Ji-xcus.] JUNCEJZ. 389 



much longer than the filaments. DISTKIB. Shores of the Baltic and Scan- 

 dinavia to the Arctic circle, N. America. 



4. J. filifor'mis, L. ; stems wiry pale green filiform, pith interrupted, 

 cyme midway up the stem small, perianth-segments lanceolate exceeding 

 the turbinate obtuse mucronate capsule, stamens 6. 



Stony and gravelly margins of lakes in the N. of England and Kincardine ; 

 absent from Ireland ; fl. July- Aug. Rootstock loosely tufted. Stems 4-8 in., 

 very slender, faintly striate. Sheaths often with subulate tips. Cyme sessile ; 

 flowers few, crowded, very pale. Anthers shorter than the filaments. 

 Seeds very minute. DISTRIB. Europe (Arctic), N. Asia, N. America. 



** Leaves all reduced to sheaths, or a, few elongate and stem-like. Cymes lateral, 

 flowers clustered. Stamen 6. Testa produced at each end. 



5. J. acutus, L. ; stem rigid ptingent, sheaths long shining, perianth- 

 segments ovate-lanceolate, inner obtuse with a broad scarious margin half 

 as long as the broadly ovoid mucronate capsule. 



Sandy sea-shores from Norfolk and Carnarvon southwards, rare ; S. and S.E. 

 of Ireland ; fl. July-Aug. Tufts circular. Stems 2-4 ft., stout, terete, 

 hardly striate, many flowerless. Cyme corymbose, dense -flowered, very 

 large in fruit ; bracts lanceolate-subulate, exceeding the flowers ; flowers 

 J- in. Perianth brown, inner segments retuse winged towards the tip. 

 Capsule nearly | in., turgid, hardly 3-gonous. DISTRIB. Shores of Europe 

 from France southwards, N. Africa. 



6. J. maritimus, Sm. ; stem wiry pungent, sheaths short pale, 

 perianth-segments lanceolate all acute and without scarious margins 

 equalling the elliptic-oblong acuminate capsule. 



Salt marshes from Isla and Nairn southwards ; rare in Scotland ; common in 

 Ireland ; fl. July-Aug. Habit of J. acu'tus, but irregularly tufted ; stems 

 less rigid and usually more slender ; cyme more interrupted, branches long 

 erect ; bracts not exceeding the very pale flowers. DISTRIB. Europe from 

 Gothland southwards, N. Africa, W. Siberia, N. America. 

 *** Leaves all terete compressed or channelled. Cymes terminal or lateral, 

 1-3 (rarely &-) flowered. Testa produced at each end. 



7. J. triglu'mis, L. ; stems terete, leaves radical subulate channelled, 

 flowers usually 3 terminal equalling the membranous bract, perianth- 

 segments obtuse much shorter than the ellipsoid beaked capsule. 



Alpine bogs, from Carnarvon and Durham northwards, ascending to 3,000ft. 

 in the Highlands ; absent from Ireland ; fl. July-Aug. Tufted, black ; 

 stolons 0. Stems 6-18 in., slender, wiry. Leaves very short, formed of 

 2 septate tubes, sheaths auricled. Flowers erect, J-^in., pale, red-brown in 

 fruit. DISTRIB. Arctic and Alpine Europe, N. Asia, Himalaya, N. America. 



8. J. biglu'xnis, L. ; stems ^-terete, leaves radical subulate com- 

 pressed, flowers usually 2 shorter than the bract, perianth-segments 

 obtuse nearly equalling the turbinate retuse 3-lobed capsule. 



Bogs on the Alps of Perth and Aberdeen, at 2, 000-3,300 ft. ; fl. July-Aug. 

 Not tufted, stoloniferous. Stem 2-6 in. Leaves shorter, septate within, 

 sheaths not auricled. Flowers g in., upper pedicelled, lower sessile, chesnut- 

 brown. Capsule mucronate between the lobes. DISTRIB. Alpine and Arctic 

 N. Europe, Asia, Himalaya, and N. America. 



