I 
127 
botanists, and especially so to those who enjoy the study of the geo- 
graphical distribution of species and its various causes. I can con- 
tribute a brief chapter to the literature of this subject with some facts 
obtained during two recent expeditions to the Kittatinny (Shawan- 
gunk) Mountains of New Jersey and New York, made for the purpose 
of more thoroughly elaborating the flora of the former State. 
This mountain chain forms a wall of almost constant altitude, 
averaging over 1,200 feet in height, along the eastern side of the 
valley of the Delaware River, from Port Jervis to the Water Gap, 
and excludes many plants of more northern and western range from 
the interior portions of New Jersey. Its summits and western slopes 
are composed of a coarse or fine, very hard silicious conglomerate or 
sandstone, with little soil but that derived from the limited disinteg- 
ration of these rocks. While the mountain sides and summits are 
extensively glaciated, there is very little glacial drift on the ridge, as 
Dr. A. A. Julien has pointed out* for the vicinity of Sam's Point, 
New^ York, and my observation is that it holds this character through- 
out its extent in New Jersey. The soil of the summit and slopes is 
cansequently highly silicious. 
_ My first trip was made on August 31st, 1883, to the vicinity of 
High Point, Sussex Co., and the following unlocked for plants were 
noticed: 
/uncus Greemi\ Oakes & Tuckerm*, a species previously 
known only from sandy soil along or near the coast, was found on the 
very top of High Point at an elevation of t,8oo ft. The plants were 
somewhat smaller than those growing abundantly at several points 
^long the Raritan River, the Staten Island, Long Island and New 
England coasts, but Dr. Engelmann pronounced them this species, 
shortly before his death. Solidago puberula, Nutt., was very abundant 
on the mountains, both here and at Sam's Point, and constantly 
^ssociated with S. bicolor. Before this I had been accustomed to 
find it only along and near the coasts and in the sandy plains of the 
southern part of the State, Oroniiufn aquaiicum, L., grew along 
the shore of Lake Nascia, a pond just below the summit. 
These plants and the shortly previous discovery by Mr- A. H. 
S^ith, near Lake Mohunk,t of Corema Conradii, Torr., a plant 
)vhose limited distribution renders Its presence there doubly interest- 
ll^g, induced me to make special search for other sand-loving species 
during my visit to the same region on June 15th of the present year. 
As the result of this, Prunus piimila, L., the sand cherry, which grows 
on sand bars and islands in the Delaware River, and in similar situa- 
tions northward, was found on the summit of the mountains south- 
^^est of High Point, among dry rocks; Tephrosia Virgimana.Vtx^., 
^^d Lespedeza hirta. Ell, so abundant in sandy soil southward, in 
several places on the western slope; Lupinus perennis, L., and Calystc 
.p^ ^piiham^a Pursh, near the summit, and the latter known at present 
plant. 
Que reus ilicifolia^ Wang 
"" Trans. N. Y. Acad. Sci. Vol. iii.. ined. 
f See Bull. Torr. Club, ix. 
