168 Rhodora [JUNE 
this species from Crown Point, New York, were described as pale 
yellow. They are pink, and the specimens collected by Mr. Jack in 
the Province of Quebec, with yellow anthers and previously referred 
to Crataegus praecox, can perhaps best be referred to Crataegus 
coccinea, Linnaeus, although these Canadian plants show great varia- 
tion in the time their fruit ripens. 
ARNOLD ARBORETUM. 
A NEW STATION FOR DENTARIA MAXIMA. 
C. H. BISSELL. 
Or the three species of pepper-root known to New England, Dent 
aria maxima, Nutt. is the most rarely found and the reported stations 
for it have all been in the state of Vermont, although I learn that 
there is in the Herbarium of the New England Botanical Club a 
specimen of this species collected at Lowell, Massachusetts, by Mr. 
W. P. Atwood, May, 1883. The two other species, D. laciniata, 
Muhl. and D. diphylla, Michx., are found in various parts of New 
England and are locally pretty well known. All the species develop 
foliage and flowers very early in the season before most other plants 
have started and they have finished their growth and often disappear 
by the first of July. In this part of Connecticut D. /aciniata and D. 
diphylla are found in moist or wet places in rich soil among rocky 
woods and are not common. At one station of which I shall speak, 
they are comparatively plentiful. This place, a rocky wooded hill- 
side with soil mostly a rich humus, moist all through, with springs 
along its lower edge, covers an area of perhaps an acre and is a fine 
station for early flowers. In late April or the first week in May, the 
date varying according to the season, when most of the woods are 
still brown and bare this spot is a mass of flowers and verdure. The 
first to come is the delicate little squirrel corn, Dicentra canadensis, 
DC. This is quickly followed by its near relative the Dutchman's 
Breeches, Dicentra Cucullaria, DC., and one of the pepper-roots, 
Dentaria laciniata, these two in greater numbers than any of the 
others. A few days later the other pepper-root, D. diphylla and the 
smooth yellow violet, Viola scabriuscula, Schwein. add their flowers 
