XTX. 27* 
nigra, Marsh.; along Roelif Jannsen’s Kill.—S. alba, L., and 
Var. vitellina ; the variety is very common along the streams, 
and elsewhere,—probably mostly planted in these places.—S. 
Babylonica, Tourn.; common in cultivation,—still I know of 
no instance in which it has really run wild.—S. myrtilloides, 
L.; sparingly found in a large peat bog on southern part of 
Stissing Mt. 
Populus tremuloides, Michx.; common.—P. grandidentata, Michx. ; 
rather common.—P. heterophylla. L. (?); swamp by Roelif 
Jansen’s Kill.—P. balsamifera, L.; Vur. candicans, and P. alba, 
L., are spreading widely by the root in this region.—P, 
dilatata, Ait.; still found about many old homesteads, the 
offspring from the plantings of the early Dutch settlers. 
ConIFER&. 
Pinus rigida, Miller; common.—P. strobus, L.; common. 
Abies nigra, Poir.; not rare; Eno Spruce Hole; Croghan Hill 
Marsh, etc.—A. Canadensis, Michx.; common.—A. balsamea, 
Marshall; frequent on Stissing Mt., and a few of our other 
wooded hills. 
Larix Americana, Michx.; rather common. 
Thuja occidentalis, L.; quite abundant towards the Hudson River, 
but not found immediately about Pine Plains. 
Juniperus communis, L. ; frequent in all of our woods.—J. Virgin- 
jana, L,; common, 
Taxus baccata, L., Var. Canadensis, Gray; rare on Stissing Mt. ; 
not scarce on Mt. Riga. 
ARACES, 
Arisema triphyllum, Torr.; common.—A. Dracontium, Schott. ; 
rather scarce; Thomas meadow, along Shekomeko; below 
Silvernail Falls, 
Peltanda Virginica, Raf. ; common. 
Symplocarpus foetidus, Salish. ; common. 
Acorus Calamus, L.; common. 
LEMNACE. 
Lemna trisulea, L.; scarce; pool by Wappinger’s Creek, in Ten- 
eyck’s meadow.—L. minor, L.; common.—tL. polyrrhiza, L. ; 
common, 
TYPHACE. 
Typha latifolia, L.; common. 
Sparganium eurycarpum, Engelm.; not common; in ditches in 
Wappinger’s marsh.—S. simplex, Huds. ; common. fis 
‘ NAIADACE®. 
Naias flexilis, Rostk. ; common. 
Zannichellia palustris, L.; common in nearly all the streams and 
ponds; Wappinger’s Creek, by Thompson Bridge. 
Potamogeton natans, L.; common.—P. Oakesianus, Robbins; 
Thomps6n Pond, near inlet.—P, Claytonii, Tuckerm.; rare; 
pool by R. R., Attlebury Hill.—P. lonchites, Tuckerm. ; rather 
common ; abundant in Wappinger’s Creek. ete.—P. amplifolius, 
Tuckerm. ; not scarce ; abundant at N. end of Stissing Pond, ete. 
—P. gramineus, L., common; Wappinger’s Creek.; Hoffman 
