1903] DISTRIBUTION OF ISOETES SACCHARATA I9gI 
the Sassafras River, about 6*™ east of Howells Point, and is 
nearly cut off from the river by a sand spit. On the south shore 
of this shallow bay, almost due south of its mouth, a very inter- 
esting collection of Isoetes was made by T. C. Palmer, August 
12,1895. The habitat as described ona label in the National 
Herbarium is characterized by ‘‘reddish sand capped lightly with 
mud.” The material departed in a marked degree from typical 
IL. saccharata Engelm., as was pointed out in the collector’s 
interesting contribution in the BoranicaL GazeETTE in 1896 (¢. c.). 
In 1900, A. A. Eaton made this material the basis of his new 
variety J. saccharata Palmeri. In a letter to the writer, Palmer 
states that at none of his other stations does the Isoetes grow 
in such abundance as at Lloyds Creek. 
8. Zurners Creek empties into Sassafras River from the south 
about 4*™™ east of Lloyds Creek. On the south shore of 
Sassafras River just below the mouth of Turners Creek, a station, 
published here for the first time, was located by T. C. Palmer, 
July 18, 1897. 
9. Hunting Creek empties into the Potomac River from the 
west immediately south of the city of Alexandria, Va. The 
highway from Alexandria to Mount Vernon is graded for some 
distance into the shallow part of the creek from each side, and 
crosses the middle part by a long bridge. The original station 
is a gravelly bed near the bridge on the right side of the embank- 
ment as the bridge is approached from the Alexandria end. The 
first collection at this place was made by George Vasey and F. 
V. Coville, July 22, 1888. It has been visited several times 
since, a recorded visit® having been made by W. R. Maxon, 
September 22, 1900. Maxon also collected at this station, Sep- 
tember 7, Igo1, a specimen of this date being placed in the 
National Herbarium. The writer secured specimens from the 
same place August 11, 1902, and also found it on the same side 
of the embankment which leads from the opposite end of the 
bridge toward Mount Vernon. These areas are not large, but 
the material is fairly abundant. The soil consists of pebbles 
covered witha layer of mud and the principal companion plant 
*Sixth List of Additions to the Flora of Washington. oc. cit. 
