“458 TRANS. OF THE ACAD. OF SCIENCE. 
Backer, FL. Bor. Am. 2, 191, unites it with J. wliginosus, 
which with him is what I have taken for J. alpinus ; ut 
that is also a 6-androus species. The botanists of Canada 
and of-our northern border ought to find it again and clear 
up these — 
with the head-flowered ooo and proves, as aeons wight 
ted befo 
x ween t that the 
really lateral; that in the former only one ne tate is formed, 
while in the others a series of them, from two to n indefinite 
orn are developed in centripetal order. ie our species a 
econd flower is more commonly not present, and its place is 
Sccuipied by a bud, which often, and especially later in the 
season, grows to a leafy excrescence (whence the name vivi- 
parus); sometimes even the first flower is replaced by a leaf- 
bud, and in rare instances a leaf-bud makes its appearance 
between two flowers as a third axillary organ. I have 
never seen more than two flowers, nor more than one leaf- 
bud in a head. Botanists who have the opportunity ought 
to investigate the variations in the inflorescence of this plant 
according to locality, season, or other circumstances. 
33. J. arTicuLatTus, Linn.; that form of the Linnean spe- 
cies which was distinguished by Ehrhart as .” /ampocarpus, 
and which is common in mene ae Europe, has a very limited 
range in North America. e specimens I have seen 
came from the New England Seles ( Boston, Bhesvky, 4 
h ue. a ro 
man 
ney) and from western New York (Penn Yan, Rawal to 
nee La Harpe adds fiwiendiedd .—Stems densely cespi- 
e from a creeping root-stalk, with us usually erect and 
eee one foot high; panicle short, dense-flowered, spreading, 
brown ; sepals mostly equal, lanceolate acute and mucronate, 
or inner ones slightly longer and sometimes obtusish ; stamens 
about via the ake of the sepals, and anthers as lon 
as filaments; ovary acuminate, terminating a style about 
half i its tenets “expat longer than the sepals, acute, or even 
rostrate, at least in all the American specimens seen by me 
and imperfectly pa the placentz not meeting in the 
ovate, obtuse at the upper, acute at the 
tre. 
lower, end, and at both strongly egg: t 0.3 line or a little 
less long, and about half as much in diam meter; reticulate, 
with arez finely cross-lineolate ; 7 or 8 ribs visible. 
34. ds —_, ‘\psetie Delph, 2, 233 ex Koch wes 
730; J. fusco-ater, Schreb, ex Kunth En. 3, 326, /. aint, 
