JUNCACEiE. 2 ( 



tliiin that of J. glaucus, witli which, notwithstanding Wahleuberg'd 

 opinion, it has but little affinity. 



Northern Ra.h. 

 Frericli, Jonc arctique. German, BaltLiche Binse. 



SPECIES XL— J U N C U S PILIPORMIS. Linn. 



Plate MDLXV. 



Reich. Ic. Fl. Germ, et Helv. Vol. IX. Tab. CCCCXII. Fig. 919. 

 Eilloi, Fl. Gall, et Germ. Exsicc. No. 672. 



Subcajspitose. Rootstock extensively creeping, its branches with 

 the stems placed about their own breadth apart one before the other. 

 Stems rather few, wirj-, tough, very slender, terete, smooth when 

 fresh, finely striate when dry, green, filled with greatly interrupted 

 2iith. Sheaths leafless, or some of them terminated by a very short 

 setaceous lamina, striate, yellowish-brown, not shining. Panicle pseudo- 

 lateral, from the lowest bract resembling a continuation of the stem, 

 and being commonly about as long as the stem. Flowers few, 

 solitary, arranged in a nearly simple corymbose panicle, with the lower 

 branches erect, very short, simple, or very rarely once branched, 

 generally so short that the flowers are in a head. Perianth leaves 

 pale olive-brown, slightly unequal, the three inner ones shorter, all 

 lanceolate, acute, as long as or a little longer than the capsule. 

 Stamens 6. Capsule rOundish-turbinate, very obtuse, mucronate, pale 

 brown. Seeds very minute, without an appendage. 



On the gravelly shores of lakes. Very local. On the shores of 

 Windermere, Westmoreland; and Thirlmere, Crummock Lake, and 

 Derwentwater, Cumberland. In Scotland it is known to occur only 

 on the margin of Loirston Loch, Kincardiiicsliire, three miles soutli 

 of Aberdeen. 



England, Scotland. Perennial. Late Summer. 



Rootstock extensively creeping, somewhat wood}^ thick for the size 

 of the plant. Stems very slender, 2 to 9 inches high, with the lowest 

 bract about as long, so that the ilowers appear to be about the middle 

 of the stem ; pith reduced to filmy dissepiments much more than 

 their own width apart. Perianth leaves ^ inch long, pale greenish- 

 olive, with rather short lanceolate bracts at the base of the same 

 colour. Seeds very minute, yellowish-brown. 



I am indebted to Mr. A. G. ^lore for fresh specimens of this species 

 from Kincardineshire. 



Thread Rush. 

 Frcncli, -Jouc Jiliforme. German, Fadf.uformifjc Bhtse. 



