451 
Jong as the perianth; the anthers reddish brown, about 1 mm. long, exserted between 
the perianth parts: capsule. broadly obovate, muticous, 1-celled, but apparently 
3-celled from the deeply intruded placentie, about as long as the perianth: seeds linear- 
oblong, 0.5 to 0.6 mm. in length, attenuate-apiculate, conspicuously 12 to 16-costate, 
finely translineolate.—Eastern Texas. This plant and the next, together with J. 
marginatus proper, are the only American Junci with anthers of a reddish color, 
those of all the other species being yellow. 
20. J. marginatus setosus Coville, Proc. Biol. Soc. Wash. viii, 124 (1893), 
Plant closely resembling J. marginatus aristulatus, but often closely tufted, 30 to 75 
cm. high: leaf-blade and infloresence as described in that plant: inner perianth party 
narrowly ovate to lanceolate, setiform-acuminate at apex: seed oblong, 0.3 to 0.4mm. in 
length, reticulated in 12 to 16 longitudinal rows, the areole nearly isodiametrical, 
transversely plurilineolate.—Throughout all except the coastal region of Texas. 
21. J. filipendulus Buckley, Proc. Acad. Phila, 1862, 8 (1862); J. leptocaulis Torr. & 
Gr. in Engelm. Trans, St. Louis Acad. ii, 454 (1866), Perennial, erect, 12 to 30 em. 
high: rootstock branching, the branches hardly longer than broad, closely congested: 
stems closely tufted, flattened, at least when dry, 1 mm. or less in breadth, 1 to 3- 
leaved: radical leaves about one-half the length of the stems, their blades 1 to 2.5 
mm. broad: inflorescence cousisting of 1 to 5, commonly 2 or 3, heads, each 4 to 7-flowered: 
flower 4 to6 mm, long: perianth parts lanceolate, with hyaline margins and green midrib, 
acuminate into an aristate apex, the outer slightly the shorter: stamens 3, about 
one-half as long as the perianth; the yellow anthers much shorter than the filaments: 
capsule one-half to two-thirds as long as the perianth, obovate, retuse, mucronate by the 
persistent base of the style, almost 3-celled, the septa not quite uniting at its center: 
seed 0.45 to 0.55 mm. in length, oblong, acute at both ends, with 14 to 18 prominent 
longitudinal coste (and often as many intermediate, much less conspicuous ones) 
the intermediate areas smooth, with an occasional transverse line.—Apparently con- 
fined in Texas to the northern portion of the State. The leaf-blades of this species 
are conspicuously constricted and slightly bent at a point not more than 1 or 2 em. 
from the apex, a character common to all the Graminifolii, but more pronounced in 
this than in any other species. 
2. JUNCOIDES Adans. 
Perennial plants, tufted, grass-like in appearance, in most cases 
sparsely pilose, with flat leaves, inflorescence varying as in Juncus, 6 
stamens (in the North American species), and 1-celled, 3-seeded cap- 
sules.—A genus principally of boreal, cireumpolar distribution (Luzula 
D.C.). 
1, Juncoides campestre (L.) Kuntze, Rev. Gen. Pl. 722 (1891); Juncus campestris 
L. Sp. PL. i, 329 (1753). Perennial, densely tufted, erect, 10 to 30 cm, high: stem 1 
tu 2mm. in diameter, terete or nearly so, 2 to 4-leaved: leaf-blades flat, grass-like, 
2to7 mm. broad, acuminate at the apex to a blunt almost gland-like point, spar- 
ingly provided with cobwebby hairs when young, glabrate with age, inflorescence 
umbelloid, its lower leaves with green blades, the lowest often exceeding the inflor- 
escence, its branches of very unequal length, each bearing at its apex an oblong to 
short-eylindrical dense spike 5 to 7mm. in diameter: flowers inserted each in the axil 
of ascarious, ovate, acuminate bract, and bearing at base a pair of similar but smaller 
bractlets fimbriate at the apex: perianth 2 to 3 mm. long, from light to dark brown in 
color, its divisions lanceolate-ovate, acuminate: stamens 6, about one-half as long as 
the perianth: capsules obovate or broadly oblong: seed dark brown with an oblong 
body, about 1 mm. long, reticulated in about 50 to 100 longitudinal rows, with 
smooth areole, obtuse at the apex, bearing at the base a white, loosely cellular car- 
uncle about one-half as long as the body.—EKastern Texas. 
