148 THE JOURNAL OF BOTANY 
iii. 859, 1827, is an uncertain plant, as yet not strictly known); 
this, and its numerous gemme (or winterbuds) are two of its most 
characteristic features. 
e only others in the pusillus group that produce these in any- 
thing like such abundance are P. gemmiparus Morong (Bot. Gaz. 
v. 51, 1880) = P. pusillus L. var.? gemmiparus Robbins (in A. Gray, 
an. ed. 5, 489, 1867); and a variety of pusillus (P. Berchtoldi 
Fieber almost certainly) from Rochfort-sur-mer, Char.-Inf., France, 
gathered and sent to me by M. Foucaud in August, 1889. This 
latter has them almost as large and abundant as the American 
_ plant I am now naming. I propose the name P. strictifolius for 
this species; last year I did not sufficiently recognize the marked 
features that make this stand apart from the numerous forms of the 
pusillus group. It has certainly a likeness to rutilus in habit and 
stipules, but it differs widely in that the lower stems are much 
l ius. The U.S.A 
plant is not in fruit, but the spikes and flowers are sufficiently 
advanced to see they correspond with the Canadian (Lake Scugog) 
plant, which is in good fruit. 
_P. strictifolius, sp. n.—Stems 12-20 in. high, simple for two- 
thirds of their length, then divaricately branched, often with short 
patent branches ending in gemmw. Leaves 12-15 lin. long by 
Stipules linear-lanceolate acute, on the lower part of the stem 
soon decaying, on the upper and branches as long as the inter- 
nodes, closely appressed to the stem, finely but strongly veined 
ith numerous veins, strongly reticulate between. 
_Peduneles rigid, 12-18 lin. long, slightly tapering upwards, 
spikes slightly interrupted, 8 lin. long (with 8-8 fruits), sepals 
(perianth-segments), long-hafted, orbicular, truncate at the base. 
Fruit 1 lin. long by 4 lin. broad, obliquely elliptical (with the 
style nearly in a line with the ventral face), ventrally nearly 
straight, dorsally semicircular, with the face rounded, and very 
ed. 
faintly 2-carinated 
Mr. Hill remarks that this «showed flowers in a good man 
plants but no fruit. It breaks up into pieces with the bud-like ends 
of the branches attached, or these short branches break off late in 
the season with the greatest facility, and thus readily propagates 
itself. I do not despair of finding it in fruit yet, but realizing that 
