ENGELMANN—NORTH AM. SPECIES OF JUNCUS. 495 
plant has been named.—Nearly allied to the last but differ- 
ing in many striking points, this little species represents a 
glomerule of a few lines in diameter, pushing out in all direc- 
tions a number of thread-like leaves; these are 6-10 lines 
long, and }—} line wide; the short terminal heads are quite 
loose, the flowers on such distinct peduncles that one would 
be inclined to consider them as single, if the pair of bracts 
were not wanting which always surround the base of sin- 
gle flowers in this genus; the lowest axils of a branch often 
produce longer peduncles, elevated above the glomerate 
mass, but shorter than the leaves, and bearing small heads, 
usually of two flowers only. Flowers pale green and whitish, 
and, especially the capsule, of very delicate structure, 13-2 
lines long; seeds 0.25 line long, 14 diameters equal to the 
length, similar to the seeds of the last species, but with much 
more prominent dark ribs, 4 of which are visible on the side. 
Pag. 452. J. repens, Hb. n. 29, South Carolina, Ravenel. 
J. faleatus ; add: capsula sepala subeequante; seminibus 
lanceolato-ovatis epidermide plus minus producta subcauda- 
tis irregulariter costato-reticulatis, areis elongatis levibus.— 
Sandy soil near San Francisco, Kellogg, Bolander, Hb. n. 
40. — Ripe seeds 0.35-0.40 line long, length equal to 2 or 23 
diameters; tips slightly or rarely considerably elongated, or 
the upper one wanting; surface palish and shining, with a 
thick rather loose epidermis, the cells of which correspond 
with the reticulation of the seed.—A form from the mouth 
of the Columbia, Douglas, communicated by Dr. Hooker, has 
an obtuse capsule and thick ovoid seeds.— The differences 
between this and what I have named J. Tasmanicus, p. 4538, 
note, seem to be almost too slight to be of specific value. 
Mr. Bolander sends from sphagnous swamps near Mendo- 
cino, California, a form which may be distinguished as var. 
paniculatus ; analogous to the paniculate forms of J. phwo- 
cephalus and others; the heads of the simple or somewhat 
compound panicle are about 5-flowered; Hb. n. 41, not yet 
in bloom in May; no stipular appendages at the base of the 
leaves. Maturer specimens would be desirable. 
Pag. 453. 28. b. J. oprusaTus, n.sp.: rhizomate repente 
stoloniformi; caulibus (spithameis) erectis levibus plerumque 
1-foliatis folia linearia plana tenuia fere equantibus; capitulis 
pauci- seu pluri-floris paucis in paniculam simplicem dis- 
positis ; floribus minoribus virescentibus extus leviter scabrel- 
lis pedicellatis; sepalis ovatis equalibus, exterioribus spe 
cuspidatis, interioribus obtusissimis capsula ovata obtusa bre- 
vissime mucronulata 3-loculari multo brevioribus ; staminibus 
6 dimidia sepala superantibus ovarium obtusum cum stylo 
breviore zquantibus; stigmatibus elongatis exsertis ; semini- 
bus ovatis obtusis seu vix apiculatis reticulatis. 
Near the Big Tree Grove, Mariposa, California, growing in 
