JONCUS. CLV1. JUNG ACE jE. 559 



2. H. DIOICA. Ph. (Veratnim luteum. Linn.} Unicorn Root. 



St. leafy ; Ivs. lanceolate, radical ones oblanceolate ; rac. spiked, nodding, 

 dioecious ; ped. short, without bracts ; sta. exserted ; segments linear. In low 

 grounds, Can. to Ga. and La. Root premorse. Stem or scape 12 30' high, 

 furrowed. Radical leaves 4 8' by i 1', in a sort of whorl at the base of the 

 scape. Flowers small, very numerous, greenish- white, in long, terminal, spi- 

 cate racemes which are more slender and weak on the barren plants. Ovaries 

 as long as the linear petals, subtriangular. Capsule 3-furrowed, oblong, taper- 

 ing to the base, opening at the top. The fertile plants are taller, more erect, 

 but with fewer flowers. June. 



7. TOFIELDIA. Hudson. 



In honor of Mr. Tofield, a Scotch gentleman, residing near Doncaster. 



Flowers $ , calyculate, with 3 remotish, united bracts ; Ifts. of the 

 perianth petaloid, spreading, sessile and without bracts ; sta. 6 ; anth. 

 roundish-cordate, introrse ; ovaries 3, united ; styles distinct, short ; 

 caps. 3-lobed, 3-partible ; capsule 00-seeded. Lvs. equitant, subradi- 

 caL Scape not bulbous. Fls. spicate or racemose. 



T. GLUTINOSA. Nutt. 



St. leafy below, glandular-scabrous, simple : Ivs. shorter than the stem, 

 linear-ensiform, glabrous, obtuse ; rac. oblong, few-flowered, close, composed 

 of 3-flowered, alternate fascicles ; caps, longer than the perianth. Woods, Ohio, 

 SMivant ! to Wis. Lapham ! N. to Arctic Am. A plant remarkable for its 

 glutinous-glandular stem. Stem slender, scape-like, 1 lf high, dotted with 

 its dark-colored glands. Leaves 3 6' by 3 6", conduplicate. Spicate raceme 

 1 1 ' long, 9 18-flowered. Pedicels nearly as long as the flowers. Involucre 

 truncate, 3-toothed, a little below the perianth. Petals and sepals subequal, ob- 

 lanceolate, less than 2" long. Capsule of 3, half-united, inflated carpels, twice 

 longer than the perianth. 



ORDER CLVI. JUNCACEJE. RUSHES. 



Plants herbaceous, generally grass-like, often leafless, with small, dry, green flowers. 

 Lvs. fistular, or flat and channeled, with veins parallel. Inflorescence cymose, capitate or fascicled. 

 Perianth more or less glume-like, regular. 6-leaved, in 2 series (sepals and petals) 

 Sta. 6, rarely 3, hypogynous. Anth. 2-celled. 



Ova. 3-carpeled, 3 (or by the dissepiments not reaching the centre l)-celled. 

 Styles united into 1. Stiginas 3. 



FV. Capsule 3-valved, with the dissepiments from the middle 01 the valves. 

 Seeds few or many, with a fleshy aibumen. 



Genera 13, species 200, chiefly natives of the cool parts of the earth. Properties unimportant 

 Conspectus of the Genera. 



$ Capsule mostly 3-celled. Seeds numerous Juncus. 1 



( green. \ Capsule l-celled. Seeds 3, fixed to the bottom of cell . . . Luzula. 9 

 Perianth colored, yellow Narthecium. 3 



1. JUNCUS. 



Lat. jungo, to join ; because ropes were anciently made of these plants. 



Perianth persistent ; stamens 6 ; capsule mostly 3-celled ; seeds 

 numerous, attached to the inner edge of the dissepiments. 

 * Leaves none. Cymes apparently lateral. 



1. J. BALTICUS. Willd. Baltic Rush. 



Rhizoma creeping, prostrate, rooting ; scapes numerous, sheathed at base, 

 opaque, terete, rigid, slender, pungently acute ; panicle small, short, lateral ; 

 perianth segments subequal, ovate-lanceolate, very acute, equaling the elliptical, 

 mucronate capsule. Sandy shores, Milwaukie, Wis., Lapham! N. to the 

 Saskatchawan and Labrador. Scape leafless, 12 18' high, hard, tough, closely 

 arranged along the scaly rootstock, the sheaths 3" 3' long. Panicle 2 3' be- 

 low the apex of the scape, 1' long. Flowers 20 10, reddish-brown. 



2. J. ACUTUS. 



Csespitose ; scapes numerous, tall, rigid, terete, sheathed at base ; panicle 



