500 JUNCDS. CCIASS VI. ORDER I. 



striated. Inflorescence a terminal head of two flowers, having at the 

 base two ovate-lanceolate concave bractea, the outer one longest, mostly 

 overtopping the flowers, the keel at the back lengthened into a point, the 

 sides thin, striated, dilated, shining brown, membranous, and with two 

 or three slender ribs on each side of the keel, one floiver sessile, the 

 other elevated on a pedicle, and little above the other, perianth of six 

 elliptic obtuse nearly equal pieces, smooth and membranous, pale on 

 the margins, and more or less distinctly keeled at the back. Stamens 

 on slender fllaments, longer than the perianth. Anthers small, yellow, 

 elliptic. Style short, thick, furrowed. Stigmas spreading. Capsule 

 elliptic, obtuse, longer than the perianth, pointed with the persistent 

 base of the style, three angled, three valved, of a dark shining brown, 

 the margins almost black. Seeds numerous, small, ovate, enveloped in 

 a pale thin membranous envelope, elongated at each end. 



Habitat. — Boggy places on the highlands of Scotland; not unfre- 

 quent on the Breadalbane range, but rare elsewhere. 



Perennial ; flowering in July and August. 



10. J. triglu'mis, Linn. (Fig. 569.) Three-floivered Rush. Stem 

 erect, simple, slender ; leaves radical, linear, subulate, channeled, the 

 base dilated into sheaths, auriculated above ; heads mostly of three 

 flowers, as long as the membranous bractea ; segments of the perianth 

 oblong, acute, shorter than the elliptic acute capsule. 



English Botany, t. 899.^English Flora, vol. ii. p. 173.— Hooker, 

 British Flora, vol. i. p. 168.— Lindley, Synopsis, p. 275. 



Roots of numerous long slender branched fibres, bearing tufts of 

 stems and leaves. Stem erect, slender, from three to six inches high, 

 round, smooth, striated in the lower part, at least in the dried plant, 

 and enveloped at the base with the sheaths of two or three leases, but 

 all the others are radical, as are these, but from closely investing the 

 stem appear to arise from it. Leaves slender, almost bristle-shaped, 

 erect, about half as long as the stem, quite smooth, channeled above, 

 obtusely pointed, and dilated at the base into thin brown membranous 

 sheaths, auriculated at the top. Inflorescence a terminal head, of from 

 one to three flowers, rarely four, " all sessile, enveloped in two mem- 

 branous bractea, shorter than the flowers, ovate-acute, concave, the 

 outer one largest, three ribbed, which unite at the top, and are elongated 

 into a short point, the inner one with a slender mid-rib, rarely any 

 lateral ones. Perianth of six elliptic lanceolate acute pointed keeled 

 membranous, brown smooth shining pieces, of an equal length. Sta- 

 mens on slender filaments, longer than the perianth. Anthers yellow, 

 elliptic, twisted. Style short, stout, scarcely furrowed. Stigmas short, 

 spreading. Capsule longer than the perianth, elliptic, acutely pointed, 

 obtusely angular, and indistinctly furrowed, of a deep chestnut brown, 

 three valved, three celled, and many seeded, the seeds enveloped in a 

 pale thin loose membrane, elongated at each extremity. 



Habitat. — Boggy places, on the mountains in the North of England, 

 Wales, and especially the highlands of Scotland. 



