JUNCACE^E. 



879 



15. Two-flowered Rush. Juncus biglumis, Linn. 



(Fig. 10G0.) 



(Eng. Bot. t. 898, and J. triglumis, t. 899.) 



Leaves radical, sheathing the base of 

 the stem, short and grass-like. Stems 

 tufted, 6 to 8 inches high, each with a 

 single terminal cluster of 2, 3, or rarely 

 5 or 6 rather large, brown flowers ; the 

 outer bract seldom longer than the 

 flowers. Perianth - segments obtuse, 

 scarious on the edges, 1^ to 2 lines long. 

 Capsule as long or longer, more or less 

 obtuse. 



In mountain bogs, in northern and 

 Arctic Europe, Asia, and America, and 

 at great elevations in the mountain- 

 ranges of central Europe. In Britain, 

 not unfrequent in the Scotch Highlands, 

 extending into northern England and 

 North Wales. Fl. summer. Two forms 

 of this plant have been distinguished as 



species, the tivo-flowered variety (J. biglumis), chiefly Arctic, usually 

 with only 2 flowers, a small leafy tip to the outer bract, and a short, 

 very obtuse capsule ; and the more common three-flowered variety 

 {J. triglumis), with 3 or more flowers, no leafy tip to the bract, and 

 a longer, less obtuse capsule ; but each of these characters will be found 

 to vary occasionally in the same tuft, and not always to correspond 

 with each other. Both varieties occur in Scotland. 



Fig. 1060. 



II. WOODEUSH. LTJZULA. 



Perennial herbs, differing from 'Rush in their softer, flatter, grass- 

 like leaves, often fringed with a few long, white hairs, and especially 

 in their capsules not divided into cells, and containing no more than 3 

 much larger erect seeds. 



A genus widely distributed over the northern hemisphere, usually 

 in woods, meadows, and pastures, in drier situations than the Rushes. 



Flowers panicled. 



Flowers single on each pedicel 



Flowers in clusters of 2, 3, or 4 on each pedicel. 



1. Hairy W. 



