BICKNELL: FERNS AND FLOWERING PLANTS OF NANTUCKET 499 
among them. There are also a few outlying small shrubs. On 
June 11, 1909, these trees were in full blossom above, the petals 
mostly fallen from the corymbs on the lower branches. Flowers 
1.5-1.8 cm. in natural spread, the petals drying pinkish; stamens 
5-7. More treelike than any other native Nantucket thorn, the 
largest examples ten to thirteen inches in circumference near the 
base and twelve to fourteen feet tall. Branches more ascending 
than in any of the other Nantucket species, the leaves less deeply 
lobed and on the upper surface more or less roughened with an 
hispidulous pubescence; corymbs and young fruit villous, the 
flowers with fewer anthers than any of the other species. 
Note—Mrs. Owen’s catalogue includes “ Crataegus tomentosa 
L. var. punctata Gray.’’ It is scarcely probable that the species 
intended was any other than some one of those here reported. 
PRUNUS SEROTINA Ehrh. 
Common; not ordinarily of a greater height than ten or twelve 
feet and often much lower, in the most favorable situations reach- 
ing a height of eighteen to twenty feet. The bark of the trunk is 
sometimes unusually smooth and pale. In full blossom from be- 
fore the middle of June until the end of the month. 
PRUNUS MARITIMA Wang. 
Very common, occurring in all parts of the island, even on 
Saul’s Hills. In full blossom May 30 to June 15, 1909, and some 
blossoms remaining as late as June 22. Of unusually large size 
in a thicket near Tristram Coffin’s homestead, the largest example 
about 10 feet tall and 15.5 inches around near the base. 
*PruNus AVIUM L. 
Spontaneous at several stations among young pine trees south 
and southwest of the town, also in pine scrub about two miles 
out on the old south road. No trees observed over ten feet in 
height and some bearing fruit when only three feet high. 
*Prunus CERASUS L. 
Here and there about long-abandoned farms and occasionally 
in wilder places, as in a thicket in Shawkemo with Crataegus 
Bicknellii, and among pines perhaps a mile southeast of the fair 
grounds; thicket in Squam. 
