232 HARPER: SPRING ASPECTS OF COASTAL PLAIN VEGETATION 
peat problems have shown that the amount of seasonal fluctuation 
of water is of fundamental importance to aquatic vegetation, thus 
explaining several peculiarities of distribution which could not be 
satisfactorily explained in any other way. 
The following notes will throw some light on the inland, coast- 
ward, northern or southern limits of certain species observed in the 
ten hours it took to go from Blythewood to Jacksonville. 
Nyssa OGECHE Marsh. Occasional from the Altamaha River 
to the St. Mary’s, including the swamps of both rivers. This 
species has long been credited to South Carolina, perhaps because 
it was once described by Walter (as N. capitata). But Walter’s 
Flora Caroliniana contains the names of a considerable number of 
plants that probably do not grow within many miles of his home 
(which was near the center of the coastal plain of South Carolina), 
and a few that have not even been seen in South Carolina at all, 
in modern times at least; and it is reasonable to assume that he 
had some specimens from the two adjoining states in addition to 
those from his own.* 
The Michauxs, father and son, and Elliott, all placed the 
northeastern limit of Nyssa Ogeche at or near the Ogeechee River 
in Georgia; and I do not remember seeing it even as far northeast 
as that, although I have crossed that river on every railroad bridge 
and a few wagon bridges, making over a dozen different places in 
all. Herbarium specimens distributed by the late Dr. J. H. 
Mellichamp of Bluffton, S. C., would appear to be from a tree 
transplanted from the Ogeechee River swamps, judging from a 
brief note in Garden and Forest.(7: 500) for Dec. 12, 1894. 
* Among the species mentioned by Walter, which do not seem to have been seen 
in his neighborhood recently, if at all, the following occur to me: 
Zizia cordata, Ilex myrtifolia, Robinia hispida, Baptisia villosa (see Coker, Torreya 
II: 10), Crataegus aestivalis, Malapoenna geniculata, Benzoin melissaefolium, Mag- 
aragraph are the modern ones, which are different in most cases from those used 
by Walter. The specific names are the same as his in all but two or three cases, 
however.) 
