45 
4. The smaller always globose short-pedicelled drupe, in place 
of the longer often ‘elongated and long-pedicelled fruit of the 
beach plum. 
5. A small and very turgid stone (nearly as thick as broad), 
which is pointed only at the base. The stone of Prunus maritima 
is flatter and usually pointed at both ends. 
6. Sprouts arising from the ground never produce flowers, as 
they frequently do in the case of Prunus maritima. 
This plum was discovered by Dr. Charles B. Graves, of New 
London, Connecticut, to whom I am indebted for specimens and 
much of the substance of this paper, and whose name I wish to 
associate with the plant as 
’ Prunus GRAVESII n. sp. 
A low, unarmed shrub; stems erect or ascending, reaching a 
maximum height of 12 dm., much branched, clothed with a dark 
rough bark, leafless like the ascending branches; twigs and. 
-branchlets less leafy, usually puberulent ; leaves orbicular or oval- 
orbicular, varying towards orbicular-obovate, 2-4 cm. long, rounded 
or retuse and apiculate at the apex, sharply serrate or those of 
the shoots crenate-serrate, abruptly narrowed, rounded or truncate 
_ at the base, sparingly pubescent or glabrate above, more pubes- 
cent beneath, especially on the nerves; flowers pure white, 
1-3 cm. broad, solitary or 2-3 together, scattered on the twigs. 
near the top of the shrub; pedicels stiff, stout, 6-10 mm. long, 
pubescent; calyx pubescent like the pedicels, the tube campanu- 
late, the segments oblong, as long as the tube; petals sub-orbi- 
cular, about 5 mm. in diameter, abruptly narrowed at the base ; 
drupe globose, solitary, 10-15 mm. in diameter, usually 13.5-13. 
mm. in diameter, deep purple or almost black with an abundant 
light blue bloom, bitter and ‘slightly astringent; stone broadly 
oval, broadly crested, 7.5-9 mm. long, 7-8 mm. broad and 6-6.5 
mm. thick, very turgid on one side, acute at the base, rounded at. 
the apex. 
In the year 1895 the species flowered during the last week oe 
May and matured its fruit the first week of September. 
