34 Rhodora [FEBRUARY 
bankment at Cumberland, Me., where it was first discovered by Mr. 
E. B. Chamberlain (Ruopona, vi. 195). 
Vicia hirsuta L. I found on July 4, 1898, in moist woods on the 
World's End farm at Hingham, Mass. It is not included in Thomas 
T. Bouvé's very comprehensive flora of Hingham. 
Vicia villosa Roth. Mr. W. P. Rich and I, while collecting in 
Marshfield, Mass., July 3, 1910, came across what we supposed to be 
luxuriant specimens of V. Cracca L. They grew in a dry field which 
had evidently not been in recent cultivation. Study of the pressed 
specimens shows them to be V. villosa Roth., easily distinguishable 
by villous stems, peduncles and leaves, and more vigorous growth. 
In V. Cracca the flowers are 10-12 mm. in length, in this species 13-16 
. mm. The pods, too, are larger, in my specimen 3.2 cm. long by 1 em. 
wide. 
Cassia marilandica L. I collected this species Sept. 3, 1902, in 
Chelmsford, Mass. It grew by the roadside near a brook, and had 
probably escaped from cultivation, as there is a house near. The place 
has been mowed in recent years, and I do not know whether the roots 
still persist or not. 
Trifolium dubium Sibth. I first collected this at Hyannis, Mass., 
June 15, 1909. It is very abundant there. This year I found it very 
common on Nantucket, and also at Harwich. Mr. F. S. Collins, in 
RHODORA xi. 131, speaks of this plant as not infrequent in Eastham. 
This species seems to blossom a month earlier than its nearest rela- 
tive, T. procumbens L. It is very slender, with few-flowered heads 
6-8 mm. in diameter. Apparently this is identical with the little 
shamrock plant of which the city florists raise so many specimens for 
the early spring trade. 
HiNGHAM, MASSACHUSETTS. 
BARTLETT'S DIOSCOREAE OF THE UNITED STATES.— Bulletin 189 
recently issued by the Bureau of Plant Industry, U. S. Department 
of Agriculture, contains matter of taxonomic interest not usually 
looked for in the publications of a bureau more especially devoted 
to the economic phases of botany. It is entitled, “The Source of the 
Drug Dioscorea, with a consideration of the Dioscoreae found in the 
United States. By Harley Harris Bartlett, Washington, 1910.” 
The subject is treated under two heads. “Taxonomic history of 
the Dioscoreae of the United States,” and “The Drug Dioscorea.” 
