189 
jean 
— 
1 
depauperatus), also confined to the serpentine barrens; and a ye 
low-flowered tall Euphorbia (£. Darlingtonic). 
Red sandstone—This sandstone (Fig. 3D), of Triassic Age, 
is found extensively in eastern New Jersey and extends into the 
southernmost part of New York; it reappears in the Connecticut 
Valley. For rock gardens it is nearly as good as limestone and, 
like the limestone, it supports a fairly rich flora. The walking- 
fern, for example, occurs occasionally on damp outcrops of this 
sandstone. Much of the surface area has been destroyed by farm- 
ing and by building operations, so the original vegetation has largely 
disappeared in many sections. 
6. Diabase—This rock (Fig. 3D) forms the Palisades of the 
Hudson River, and occurs in several similar ridges extending east- 
vard to the valley of the Connecticut River. All have erupted 
Fic. 4.°°Ranges of representative native plants. 
Map 1. Black spruce (Picea mariana), a northern tree extending north- 
westward to Alaska. The stations.in central and southern New 
England are from a map by R. J. Eaton in Rhodora, Vol. 33, p. 96. 
1931. 
— 
. Rhododendron maximum, a shrub of Alleghenian distribution with 
oem outlying stations northward as far as Nova Scotia. It 
has been extinct for a long time at the ie Island loéali 
The globe-flower, Trollius larus (see also fig. 10d), serene con- 
fined to the limestones and sandstones of New York State, and 
northwestern Connecticut, and with an old record in Ohio. It repre- 
sents a species of very limited distribution 
4. The curly-grass fern, Schisaca pusilla (see also fig. 14), a member 
of a tropical group probably once occupying the now-submerged 
‘coastal plain between Nova Scotia and New Jersey. Map from 
. L. Fernald in Rhodora, Vol. 35, p. 86. 193 
The pine-barren sandwort, drenaria caroliniana, illustrating a spe 
cies of restricted coastal- ee distribution. Map from M. L. Fernald 
1937 
= 
in Rhodora, Vo 
6. Zygadenus ies a ehaeice of the coastal ah le a iew 
restricted stations in the Appalachian Mountains. 
The cardinal flower, Lobelia cardinalis, illustrating a species of broad, 
general distribution. Map from R. McVaugh in Rhodora, Vol. 38, 
3 
o) 
p. 276. 
The fire pink, Silene virginica, illustrating a species barely entering 
our area from the southwest. 
These maps have been made from data on herbarium specimens and records 
in various publications. 
