120 J UNCACEAE 
B. Clusters of flowers terminal on the scape. 
Flowers separate, not in heads. 
9. J. bufonius,L. (Fig. 6, pl. 10.) Toap Rusu. Stem branching, 
tufted, 3 to 8 in. high. Leaves from root and stem, the latter 1 to 2 
in. long. Flowers terminal in forked clusters. Final clusters of 2 or 3 
flowers. Parts of the perianth lance-shaped, sharp, the petals much 
longer than the sepals, not equal among themselves. Common. 
10. J. tenuis, Willd. (Fig. 10, pl. 10.) St tenner Rusu. Stems not 
branched, wiry, 8 to 30 in. high. Leaves flat, thread-like, 3 the height 
of stem. Flowers in a diffuse fan-shaped cluster, not in heads, sub- 
tended by a bract much longer than the cluster. Parts of the perianth 
green, spreading; pod globular. Common. 
1l. J. secundus, Beaur. Srcunp RusH. Growing in tufts. Stem 6 
to 16 in. high. Flowers in a one-sided cluster. Capsule oblong, 3-sided, 
equaled by the perianth. Leaf at base of cluster about as long as the 
cluster. Dry soil. 
12. J. Dudleyi, Weigand. Dupiry’s Rusu. Stems 12 to 40 in. high. 
Leaves basal, about one-half the length of the scape, narrowly linear, flat. 
Inflorescence 1 to 2 in. high, the subtending leaf or bract exceeding it in 
length. Cluster few flowered. Capsule ovoid, shorter than the perianth. 
Me., Washington, Conn. 
13. J. dichotomus, Ell. Forkep Rusu. Stems not branched, wiry, 
1 to 3 ft. high. Leaves thread-like, rownd, channeled on one side, ex- 
tending from Jong sheaths. Flowers in a forked cluster, each flower 
separate. Pod round, as Jong as the sepals. This and the preceding 
species closely resembling each other. Common in dry soil. 
14. J. Gerardi, Lois. (Fig. 2, pl. 10.) Brack Grass. Stems 8 to 
30 in. high, from creeping rootstocks. Basal leaves sheathing then spread- 
ing, flat, narrow; stem leaves thread-like. Flowers in a forked cluster, 
not in heads, each subordinate cluster subtended by a long bract. Pod as 
long as the sepals, black; parts of the perianth obtuse. Style conspicuous, 
3-branched at summit. Mostly in salt marshes, 
15. J. Greenei, Oakes & Tuckerm. GRreEENE’S Rusu. Scapes wiry, 
8 to 30 in. high. Leaves slender, round, grooved. Cluster forked; flowers 
separate; bract at base of cluster very slender and several times longer 
than the cluster. Flowers straw colored. Sepals shorter than the pod, 
egg-shaped. Stamens 6. Near the sea coast, Maine, southward. 
16. J. Vaseyi, Engelm. (Fig. 3, pl. 10.) Vasry’s Rusu. Resembles 
No. 12, but sepals are as long as the pod and the bract is usually not 
much longer than the flower cluster. Dry soil, throughout our area. 
C. Clusters of flowers terminal. 
Flowers in heads. Seeds tailed. 
17. J. asper, Engelm. New Jersey Rusu. (J. Caesariensis, Co- 
ville.) Stems rigid, 20 to 40 in. high, stout. Leaves of the stem long, 
rounded, roughened. Cluster 1 to 4 in. high, subordinate clusters (heads), 
2- to 3-flowered; parts of the perianth lance-shaped, sharp pointed, not 
as long as the 3-sided lance-shaped capsule, which at length becomes 
