174 HEXANDRIA— MONOGYNIA, Jimcus. 



J. castaneus. Fl. JBr.383. Engl. Bot. v. 13. t. 900. Bicheno Tr.of 



L. Soc.v. 12. 321. Hook. Scot. 106. FL Dan. t. 1332. 

 J, Jacquini. Sym. Syn. 87. Hull76. 



In the Highlands of Scotland, on a micaceous soil ; as also in the 

 North of England. 



First found on Ben Challum, bv the Rev. Dr. Stuart. Bicheno. On 

 Ben Lawers. Mr. Mackay. In Fion glen, behind Craig Cal- 

 liach, Breadalbane. Mr. Borrer. In the county of Durham. Rev. 

 Mr. Harriman. 



Perennial. July. 



Root creeping, with lax runners. Stems solitarj', erect, from 8 to 

 12 inches high, round, smooth ; leafy at the base, as well as 

 towards the middle. Leaves principally on the stem, erect, from 

 2 to 4 inches long, smooth, keeled, flat at the sides, involute 

 when dry ; cellular internally, with distant transverse partitions, 

 but not really knotty or jointed ; convolute and sheathing at the 

 base. Heads terminal, usually 2, one above the other, rarely 

 solitary, each on a short thick stalk, within the sheathing base 

 of its upright leafy hraciea. Interior hracteas membranous, lan- 

 ceolate, much the shortest. Fl. from 3 to 8 in each head, erect. 

 Calyx-leaves elliptic-oblong, 3-ribbeJ, dark chocolate-coloured j 

 the 3 innermost pale and membranous at the extremity. Filam. 

 not quite so long, with linear, yellow, finally twisted, anthers. 

 Style stout, breaking oft at a joint, above the base. Stig7nas 3, 

 brown, acute, downy, flat, at length spirally convoluted. Caps. 

 elliptic-oblong, dark brown, triangular, twice the length of the 

 calyx, rounded and pointed at the summit. Seeds oval, small, 

 each enveloped in a pale tunic, greatly elongated, and pointed, 

 at both ends. 



The figure in Engl. Bot. is very correct, except wanting the ripe 

 fruit ; having no resemblance in root, stem, leaves oxjlowers to 

 J. Jacquini. 



20. J. acutijiorus. Sharp-flowered Jointed Rush. 



Leaves apparently jointed, slightly compressed. Panicle 

 repeatedly compound, forked. Calyx-leaves all bristle- 

 pointed, shorter than the taper beak of the capsule. 



J. acutiflorus. Ehrh. Calam. 66. Davies Tr. ofL.Soc. v. 10. 13. 



Camp. 55. Engl. Bot. v. 30. p. 2143, at the bottom. Bicheno Tr. 



of L. Soc. V. 12.323. Hook. Scot. 109. 

 J. sylvaticus. fVilld. Sp. PL t;. 2. 21 1. 

 J. articulatus. EngL Bot. v. 4. t. 238. Relh. 143. 

 J. articulatus /3. R. Brit. 379. 

 J. nemorosus. Sibth. 1 1 4. 

 J. nemorosus, folio articuloso. Raii Syn. 433. 

 Gramen junceum, folio articulato, sylvaticum. Bauh. Pin. 5. 



Theatr. 75. f. 76. Scheuchz. Agr.ZM. 



