£d 
"m 1914] . Knowlton,— Orontium at Hyannis, Massachusetts 77 
freely. I found it there September 23, 1913, well scattered along the 
thickety slope of a little valley among the hills in Tisbury south of 
Tashmoo Pond. Excellent specimens were collected, some of which 
have been sent to the herbarium of the New England Botanical Club.— 
EvcENE P. BICKNELL, New York City. 
_ CONCERNING PHILADELPHUS PLATYPHYLLUS RyDB.— In the North 
American Flora, in his monograph of the Hydrangeaceae, Rydberg 
recognizes several segregates of Philadelphus Lewisii Pursh, some of 
which I identify with that species as synonyms. Among those which 
I examined was P. platyphyllus Rydb. from California. This seems to 
constitute a rather marked variety, distinguished by its broadly 
ovate to oval, sometimes nearly rotund leaves. The leaves of the 
type are exceedingly variable in size and shape, but rarely as broad 
as in the variety, and never subrotund, generally much smaller. 
(Extremes: Length 2.4-8.6 cm., breadth 1.3-5 cm.) The leaves of 
the variety are pretty uniform, mature ones varying from 4-7.5 cm. 
in length by 2.6-5 cm. in breadth. ‘They are of a pale cast beneath, 
the outside pair of the five primary veins most often appearing faint. 
In the type the leaves are greener beneath, with 3 (in broad leaves 5) 
primary veins. 
PHILADELPHUS Lewisu Pursh var. platyphyllus (Rydb.) A. H. 
Moore, n. comb. 
P. platyphyllus Rydb. N. Am. Fl. xxii, 167 (Dec. 18, 1905).— ALBERT 
Hanrorp MoonE, Washington, D. C. 
OnouTIUM AT Hyannis, Massacnusetts.— Mr. John Murdoch, Jr., 
in Ruopona, XVI, 18, mentions the occurrence of Orontium aquaticum 
in Middleboro, Truro and Provincetown. I am glad to record its 
occurrence at Hyannis, where I first found it in August, 1905, and 
have observed it several times since. This station lies in a wet dune- 
hollow or small kettle-hole, very near the road which leads southeast 
from the village to the shore cottages. When I first found it there 
were only a few bent-over spadices with ripened fruit, but in June, 
1909, I was fortunate enough to see the plant in full bloom. I have 
never seen Orontium growing elsewhere, and there are not over 25 
plants at this station.— CLARENCE H. KNow ron, Hingham, Massa- 
chusetts. 
