JuNcus. HEXANDRIA. MONOGYNIA, 36t 



le nb erg, in his Catalogue, though it is not described in his 

 Descriptio Graminum. 



5. J. tenuis Willd. : stem erect, filiform, a little dicho= 

 tomous at the summit, nearly terete ; leaves setaceous, cana- 

 liculate ; flowers solitary, approximate, subsessile ; perianth 

 longer than the obtuse capsule. Willd. Spec. II. p. 214. 

 Rostk. June. 24. t. 1 . f. 3. Hook. Fl. Scot, part I. p. 

 108. Pursk Fl. I. p. 238. M u h I. Gram. p. 200. B i go 

 Bost. p. 84. Elliott Sk. I. p. 40G. J. bicornis M i c h» 

 F/.I.p.236. Rostk. Jwic. 2\.t. l.{. 1. PurshFl. 

 1. p. 236. J. gracilis En^. Bot. t. 2 1 74. Bic h. in Lin. 

 Trans. XII. p. 21 3. fide H o o A; e r. 



Jioot fibrous, cespitose. Stem a foot high, slightly compressed, 

 tenacious, generally naked. Leaves linear-setaceous, a little 

 rounded on the back. Pcnfr/e terminal, subcorymbed; branches 

 unequal, often proliferous, 2 — 5-flowered ; powers erect, se- 

 cund, sessile. Involucrum of 2 — 3 setaceous leaves, much 

 longer than the panicle. Leaflets of the /iena72?/i lanceolate, 

 acuminate, nearly one-third longer than the capsule. Stamen* 

 6; anthers pale yellow. Cafisule subtriangular, globose. 

 Seeds very numerous and minute, oblong, gibbous, striate, 

 brown, 



Hab. In low grounds and on road sides ; sometimes in very dry 

 places ; very common. June — July. 



This species, when it grows luxuriantly, produces com- 

 pound panicles, with the branches bearing from three to five 

 flowers in a racemose manner. It then appears to be the J. 

 gracilis o{ Eng. Bot. t. 2174, and exactly resembles specimens 

 sent to me under this name from England, by Mr. A. H. 

 Haw orth. 



6. J. nodosus L. : stem somewhat leafy ; leaves nodose- 

 articulate ; heads mostly 2, globose, one of them lateral and 

 pedunculate, the other sessile ; leaflets of the perianth mu- 

 cronate, shorter than the acuminate capsule. Rostk. June. 

 29. t. 2. f. 2. Will d. Spec. II. p. 210. Pursh Fl. I. p. 

 236. M w A /. Gram. p. 206. Gron. Firg, 15. P luk, 

 Aim. 1 79. t. 92. f. 9. 



Root bulbous. Ste7n 8 — 10 inches high, filiform, nearly terete. 

 Leaves few, slender, terete, often longer than the stem, di- 

 vided by transverse partitions, which, especially in a dry state, 

 give them a jointed appearance. Heads often solitary, but ge- 

 nerally 2, globose, 8 — 12-flowered: one of them sessile, the 

 other on a peduncle nearly an inch long. Involucrum a single 

 filiform leaf, much longer than the lieads. Bracts at the base 

 of the perianth, ovate, acute. Leaflets o{ X\\q perianth linear- 

 lanceolate, with a mucronate or subaristate tip. Stamens 6 j 

 anthers yellow. Capsule triquetrous. 



Hab. In swamps and boggy grounds. July. 

 46 



