302 GEOLOGICAL SURVEY OF NEW JERSEY. 
streams, middle and northern counties. Quite plentiful on the 
Kittatinny Mountains. 
LARIX, Mill. 
Tamarack. Larch. 
L. laricina (Du Roi), B.S. P. (L. Americana, Michx.) 
In swamps, northern counties. Hudson: New Durham— 
Leggett. Bergen: Along Passaic River and at Closter—Austin. 
Passaic: Greenwood Lake—Rudkin ; Cedar Pond, Bearfort Mt. 
—Britton. Morris: Budd’s Lake—Porter ; abundant between 
Succasunna and Ironia—Britton. Sussex: Near Hamburg— 
Rudkin; between Andover and’ Waterloo, and near Sparta— 
Britton. Warren: Oxford Furnace—Henry Race; on Great 
Meadows, and a large grove south of Green’s Pond—Britton. 
Sus-Kinapom I1.—PTERIDOPHYTA. 
ISOETE. 
ISOETES, L. 
Quillwort. 
I. echinospora, Durieu, var. Braunii (Durieu), Engelm. 
In sandy bottoms of ponds and streams, in shallow water. 
Sussex: Pond west of Branchville, and in Morris Pond—Brit- 
ton. Morris: Lake Hopatcong—Porter. Ocean: In Toms 
River—Parker. 
I. riparia, Engelm. 
Camden: Gravelly shores of the Delaware River—Parker. 
I. Engelmanni, A. Br. 
Bergen: Closter—Austin. Sussex: In deep water, west side 
of Lake Hopatecong—Britton. Camden: Along C.& A. R. R. 
four miles from Camden—C. E. Smith. 
Var. gracilis, Engelm. 
Bergen: In the Passaic River near low-water mark—F. 
Ennis.* 
*See Engelmann, Trans. St. Louis Acad. Sci. iv. 384. 
