390 JUNCEJE. [JuNt-rs. 



9. J. castaneus, L. ; stems terete leafy, leaves ^-terete fistular. cynic* 

 1-3 lateral and terminal 2-6-flowered, perianth-segments acute half as long 

 as the elliptic-oblong beaked capsule. 



Alpine bogs, very rare; Argyle, Perth, Forfar, Aberdeen, alt. 2,500- 

 3,000 ft. ; fl. July- Aug. Not tufted, stoloniferous. Stew 6-16 in. Leaves 

 2-3, variable in length, channelled above, sheaths not auricled, walls thin. 

 Flowers |- in., bright brown. Capsule nearly Jin., 3-gonous. Seeds large 

 for the genus. DISTRIB. Arctic and Alpine, N. and Mid. Europe and 

 N. America, Siberia, Dahuria, Himalaya. 



10. J. trifldus, L. ; stems wiry terete, leaves subulate short mostly 

 reduced to sheaths, flowers 1-3 between 2 filiform bracts, perianth-segments 

 acuminate shorter than the ovoid beaked capsule. 



Alpine rocks, from Dumbarton, Perth, and Forfar northwards ; alt. 1,200- 

 3,000ft. ; fl. July-Aug. Forms dense matted rigid masses of rootstocks 

 and sheaths. Stems 3-10 in. Upper leaf-sheath with one short subulate 

 leaf; another leaf occurs on the stem beneath the inflorescence, with a 

 tubular sheath, which has often scarious edges. Bracts 2-4 in., filiform. 



Flowers in., pale brown ; perianth-segments very narrow, margins pale. 

 Style and stigmas long. Seeds large, appendages short. DISTKIB. 

 and Alpine Mid. Europe and N. America, Siberia, W. Asia to Persia. 



**** Leaves chiefly radical, flat or grooved above. Cymes terminal, B-many- 

 flowered. Testa not produced at either end. 



11. J. squarro'sus, L. ; rigid, stem compressed, leaves subulate 4- 

 terete below channelled above, cymes terminal branched, clusters 2-3- 

 ttowered, perianth-segments oblong obtuse equalling the obtuse mucro- 

 nate capsule. 



Moorlands, ascending to 3,200 ft. in the Highlands ; fl. June-July. Stem* 

 densely tufted, 4-10 in., stout, solid, naked or with 1-2 leaves. Leaven 

 2-7 in., most densely crowded, gradually recurved from the broad keeled 

 sheath, striate. Cyme irregularly corymbose, branches erect ; bracts broad, 

 scarious, shorter than the flowers. Flowers in., pale. Capsule obtusely 

 8-gonous. DISTRIB. Europe, Siberia, Greenland. 



12. J. compres'sus, Jacq. ; slender, stem 1-2-leaved subcom- 

 pressed, leaves slender 4-terete channelled above, cyme terminal branched, 

 flowers subsolitary, perianth-segments oblong obtuse equalling or shorter 

 than the ovoid obtuse mucronate capsule. J. bulbosus, L. (name given 

 by error). 



Marshy places; fl. June-July. Rootxtock creeping. Stems 6-24 in., tufted. 

 very slender, hollow. Leaees narrow, flaccid, suberect, equalling the stem 

 or shorter. Cyme irregularly corymbose ; branches suberect, slender, few- 

 flowered ; bracts small. Floivers A-J in.; perianth -segments pale in the 

 middle, with broad scarious pale or dark brown or purple margins. DISTRIB. 

 Europe, Siberia, Dahuria, W. Asia to Persia, N. America. 



Sub-sp. COMPUES'SUS proper ; stems tufted, capsule broader almost obovoid 

 shortly mucronate much longer than the perianth. Rather rare. 



Hub-sp. GKRAR'DI, Loisel. (sp. ) ; stems more remote, capsule narrower strongly 

 mucronate not exceeding the perianth. J. bottnicus, Wahl. ; J. caniosii*. 

 Bich. Salt marshes. Also in N. U. States. 



