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only one or two specimens, but the colony I have found is well 

 established. The ancient cemetery on Girod Street is also the 

 home of this species. Ferns of several sorts are so common there 

 that I had visited the place several times before I detected 

 serrulata, although it grows in great profusion on the north wall 

 exposed to the full rays of the sun for the greater part of each day. 

 Pteris longifolia is found most plentifully on the north face of the 

 south wall wnere it gets the sun for only a few hours in the 

 morning, and P. serrulata occupies similar positions facing it. 

 The fertile fronds are numerous and well developed, and the 

 species must be set down as naturalized at least. 



Additional Stations for Ceratopteris. — Since the publication 

 of my article in the January Fern Bulletin Prof. R. S. Cocks 

 has very kindly supplied me with further data regarding the 

 "floating fern." Specimens are said to have been collected by Dr. 

 J. M. Joor in 1892, near the spot where I found my specimens, 

 but the fact was never recorded, and the specimens are not now 

 in existence, apparently. Upon the death of Dr. Joor his herb- 

 arium went to the Missouri Botanical Garden, but the Ceratop- 

 teris is not there. If additional evidence that the plant is native to 

 Louisiana were needed to supplement these records Prof. Cocks 

 has abundantly supplied it by giving me several sheets of Ceratop- 

 teris, which he collected some years ago on the shores of Lake 

 Pontchartrain and near my station for it. These specimens, 

 which he had laid aside without identifying, were rooted in the 

 mud, and so there can be no doubt as to the place of the species in 

 the fern flora of the State. My own specimen is of more than 

 ordinary interest from the fact that the fronds bear a large 

 number of young plants just starting into growth. 



The Distribution of Marsilia Uncinata. — Fruiting speci- 

 mens of the Marsilia, common along the Mississippi in Louisiana, 

 have recently been seen and are unquestionably plants of Mar- 

 silia uncinata. The species is most abundant about New Orleans, 

 growing on the borders of pools and roadside ditches and Prof. 

 Cocks informs me that it is found along the river for two hundred 

 miles north of the city. It fruits in late May or June, and 

 illustrates the fact that the most luxuriant plants of any species 

 are usually least fruitful, by producing sporocarps only on the 

 stunted plants left on shore by the receding waters. 



