170 HEXANDRIA— MONOGYNIA. Juncus. 



Dersingham moor, Norfolk j and always considered it as the true 

 Linnsean J. bulbosus ; a name which it ought still perhaps to 

 have retained, but which having been long otherwise misapplied^ 

 is best laid aside altogether. See J. compressus and coenosus. 



15. J. subverticillatus . Whorl-headed Rush. 



Stem leafy, trailing. Leaves bristle- shaped, channelled, 

 very slightly jointed. Panicle forked. Heads lateral and 

 terminal, about five-flowered, somewhat whorled. Cap- 

 sule obtuse, rather longer than the calyx. 



J. subverticillatus. Wulf. in Jacq. Coll. v.',^.5l. Willd. Sp.Pl. 

 V. 2. 212, excluding nearly all the sijnonyms. Bicheno Tr. of L. 

 Soc. V. 12. 322. Hook. Scot. 109. Host Gram. Aiistr. v. 3. 58. ^88. 



J. setifolius. Ehrh. Calam. 86. 



J. uliginosus y. Bicheno Tr. of L. Soc. v. 12. 316 ? 



J. bulbosi varietas, maxim^ repens et vivipara. Fl. Dan.fasc. 14.6. 

 ^.817 ; excluding the synonyms. 



In boggy and watery places frequent. 



Perennial. July, August. 



Root of many long fibres, not creeping. Stems several, crowded, 

 scarcely bulbous at the base ; either decumbent or floating, 

 sending forth radicles, as well as tufts of leaves, occasionally 

 from the joints, round, slender, smooth, from 6 inches to a foot 

 or more in length, filled with pith. Leaves very slender, taper- 

 pointed ; semicylindrical beneath ; channelled above ; cellular, 

 often furnished with internal transverse partitions, but these 

 rarely cause any swelling, or apparent joint, externally ; the 

 base is dilated and striated, with a broad, abrupt, often reddish, 

 membranous margin ; the radical ones are numerous, erect, 2 

 or 3 inches long 3 those on the stem solitary, and somewhat 

 longer. Panicles terminal, once or twice forked. Heads of 

 Jlowers axillary, lateral, and terminal^, nearly sessile, often ac- 

 companied by solitary, short, leafy hracteas, and subtended by 

 a few very white membranous scales. FL from 3 to 5 in each 

 head, rather spreading as if whorled j in floating specimens 

 fewer, with a less compound panicle. Cal. and Caps, dift^ering 

 but little from the larst, except being generally of a paler hue. 



Willdenow's synonyms chiefly belong to J. uliginosus. His variety 

 /3 is the /3 of our uliginosus. 



16. J. capita tus. Dense -headed Rush. 



Stem erect, unbranched ; leafy at the base. Leaves bristle- 

 shaped, channelled. Heads one or two, lateral and ter- 

 minal. Stamens three. Calyx keeled, bristle=pointed, 

 twice as long as the capsule. 



