14G HEXANDRIA — MONOGYNIA. [Juncus. 



divaricated, clusters 3 — 6-flow'ered, leaflets of the perianth equal 

 rather obtuse about equal in length with the oval trigonous 

 capsule. E. Bot. t. 2144. 



• Wet pastures and marshes, not unfrequent. Fl. Aug. If . — Distinct 

 as this s])ucies assuredly is, it has very iiequently been coni'uunded with 

 the preceding ones of this division. 



11. J. tdiginosus, Sibth. (^lesser Bog jointed Rush) ; stem 

 erect and often swollen at the base or decumbent and rooting, 

 leaves bristle-shaped, panicle nearly simple irregular, clusters 

 few or many-flowered, leaflets of the perianth equal oblong 

 subacute nearly as long as the elliptical capsule. E. Bot. ^.801. — 

 J. bulbosus, L. — J. subverticillatus, Wulf. — Host, Gram. Austr. 

 V. iii. t. 88. 



Bog-gy and swampy place?, and often parll}^ floating' in shallow water. 

 Fl. Aug. If. — This is indeed an extremely variable plant, depending 

 much for its appearance on soil and situation. In rather dry places it 

 often rises erect, 3 — 4 inches high, having a bulbous or sviollen base, 

 and is then the original J. bulbosus, L. At other times the stems are 

 spreading or procumbent, when it becomes the J. subverticillatus of 

 Wulfen. Again, these procumbent stems often take root at intervals, 

 and are proliferous ; or, when growing iu water, they fioat ui)on the 

 surface and spread their long flaccid branches in all directions. The ra- 

 mifications and panicles are exceedingly irregular ; the latter few- 

 flowered. It is often extremely difficult to distinguish this from small 

 varieties of Jl larripocarpus. 



**** Stems leafy. Leaves plane or grooved above ; not dis- 

 iinctly jo in ted. 



12. J. castdnetfs, Sm. (clustered alpine Rush); stem rounded, 

 leaves hollow grooved above rounded at the back, heads of 

 flowers generally single sessile or peduncled shorter than the 

 bractea, capsules ovate bluntly trigonal nearly twice as long as 

 the perianth. E. Bot. t. 90. 



Rare, on the elevated mountains of Breadalbane. Rocks at the head 

 of Glen Callader, in Braemar. Dr Graham. In the county of Dut" 

 ham. Fl. July. If. — "■ Jioot slightly creeping, with short runners or 

 lateral shoots. Stein hollow. Leaves with the channelled side very 

 thin and membranaceous ; and within are found distant transverse par- 

 titions. Upper part of the leaf rounded and compressed. Leajiets of 

 the perianth elli|)tic-lanceolate, acute and 3-ribbed. Style breaking off 

 at a joint. Capsule shining, and as well as the perianth and inner 

 bractea of a deep chocolate colour." W. Wilson. 



13. J. trijidus, L. {three-leaved Rush); sheaths fringed those 

 at the base of the stem leafless, bracteas resembling the seta- 

 ceous solitary stem-leaf, heads of about three terminal flowers. 

 E. Bot. t. 1482. 



Rocky places, on the Higliland mountains of Scotland. Fl. July, 

 Aug. If . — Very unlike any other British Juncus. Root creeping. 

 Lower sheaths with at most a short awn, scarcely to be t ernieda leaf. 

 A solitary leaf is on the stem, generally near the summit, 2 — 3 inches 

 long, linear-setaceous. Bracteas 2 under each head of I — 3 flowers. 



