386 JUNCACEAE. 
11, Juncus ténuis Willd. Slender Rush. Yard Rush. (Fig. 929.) 
Juncus tenuis Willd. Sp. Pl. 2: 214. 1799. 
Tufted, 8’-30’ high; basal leaves with blades 4 ’/— 
3(/’ wide, sometimes involute in drying, about half 
the height of the stem; stem leaves none; inflorescence 
usually much exceeded by its lowest leaf, 4’ high or 
less, the flowers rarely secund; perianth 13¢’/-214’/ 
long, its parts lanceolate, acuminate, exceeding the 
capsule, widely divergent, touching the capsule for 
about half their length; stamens 6, about half as long 
as the perianth; anthers shorter than the filaments; 
capsule oblong to obovoid, rounded at the top, imper- 
fectly 3-celled; seed }//-4%’’ long, narrowly oblong 
to obovoid, with oblique ends, reticulated in about 16 
rows, the areolae two or three times broader than long. 
In dry or moist soil, especially on paths, almost through- 
out North America, now migrating to all parts of the world. 
Variable. 
12. Juncus secundus Beauv. Secund Rush. (Fig. 930.) . 
Juncus secundus Beauy.; Poir. Encycl. Sup. 3: 160. _ 1813. 
Juncus tenuis var. secundus Engelm. Trans. St. Louis 
Acad. 2: 450. 1866. 
Tufted, 6’-16’ high; leaves usually less than one- 
third the height of the plant; inflorescence longer 
than its lowest leaf or only slightly exceeded by it, 
10’’-4’ high, the flowers secund on the usually some- 
what incurved branches; perianth-parts 114 //-134// 
long, equalling or barely exceeding the capsule and 
appressed to it for about two-thirds their length, often 
reddish above; stamens 6, about one-half as long as 
the perianth; capsule narrowly ovoid, 3-sided above 
the middle with straight sides and a truncate apex, 
completely 3-celled, the placentae meeting in the axis; 
seed }//-!/’ long, narrowly oblong to ovoid, obliquely 
tipped, with 12-16 longitudinal rows of areolae two or 
three times broader than long. 
In dry soil, New Jersey and Pennsylvania to North Caro- 
lina. Occasional in the middle Mississippi Valley. 
13. Juncus Vaseyi Engelm. Vasey’s Rush. (Fig. 931.) 
Juncus Vaseyi Engelm. Trans. St. Louis Acad. 2: 448. 
1866. 
Stems erect, tufted, 1°-2%° high, 3/’’ in diameter 
or less; basal leaves with minutely auriculate sheaths, 
the uppermost bearing a terete channeled blade half 
to three-fourths as long as the stem; stem leaves none; 
inflorescence 124’ in height or less, 4-40-flowered, the 
lowest bract usually not exceeding the inflorescence; 
perianth 114//-2’ long, the parts subulate-lanceolate, 
with hyaline margins, the inner slightly shorter; 
stamens 6, about two-thirds as long as the perianth; 
anthers shorter than the filaments; style almost want- 
ing; stigmas short; capsule slightly exceeding the 
perianth, narrowly oblong, obtuse or truncate, with a 
short tip, 3-celled; seed long-tailed, with a linear-ob- 
long oblique body about 4%’’ long, 20-24-ribbed, the 
intervening spaces with faint transverse markings. 
Maine and Ontario to Michigan, Illinois and Iowa. 
