FLOWERING PLANTS OF NANTUCKET 3881 
maturity and varying in color from white through pink and red 
to purple all in the same cluster, producing a variegated and 
very pleasing color effect. 
It has been suggested by Professor Wiegand in a paper entitled, 
‘““The genus Amelanchier in eastern North America’”’ (Rhodora 14: 
117-161. pl. 95, 96. 1912) that this Nantucket shrub is a hybrid 
between A. oblongifolia and a proposed new species, named by him 
A. stolonifera. This theory, I think, scarcely takes sufficiently 
into account that A. nantucketensis is one of Nantucket’s char- 
acteristic shrubs, more numerous indeed, and more generally 
distributed than the other shadbushes of the island, and also 
bearing fruit more abundantly and with greater regularity season 
by season. In Professor Wiegand’s description of his A. stolonifera 
there seems to be little to differentiate it from A. nantucketensis 
beyond larger petals, a variable character, I find, in A. nantucket- 
ensis, and densely woolly summit of the ovary. In A. nantucket- 
ensis the exposed surface of the ovary is, as I have described it, 
nearly or quite glabrous; this is its condition at maturity, in its 
earlier stages it is clothed with a white woolly pubescence. Its 
close relationship to Professor Wiegand’s new species is also to be 
inferred from its having been attributed to Nantucket on the basis 
of Miss Day’s collection, No. 95, June, 1900, a sheet of which in the 
herbarium of the New York Botanical Garden formed part of the 
material used in formulating my description of A. nantucketensis. 
This specimen is the counterpart of numerous specimens of my 
own collecting, and was not cited only for the reason that the 
species was so abundant on Nantucket that no need appeared of 
any Citation of specimens other than the type and co-type. 
Crataegus chrysocarpa Ashe. A group of four shrubs, June 29, 
1912, about two miles west of the original station. 
Prunus maritima Wang. I do not know that the yellow or 
amber fruited form of the beach plum has ever been found on 
Nantucket. I was told that it occurred on Tuckernuck and it is 
locally abundant on Chappaquiddick Island and in other parts of 
Martha’s Vineyard. It is not generally disseminated and is evi- 
dently scarce elsewhere than in the localities where it abounds. 
I have myself seen little of it except as gathered by the islanders 
