Rhodora 
JOURNAL OF 
THE NEW ENGLAND BOTANICAL CLUB 
Vol. 10. February, 1908. No. 110. 
SOME TERATOLOGICAL FORMS OF TRILLIUM 
UNDULATUM. 
WALTER DEANE. 
THREE interesting cases of teratological modification have come to 
my notice in our common Painted Trillium, T. undulatum, Willd., 
perhaps more familiar under the name T. erythrocarpum, Michx. 
Although many monstrosities have been observed in the Trilliums of 
the northeastern United States, abnormal development in this partic- 
ular species seems to have been rarely noticed, for a careful search 
through American botanical journals has brought to light but two 
authentic records of this kind. It seems fitting, therefore, to record 
the forms recently observed. 
The first case is as follows. The plant grew at Squam Lake, 
Holderness, New Hampshire, on the grounds of Mr. Edwin DeMeritte, 
who has a summer camp there. He noticed this Trillium for the first 
time on August 6 or 7, 1907, and writes that “there were two stems 
precisely alike growing side by side... іп the leaf-mould and scanty 
soil on a rocky ridge near the lake.” One of these specimens Mr. 
DeMeritte picked and, through the kindness of Mr. William Brewster, 
` presented to the Gray Herbarium, where I have had access to it, as 
well as to the other specimens to be mentioned later. 
‘well formed and apparently 
‘ 
The plant was in fruit, which was 
ripe or nearly so, as it had turned red.” Unfortunately when the 
specimen reached Cambridge the fruit and its pedicel were gone, 
but I am assured that these were normal, the three persistent sepals 
being present. Mr. DeMeritte writes that the fruit “was at the end 
of the stem above the upper tier of leaves exactly as when only one 
tier is found." Whether the petals and stamens were normal it is of 
