ENGELMANN—NORTH AM. SPECIES OF JUNCUS. 449 
spatha paniculam parvam contractam equante seu raro su- 
perante; sepalis equilongis lanceolatis, exterioribus apice 
subulatis, interioribus latioribus mucronatis stamina 6 plus 
quam duplo superantibus; antheris filamenta equantibus; 
stigmatibus ovarium ovatum cum stylo brevi vix z2quantibus 
inclusis; capsula straminea ovata sursum tricocca retusa tri- 
loculari sepala equante seu paulo superante; appendicibus 
semini ipso lineari costato-lineolato paulo brevioribus. 
On the banks of Fox river, near Ringwood, in Northern 
Illinois, “a few years ago, in an open wood, now plowed 
over,” Dr. George Vasey, who paid a good deal of attention 
to this genus and to the botany of his neighborhood generally, 
and for whom this species is named; on the Saskatchawan, 
Bourgeau; in the Rocky Mountains, Drummond; and, mixed 
with J tenuis, in Colorado, #. Hall.—The wiry stems, 1 or 
14 to 2 or 24 feet high, are covered at base with brown 
sheaths, the innermost of which bear very slender terete 
leaves, shorter than the stem, and channelled only near the 
base, so that our plant is thus most closely allied to those of 
the first section; its inflorescence, however, is decidedly term- 
inal, and connects it with J. tenuis and its relatives. The 
compact panicle is 3-1 inch long, green, or, when fully ripe, 
of a light brownish straw color; flowers 2 lines long; seeds 
very slender, body about 0.3, and with the appendages, 0.5— 
0.7 line long. This species is the western representative of 
J. Greenti, trom which it is distinguished by the longer stems, 
the terete, scarcely channelled leaves, the lighter colored 
flowers, the shorter capsule, and by the slender seeds with 
longer appendages. 
22. J. Green, Oakes & Tuckerm. Sillim. Journ. 45 (1843), 
p. 37; Steud. Glum. 2, 305; Gray Man. ed. 2, 483; czespitosus ; 
eaulibus (pedalibus sesquipedalibus) rigidis strictis striatis basi 
parce stramineo-vaginatis ; foliis caule brevioribus teretiuscu- 
lis totis proefunde sulcatis; spatha paniculam contractam ad 
ramos ultimos secundifloram plerumque longe superante ; 
sepalis (stramineo-fuscis) lanceolatis subulatis subzequalibus 
seu interioribus paulo brevioribus cuspidatis stamina 6 duplo 
superantibus ; antheris filamenta aquantibus ; capsula ovato- 
oblonga retusa sepala excedente (pallide fusca) triloculari; 
seminibus obovatis costato-lineolatis breviter caudatis. 
On the coast of Massachusetts and Rhode Island (to Long 
Island?) and on the Saco river at the foot of the White 
Mountains.—Few and pale sheaths at the base of the stem; 
leaves deeply channelled all their length; panicle contracted, 
with erect, one-sided branches, 1-14 inches long; flowers 
1.7-1.8 lines in length; seeds 0.25-0.30 line, and with the 
appendages, 0.37-0.40 line long, appendages about half as 
long as the diameter of the seed. 
