OF TAXODIUM DISTICHUM AND RELATED SPECIES 393 
The range of 7: imbricarium is not so well known, as compara- 
tively iittle attention has been paid to this species. Although it 
appears to be much more abundant than 7. distichum in most of 
the states in which it grows, most botanists who have observed it 
have probably considered it identical with that species, and there- 
fore made no especial note of it. It is not even mentioned in any 
edition of Chapman’s “ Flora of the Southern United States.” 
Professor Sargent * says of the range of this species: ‘The 
acerose form * * * is not uncommon in South Carolina, in 
northern Florida, and in the neighborhood of Mobile, Alabama.” 
It has also been reported from North Carolina by Nuttall, Croom 
and others, and is very abundant in Georgia, where it perhaps 
reaches its best development. The evidence in favor of its occur- 
rence in Virginia has already been given. Outside of these six 
states I find no record of it. 
I. imbricarium is common wherever the conditions of soil and 
topography are favorable for its development, in those portions of 
the coastal plain where both the Lafayette and Columbia forma- 
tions are present, away from the coast and larger rivers. It seems 
to approach nearest to the coast in North Carolina, where Wood and 
McCarthy have recorded a station for it in their Wilmington Flora,} 
in a swamp about six miles from the ocean, in New Hanover 
county. In Chatham county, Georgia, I noticed last June that it 
extended to within twelve miles of Savannah on both the Central 
of Georgia and Georgia and Alabama Railways. These two rail- 
roads run almost perfectly straight through the county, and at the 
points mentioned they are about a mile apart. On consulting Mr. 
McGee’s map I found that these localities are just at the coast- 
ward edge of the Lafayette formation, thus furnishing additional 
evidence in support of my theory. 
Of the inland limit of 7. imbricarium little is known. In the 
eastern part of Georgia I have seen a few specimens as far up as 
Millen, 78 miles from Savannah, and in the western part it is 
abundant in certain spots as far up as the southeastern corner of 
Sumter county, 200 feet above sea-level, 180 miles west of Savan- 
nah and about 125 miles north of the Gulf of Mexico. Here it 
*Sylva N. A. 10: 152, in footnote. 
} Jour. Elisha Mitchell Sci. Soc. 3: 123. 1886. 
