192 FERGUSON: CONTRIBUTIONS TO FLORA OF LONG ISLAND 
branches. The writer has observed two types of D. linearis, 
that on sea beaches being slenderer in all its parts with smaller 
leaves and bright green; that of muddy, salt marshes, heavier, 
stouter, fleshier and pinkish. The seeds of both types are identi- 
cal. 
Most herbarium specimens of both species are immature 
and in this state often difficult to determine. 
D. maritima matures later than D. linearis. The plant from 
Cold Spring Harbor, October 2, had ripe seed but that seems 
exceptional as even as late as October 20 the seed in a large 
majority of the plants had not matured. D. maritima grows 
ini wetter situations than D. linearis and is almost completely 
submerged at high tide. 
D. linearis matures probably late in September; all of the 
plants the writer collected in October had ripe seed. It grows 
in drier situations, farther back on the beaches nearly, if not 
quite out of reach of high tide. Or on the salt marsh—where 
it is just wet or damp. 
These remarks are based on comparatively few observations 
during one season and further experience may change or modify 
them. 
PORTULACACEAE. Purslane Family 
Claytonia virginica L. Millneck. Swampy woods. One 
small colony, 4/29/20. 
Northwest of Plattsdale. Rich 
woods. Two small colonies, 
4/22/21. 
Wet woods, south of North Beach 
and north of Woodside, exten- 
sive colonies, 5/10/23. 
RANUNCULACEAE. Crowfoot Family 
Anemone virginiana L. Montauk. Rich woods. 
Batrachium trichophyllum Valley Stream. Running water. 
(Chaix) F. Schultz 
Caltha flabellifolia Pursh. Central Islip. Pine barren stream. 
Determined by P. A. Rydberg. 
