ALGOLOGICAL NOTES 
I. CHLOROCHYTRIUM GLOEOPHILUM BOHLIN 
GEORGE T. MOORE 
Director of the Missouri Botanical Garden 
Engelmann Professor in the Henry Shaw School of Botany of 
ashington University 
In August, 1909, there was collected at Gosnold Pond, 
Cuttyhunk, Mass., Rivularia Bornetiana Setch., which grows 
abundantly there on Chara and attached to stems of sedges. 
Upon examination the gelatinous matrix of the Rivularia 
was found to be more or less filled with a unicellular grass- 
green alga, which apparently failed to fit the published 
descriptions of any known genus, and living material was 
obtained in the hope that the life history of this plant might 
be determined. For the past seven years material has been 
collected at various times during June, July, and August, 
and impure cultures maintained through the greater part of 
this time. It is believed, therefore, that the information de- 
rived from this rather prolonged study comprises as com- 
plete a knowledge as may be expected of the alga growing 
under the conditions stated. As will be seen, the affinities of 
the plant would lead one to expect some kind of a motile spore 
or gamete, and one reason for continuing the investigation 
over so many years was the belief that such a spore existed. 
None has been found, however, and while ciliated spores may 
be discovered later, it hardly seems probable. 
It early became evident that the published description most 
nearly corresponding with the form found in Gosnold Pond 
was Chlorochytrium gloeophilum growing in colonies of 
Rivularia, described by Bohlin! from preserved material from 
Paraguay. Ап exact copy of all the information furnished 
concerning this plant follows: 
“1. Chlorochytrium gloeophilum n. sp. Tab. 1, Fig. 53, 54. 
Chl. cellulis ovato-oblongis, membrana hyalina, in uno vel 
utroque polo incrassata. In coloniis Rivulariarum nidulans. 
t Bohlin, К. Die Algen der ersten Regnell'sehen Expedition. І. Protoc 
coideen. К. Svenska Vet. -Akad., Bihang till Handl. III. 237: 28. pl. 1. f. 53. 1897. 
ANN. Mo. Bor. GARD., Vou. 4, 1917 (271) 
