1919] Spring Field Trip 87 
plants which are found in these adjacent counties should certainly be 
expected in Berkshire County. The list of such species is, as inti- 
mated, a large one and from it there have been selected the following 
easily recognized plants which approach southwestern Berkshire 
County very closely, some of them being found within one mile of our 
border and all within a distance of ten, or in a few cases only twelve 
or fifteen miles, from Mount Washington or Sheffield. 
TRIGLOCHIN PALUSTRIS, marshes, Pine Plains, N. Y. (Character- 
istic of calcareous marshes throughout the Canadian zone but in New 
England known only from Maine.) 
ERIOPHORUM ANGUSTIFOLIUM, peat bogs, Pine Plains, N. Y. (One 
of the early species, maturing in Maine during May and early June 
but in New England unknown except in Maine.) 
RYNCHOSPORA CAPILLACEA, abundant in caleareous marshes at 
Pine Plains, N. Y.; also at Salisbury, Ct., and on limy ledges in 
Vermont. (In northern Maine this species is in recognizable condi- 
tion during June, although it matures later.) 
CAREX CRAWEI; moist fields and meadows, Salisbury, Ct. and some- 
what frequent in the calcareous regions of central and western New 
York; also in the limy soils of Aroostook County, Maine. 
CAREX CASTANEA, alluvial soils and meadows, Salisbury, Ct.; also 
in Vermont and common in the calcareous regions of Maine. 
WOLFFIA COLUMBIANA, surfaces of ponds and pools, Salisbury, Ct. 
(The tiniest of the Lemnaceae, the minute plants floating just at the 
surface of the water and without rootlets.) 
JUGLANS NIGRA, indigenous at North Canaan, Ct. (Reported but 
unverified from western Massachusetts.) 
MORUS RUBRA, frequent in mountain woods, Dutchess County, 
N. Y.; Salisbury, Ct.; also in southwestern Bennington County, Vt. 
(Reported but unverified in Massachusetts.) 
RANUNCULUS CIRCINATUS, ponds and streams, Salisbury, Ct.; also 
in Vermont. 
TROLLIUS LAXUS, Swampy woods and meadows, Cornwall, Ct. 
(Reported but unverified from the Connecticut Valley in New Hamp- 
shire; also from Maine.) 
CORYDALIS AUREA, frequent on limestone cliffs and in rocky woods, 
Dutchess County, N. Y.; also in western Vermont. 
HEUCHERA AMERICANA, wooded banks of the Housatonic, Litch- 
field County, Ct. 
RIBES ROTUNDIFOLIUM, rocky woods and hillsides, Dutchess County 
N. Y.; and Salisbury, Ct. 
HyYBANTHUS CONCOLOR (Green Violet), very abundant in May “in 
a cold mountainous woods about a mile from the village of Pine Plains. 
It was growing very luxuriously — many of the stems being all of three 
feet in height — and covered several acres of ground almost to the 
exclusion of other herbacous plants.” 
