1907 Knowlton,-- New Stations for Massachusetts Plants 13 
Rich’s original station in Winchester. Mr. M. L. Fernald also 
reports it from Rhode Island. (Rnopona, viii. 221). 
Aptos tuberosa, Moench. Mr. Rich and I found very many fine 
fruiting specimens of this common plant along the shores of Lake 
Monponsett, Halifax. Its usual mode of reproduction seems to be 
by rootstocks and tubers. 
Desmodium cuspidatum, T. & G. In open woods, Horn Pond 
Mt., Woburn; also in moist oak woods, Natick. 
Desmodium sessilifolium, T. & G. This plant, occasional in 
Connecticut and Rhode Island, was first reported in Massachusetts 
from Middleboro by William Boott (1870), and from Lakeville in 
1871. The Lakeville station was visited in 1899 by members of the 
New England Botanical Club, and again this year by Mr. Rich and 
myself. The plant is still abundant at this place, along the dry sandy 
roadside near Lake Assawompsett. We also found a clump of very 
large specimens in an old orchard two or three miles away, and a 
large quantity further south, along the causeway between Little and 
Great Quittacas ponds, in Rochester. The fruit of this species sticks 
even closer than that of the common kinds, and further search would 
probably show that the plant is well distributed over this flat sandy 
region, where it finds its northeastern limit. Mr. John Murdoch, Jr. 
tells me it is still abundant at Middleboro. 
Ilex opaca, Ait. A few good trees grow in the woods at Halifax, 
but no fruiting specimens were observed. 
Viola arenaria, DC. I found an abundance of this in a dry clearing 
in Ashburnham, Worcester county. I have never seen it in the Boston 
region. 
Viola sagittata, Ait. Abundant in moist sandy field, Kendal Green, 
Weston. Also in a similar situation near Cambridge reservoir, 
Lincoln. (C. H. Knowlton and E. L. Shaw.) 
Aralia trijolia, Dec. & Planch. Moist woods, Burlington. Tophet 
Swamp, Lexington. 
Hydrocotyle umbellata, L. This plant, so abundant on Cape Cod, 
seems even more plentiful in the northern part of Plymouth county. 
Messrs. Rich, Purdie and I found the submersed form in abundance 
at Indian Head Pond, Hanson. In Lakeville, at Little Quittacas 
Pond, where the water had been drawn off we found a belt some 
three rods wide of the terrestrial form, nearly surrounding the pond. 
The rootstocks formed an interlacing network, and one shore had 
