HARPER: COASTAL PLAIN OF THE CAROLINAS 373 
surprising, however, considering its distribution in the coastal plain 
of Georgia.* 
PoPULUS DELTOIDES Marsh., and HicorIA AQUATICA 
(Michx. f.) Britton 
These were noted only in the swamps of the Santee and Pee- 
dee rivers, like Afzbiscus militaris. The Populus, like Platanus, is 
not known in the Altamaha Grit region of Georgia at all, while the 
fficoria has a distribution much like that of Planera. 
MyrIcA CERIFERA L, 
This was seen in three counties in South Carolina, four in 
North Carolina, and three in Virginia, and about three times in 
each, on the average; while its near relative JZ. carolinensis Mill. 
was noted only once, in a bog near Wrightsville, New Hanover 
County, N.C. Mr. Kearney scarcely mentions JV. cerifera in his 
botanical survey of the Dismal Swamp region, but he appears to 
have partly confused the two species, as many others have done. 
Of the numerous references to MV. carolinensis in his report, those 
on pages 370-372, 377, 386, 390, 392, 540 and 545 are doubtless 
correct, while those on pages 382, 400, 404, 473 and 477 almost 
certainly pertain to JZ. cerifera. The two species look much alike, 
but when their habitats are considered there is little danger of con- 
fusing them. MM. carolinensis is distinctly a pioneer plant, grow- 
ing in rocky pastures and barrens in the glaciated region, on dunes 
on the Middle Atlantic coast, and in sandy bogs in the coastal 
plain and lower mountains southward; while JZ cerifera is much 
more of a climax plant, normally inhabiting hammocks, bluffs, 
etc., in the coastal plain from Maryland southward. The two 
species must have had a very different history. 1. carolinensis is 
probably losing ground nearly everywhere, like most pioneer 
plants,t while J/ cerifera, like several other species whose 
tanges extend into the tropics,} is doubtless tending to spread in 
the the pine-barrens, if not elsewhere. In Georgia MV. cerifera espe- 
“1905 ; Amn. N. Y. Acad. Sci. 17: 106, 330. 
oe See | Bull. Torrey Club ; 32: 147- 
t See Bull. Torrey Club 33: 528. 1906. 
t{ Such as Andropogon tener and Pinus Eluiottit. 
301-302, 305-306. 1906 
See Ann. N. Y. Acad. Sci. 17: 
