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name to a single European species (Ovchis adortiva L.), in which 
he has been followed by Bentham and Hooker. So far as I know, 
Michaux is the only botanist since the time of Swartz who has 
adhered to the Linnzean name Lzmodorum tuberosum. Everybody 
has followed in the wake of Brown and called the plant Calopogon 
pulchellum. Tuomas Morona. 
Note on Trifolium medium.—We received last July from Mr. ~ 
Ira Parker, of Houlton, Me., some very interesting specimens of 
Trifolium medium, L.. in which the heads were replaced by com- 
pound umbels, more or less completely formed. The specimens 
showed every gradation from compound umbels with very short 
pedicels to those with pedicels fully two inches long. The flowers 
were all pale, smaller than normal and apparently abortive. 
Mr. Parker informs us that several stalks from the same root 
were similarly malformed. The tendency to vary in the direction 
of a compound umbel is an interesting confirmation of the general 
belief that the head is a sessile umbel. F. L. Harvey. 
Orono, ME., JAN. 15, 93. 
Variegation accounted for—Last week some Callas were © 
brought to me because of their peculiar construction and colora- 
tion. One stalk had, for example, a large spathe and two smaller 
ones within, thus constituting what is commonly known as a 
“double” calla. Another stalk had a “bloom”’ with the ordinary 
single spathe, but close to and enclosing it was a leaf that might 
at first be easily mistaken for the ordinary spathe. It, however, 
had a petiole of an inch in length, and the venation was strictly 
that of a calla leaf, while in color it was white with the exception 
of the tip and the outer border, which was green. A leaf separate 
from the examples above mentioned was also brought. It had 
the long petiole and the ordinary shape of a calla leaf, but fully a 
quarter of the central portion of the blade was white, and the 
etiolated part blended gradually with the surrounding green. The 
three samples gave the whole story of the intimate condition be- 
tween the spathe and the ordinary calla leaf, and the ‘“ variega- 
tion” of the latter seemed only a result of a tendency to become a 
spathe in color, if not in shape. Byron D. HALSTED. 
RutGers CoLtecE, Jan. 27, 1893. bas 
