of a species in each of the states is indicated in the table 
by the following symbols: R (rare); L (localized); O 
(occasional); F (frequent); C (common). In some cases 
where aspecies has been reported in literature from one 
of the states under consideration, but no specimen has 
been observed from this state, the report is designated in 
the Table by the symbol X. 
Although many of the species are apparently limited 
to one or more of the several geographical regions which 
are found in the Southeast, others have been found to 
be universally distributed throughout the entire region. 
Some of the species which are limited in their distribu- 
tion are those which are apparently confined to the nar- 
row strip of subtropical vegetation found on the southern 
tip of the Florida peninsula; namely, the species of On- 
cidium, Cyrtopodium, Basiphyllaea and others. On the 
other hand, some few of the species are restricted to the 
mountains; namely, Habenaria psycodes and its variety 
grandiflora, H. orbiculata, H. viridis var. bracteata and 
Goodyera repens var. ophioides. This should be taken into 
consideration in interpreting the symbols in the ‘Table. 
For instance, a species may be found only in the Moun- 
tain and Piedmont regions of North Carolina where it is 
common, while, at the same time, it may not have been 
found at all in the Coastal Plain region. In this case, the 
species would be marked ‘‘common’’ (C) for North Car- 
olina because it is common within its natural limit of 
distribution. The most abundant and widely distributed 
species found in the southeastern states are Calopogon 
pulchellus, Habenaria ciliaris, H.cristata, Pogonia oph- 
loglossoides, Malaxis unifolia, Tipularia discolor and sev- 
eral species of Spiranthes. 
Some exceptional range extensions were discovered 
during this research; notably, Spiranthes Romanzoffiana 
from South Carolina, Listera convallarioides from the 
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