507 
JTJNCACEJE. (RUSH FAMILY.) 
mg; the numerous pale green heads 4 - 8-floicered ; sepals lanceolate, 
acute, herbaceous, shorter than the oblong pod; seeds tailless , minute¬ 
ly and barely pointed at each end. (J. subverticillatus, Muhl., not of 
Wulf. J. pallescens, Meyer , as to N. American plant. J. polycepha- 
lus, var.? depauperktus, Torr. FI. JV. Y.) — Wet swamps, common 
southward and westward. Aug.—Roots fibrous. Stems often de¬ 
cumbent or floating and rooting: branches of the cymose panicle 
slender and diverging. Heads 2" long. Pods pale, sometimes twice 
the length of the calyx when ripe. This, which is pretty clearly the 
J. acuminatus of Kunth, is perhaps the plant of Michaux; but the 
next is taken for that by American authors. 
9. J. acuminatus, Michx. Stem erect (10'-15' high), te¬ 
rete ; leaves slender, nearly terete ; panicle icith rather slightly spread¬ 
ing branches , bearing few or many 3-8-flow ered chestnut-colored heads; 
sepals lanceolate or linear-lanceolate, very acute, one third or one 
half the length of the prismatic triangular and abruptly acute pod; 
seeds tail-pointed at both ends. (J. sylvaticus, Muhl. J. Canadensis, 
pay.) — Peat-bogs, and borders of ponds. July, Aug.— Pods turn¬ 
ing deep chestnut-brown. Tails shorter than the body of the seed. 
■*" — Stamens 6. (Heads chestnut-purplish.) 
10. J. pclocarpus, E. Meyer. Stem erect (10'-18' high), 
terete; leaves 1—2, slender, nearly terete; panicle spreading; heads 
2 - 7-flowered; sepals oblong , obtuse , scarious, rather shorter than the 
triangular-ovate minutely short-pointed (brown) pod; seeds tailless, 
acute at each end. —Bogs, New York (head of Seneca Lake !), Mas¬ 
sachusetts, and northward. June, July. — Aspect of No. 10, and of 
J. acutiflorus. 
H. JT. militaris, Bigel. Stem stout (2° high), bearing a soli¬ 
tary cylindrical bayonet-like leaf below or near the middle, which over¬ 
tops the crowded panicle; heads numerous , 5- 10-flower ed; sepals 
lanceolate , sharp-pointed , as long as the ovate taper-pointed pod; seeds 
oval, not appendaged. — Bogs, Tewksbury and Plymouth, Massachu¬ 
setts, and Pine barrens, New Jersey. July, Aug. — Rootstock thick, 
creeping. Leaf stout, l°-2° long. Heads 2" - 3" wide, brown. 
12. J. noddsus, L.! Stem erect, slender (6'-15' high), 3-5- 
leaved ; leaves terete, short; heads 1 -2, or several and clustered , glo¬ 
bose, many- (10-20-) flowered; sepals lanceolate, awl-pointed, nearly 
as long as the slender 3-angular taper-pointed pod; seeds oval, mi¬ 
nutely short-pointed at both ends. (J. Rostkdvii, E. Meyer.) — Var. 
megacephalus, Torr.: heads rather numerous and larger, 50 - 60- 
flowered, crowded in a dense cluster at the summit of the stout and 
rigid stem (2° high). — Gravelly borders of streams, &c., common 
northward; the var. on the sandy shore of Lake Ontario at Sackett’s 
Harbour. Aug. — Rootstock slender. — Quite distinct from No. 6 
and No. 7, with which it has been confounded. 
