1918] Knowlton,— Plants from South Weymouth 115 
PLANTS FROM SOUTH WEYMOUTH, MASSACHUSETTS. 
CLARENCE H. KNOWLTON. 
Great Ponp is a moderate-sized sheet of fresh water, perhaps a 
mile long. It lies in the southwestern part of Weymouth, bordering 
on Abington. As various coastal-plain plants have been reported 
there, I visited the region somewhat briefly on October 14, 1917. 
My first collection of interest was Rynchospora macrostachya, var. 
inundata, previously found here with the species by E. and C. E. 
Faxon and others (Ruopora, xiii. 105, 1911). I did not find much 
of the variety, and none of the species. There were also a few fruited 
plants of Sabatia Kennedyana Fernald, and a good many fruited 
specimens of Rhexia virginica, in moist shore gravel. 
The most exciting discovery was a large rather dense colony of 
Panicum debile Ell. (P. verrucosum Muhl.), a very interesting species 
which has the second glume and sterile lemma warty or verrucose. 
It grew luxuriantly in moist sandy soil near the pond. This is the 
first report of this grass north of Kingston, so this is an addition to the 
Boston Local Flora. It was first found at Plymouth by William Oakes, 
and for many years this was the only known New England station. 
It has recently been rediscovered at Plymouth, and there are speci- 
mens from Kingston, Carver, Lakeville, Barnstable, Yarmouth and 
Dennis in the New England Botanical Club Herbarium. Mr. 
Luman Andrews and others have found it at several stations in Spring- 
field. Prof. J. F. Collins and Prof. M. L. Fernald have found it at 
Hopkinton, R. I., and Mr. E. B. Harger at New Haven, Conn. 
Another plant of much interest was Cuscuta compacta, which was 
abundant on twigs of Acer rubrum and Clethra alnifolia. On the 
latter it formed spirals on stems one centimeter and more in diameter, 
“the ripening capsules capped with the marcescent corolla.” Another 
common shrub near the pond is Leucothoe racemosa. 
Further circuit of the pond shores ought to reveal other attractive 
plants. To any Boston botanist wishing an afternoon with coastal 
plain species I recommend a trip to this easily accessible region. 
HineHaM, MASSACHUSETTS. 
