216 Rhodora [AvcusT 
HOTTONIA INFLATA: IN AMESBURY MASSACHUSETTS. Dogs IT 
OCCUR FARTHER NORTH?—I wish to ask through RuHopora for 
information as to the northern limit of Z/o/fomia inflata. The 
range given in Britton and Brown's Flora is Massachusetts to 
central New York and south to Florida. As there is a colony of 
this plant growing in a pool here in Amesbury it seems likely that 
this station must be about the northern limit. Can any one inform 
me if it occurs farther north? 
On the muddy banks of the same pool I have collected the 
interesting little moss Bruchia Drummondii, considered to be a 
southern species, I believe. — J. W. HUNTINGTON, Amesbury, Mass. 
AERIAL RUNNERS IN TRIENTALIS AMERICANA. 
ROBINA SILSBEE SMITH. 
(Plate 34.) 
THOsE acquainted with the Trientalis and with its life under ground 
are familiar with its slender white tuberiferous runners one or two 
feet in length. It is of great interest in the dry days of late summer 
to lift off the deep covering of moss and disclose this outcome of the 
summer's work with the well-developed tuber (fig. 3, f) already 
rooted in the ground. The protective bend of the bud is especially 
marked and at intervals along the runners are minute scales (fig. 3, 
e) similar in nature to those more developed on the upright stem 
(fig. 1, b). As the white runners thread the moss a touch of rose- 
color here and there shows where they have run nearer to the surface 
and felt the influence of the sun. These traces of color suggest in 
a novel way the stem-nature of the underground runners. 
Some years ago, in late summer, at Machias, Washington Co., 
Maine, a few peculiar specimens of the Trientalis were found. From 
the axils of the leaf-like scales (fig. 2, g fig. 1, h) were produced 
slender aérial runners (fig. 2, c). "They were of a deep carmine 
color, and an unusual coloring of the leaves suggested some injury 
or blight. These plants showed no sign of blossoms except in 
cases where blossoms had not perfected fruit (fig. 2, d). "These 
aérial runners, as they dip into the moss, form tubers similar to the 
