ENGELMANN—NORTH AM. SPECIES OP JUNCUS. 489 
His specimens were collected in April in full bloom; the 
stem is nearly four feet high, the panicle six inches long; 
the flowers, absolutely identical with European specimens, 
are easily recognized by their broadly margined sepals, the 
inner ones being deeply emarginate, and by their thick and 
short subulate stigmas. I have also seen specimens said to 
have come from the coast of New Jersey; Baldwin collected 
it on the La Plata in South America, and Chamisso and 
■ Gaudichaud brought it from the same regions. J. macrocar - 
pus , Nees, from the Cape of Good Hope is the same species. 
2. J. Rcemeriantts, Scheele, Linnaea, 22, 848 ; Walp. Ann. 
3, 655 : rhizomate longe repente; foliis caules (2-3 pedales) 
robustos rigidos teretes sequantibus; spatha paniculam supra- 
decompositam patulo-effusam longe superante; glomerulis 
3-5-floris; sepalis oyato-lanceolatis 5-nerviis exterioribus 
acutatis, interioribus brevioribus obtusis ssepe mucronatis; 
antheris six late linearibus filamento ter quaterve longioribus 
demum deciduis ; stylo ovario ovato multo breviore ; capsula 
ovata obtusa mucronulata sepala exteriora sequante placentis 
tumidis triloculari; seminibus late obovatis obtusis vix apicu- 
latis tenuissime (sub lente) costato lineolatis (J. maritimus , 
auct. Amer.). 
Atlantic coast of the United States from New Jersey to 
Florida and Texas.—Closely allied to the European J. mari¬ 
timus , for which it has always been taken, until Scheele, 
without discovering its distinctive characters, gave it a new 
name. It is well marked by an open spreading panicle with 
slender, flexible branches, deciduous anthers; a very short 
style, which is not half as long as the obtuse ovary; an obtuse, 
short, deep brown capsule; remarkably large, spongy pla¬ 
centae, which fill the greater space of the capsular cavity, and 
the like of which I have not seen in any other species; and 
obtuse, tailless seeds, marked with very slight, wavy ribs and 
slighter cross lines.—J. maritimus bears a rigid, fastigiate 
panicle, persistent anthers, an ovary attenuated into a style 
of nearly its own length, a greenish, acute capsule which 
usually exceeds the sepals, placentae of ordinary size, and 
seeds with distinct tails and stronger ribs. 
The light, brownish flowers are 1.5 lines, and the seeds 0.3 
line, long, and nearly 0.2 line thick. 
This is the only Juncus in which occasionally unisexual 
specimens occur (Georgia, Le Conte, in Hb. Acad. Philad., 
and Florida, Chapman, in Hb. A. Gray); these plants, pistil¬ 
late by abortion of the stamens, have a stricter but fewer 
flowered panicle, and thus present a very unusual aspect; our 
southern botanists ought to find out under which conditions 
this form occurs, and whether any corresponding staminate 
plants grow with them. 
