1913] Tidestrom,— Flora of Maryland and Virginia 103 
Pinus Tarna L. This stately tree is an inhabitant of the coastal ` 
plain. It forms forests in the southeastern quarter of our region, 
particularly about Norfolk and Cape Charles, Va., and on the opposite 
mainland. As one descends the Potomac River towards its mouth - 
this weird pine attracts attention on account of its loftiness. Where 
it forms forests, with the ocean for a background, the tall, straight 
trunks, devoid of branches to within a few feet of the top, give the 
impression of countless pillars supporting an uninterrupted roof of 
branches. 
My own observations as to the distribution of the species are as 
follows: At Franklin, Va., it is one of the characteristic trees on 
higher ground beyond the river area, which is inhabited by Taxodium 
distichum, Quercus nigra, Quercus lyrata, and species of Alnus, Betula, 
and Nyssa. It also forms more or less broken forests eastward towards 
the ocean. At Petersburg, Va., it is also the characteristic pine on 
the higher ground, while the area immediately adjoining the Appomat- 
tox River is inhabited by Liquidambar, Quercus nigra, and other 
species usually associated with these. Proceeding northward to 
Fredericksburg we find the tree losing itself, so to speak, among the 
oaks, hickories, and scrub-pines. ; 
Going northeastward from this point towards the Potomac River 
and crossing into Maryland, we meet with the tree in Charles County 
mixed with the scrub pine and shrubs. In June, 1911, I traversed 
Charles County from a point near the mouth of Nanjemoy Creek 
northward into Prince George’s County to Washington, observing 
the tree occasionally. After passing Pisgah, Charles County, how- 
ever, I did not observe a single tree of Pinus Taeda. It may occur 
north of that point but if so it must be rare and out of its range. The 
solitary trees which occur here and there in northern Charles County, 
as for example, at Marshall Hall, are lost sight of before one reaches 
the Prince George’s County line. In August, 1911, I explored the 
region lying between Leonardtown and Millstone, at the mouth of 
the Patuxent River. In this region I found the scrub pine to be the 
characteristic conifer, although Pinus Taeda was quite frequent. At 
the mouth of the Patuxent River Pinus Taeda is common. North 
of this point about 30 miles — at Chesapeake Beach, in Calvert 
County, I have observed scattered individuals, but I have not seen 
the tree inland from this point — at least not west of the Patuxent 
River. My own observations, therefore, lead me to believe that 
