himself suggested that such was the case, comparing his so-called 
Hendersonia, in the original description, with Pestalozzia Guepini. Recently 
the tea blight has been christened again by Sawada (8) as Pestalozzia Theae. 
Sawada is hardly to be blamed for neglecting Cooke's defective description 
and incorrectly formed name, but unfortunately he fails to make out a 
clear case for the distinctness of the tea fungus. His description (as trans- 
lated by Tanaka, in Mycologia) gives the length of the spores as 16 to 21 ju, 
but in a letter dated June 26, 1919, he gives 23 to 31 fx; the latter measure- 
ment is doubtless the correct one. Sawada 's idea of Pestalozzia Guepini 
is that of a form differing from the tea-blight fungus in having shorter and 
generally three-septate rather than four-septate spores. Desmazieres' 
description, however, makes it very clear that in the original material of 
P. Guepini the spores were typically four-septate, and therefore five- 
celled, the three central cells being dark in color. Moreover, his measure- 
ment of the length, about one fiftieth millimeter, although vague, appears 
to be quite as dependable as the measurements of later authors, and would 
not exclude from P. Guepini any of the tropical Pestalozzias which have 
been isolated from tea, cocoanut, rubber, etc. Sawada states that in P. 
Theae the appendages are club-shaped, whereas in P. palmarum, which he 
records as found upon tea in Formosa, they are filiform. This character is 
one upon which it seems unwise to place reliance, since any strain may 
show both conditions, depending upon circumstances. In the last analysis 
it is the only character used by Sawada for the differentiation of two sup- 
posedly distinct fungi found upon the same host in the same locality, and 
we are unable to grant its validity. The literature shows, as far as tropical 
