170 HEXANDRIA—MONOGYNIA. Juncus. 



Dersingham moor, Norfolk ; 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 ccenosus. 



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. 3. 5\. Willd. Sp. PL 

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

 L. Soc. V. 1 2. 322. Hook. Scot. 1 09. Host. Gram. Ausir. v. 3. 58. 



t.m. 



J. setifolius, Ehrh. Calam. 86. 



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



J. bulbosi varietas, maxim^ repens et vivipara. Fl. Dan.fasc. 1 4. 6. 

 t. 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 ; 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 bracteas, and subtended by 

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

 head, rather spreading as if whorled ; in floating specimens 

 fewer, with a less compound panicle. Cal. and Caps. diff"ering 

 but little from the last, 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. capitatus. 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. 



