ORDBB 151. JUNG ACE^. 723 



2 L. parviflora Desv. St elongated ; Ivs. lance-linear, glabrous ; corymb decom- 

 pound; ped. elongated, the branches with 3 to 5 pedicellate fls. ; sep. ovate, acu- 

 minate, longer than the oval-triangular, obtuse-mucronate capsule. White Hills, 

 N. II. (Pro Bosworth), Graylock Mt., Mass. (Chadbourne), etc. Stem 12 to 18' 

 high. Radical Ivs. 8 to 10' by -3 to 5", those of the stem much shorter, all very 

 smooth. Panicle large, nodding, many-flowered. Capsule black. Jn, (L. 

 melanocarpa Desv.) 



3 L. campestris "Willd. FIELD RUSH. Lvs. hairy ; spikes globular or ovate, 

 some on long peduncles, some nearly sessile ; sep. lanceolate, acuminate-awned, 

 longer than the obtuse capsule ; seeds witha conical appendage at base. In mead- 

 ows, U. S. and Can. St. simple, straight, 3 to 12' high. Lvs. grass-like, 2 to 6' 

 long, with tufts of cotton-like hairs. Heads in a sort of umbel, with an involucre 

 of 2 or 3 short, unequal Ivs. Perianth rust-colored, capsule at length brown. 

 May. 



/?. BULBOSA. Bulbous ; Ivs. narrowly linear ; sep. shorter than the globular, dark 

 broicn capsules. Lookout Mt., Tenn. St. 6' high. With the other, but flow- 

 ers earlier. 



4 L. arcuata E. Meyer. Lvs. linear, channeled, glabrous ; heads few, 3 to 5-fiow- 

 ered, on unequal, filiform, often recurved pedicels ; bracts ciliate ; sepals acute, 

 reddish-brown, about equaling the roundish-elliptical capsule ; seeds not appen- 

 daged. White Mts., N. H. (not common) and Arc. Am. 



5 T. spicata DC. Lvs. linear, hairy at the base ; spike cernuous, composed of 

 several sessile globular heads ; sep. acuminate-awned, about equal in length to 

 the subglobous short-pointed, black capsule. White Hills, N. H. (Prof. Bosworth). 

 St. 8 to 10' high, slender, simple. Lvs. 2 to 3' long, a line wide, smooth except 

 at the base. Spike an inch long, appearing greyish black when mature. Seeds 

 oval, with a small, oblique appendage. JL 



3. JUN'CUS, L. RUSH. (Lat. jungo, to join; because ropes were 

 anciently made of these plants.) Perianth 6-sepaled, glume-like, per- 

 sistent ; stamens 6, rarely 3 ; capsule mostly 3-celled ; seeds numerous, 

 attached to the inner edge of the dissepiments. St. simple, leafy or 

 leafless, with terete, flat or channeled Ivs., entire sheaths and small, 

 bibracteate, greenish fls. 



Cyme or panicle lateral, bursting from the side of the scape above the middle, (a^ 



a Leaves none. Flowers separate, mostly hexandrous, greenish .Nos.l 3 



a Leaves few, radical, jointless. Flowers capitate, 6-androus, brownish Nos. 4, 5 



Cyme or panicle terminal on the stem or scape. Leaves present (b) 

 b Flowers capitate, few or many in each head (c) 



C Leaves jointed (nodous) with internal, transverse partitions, (d) 



d Stamens 3. Heads green or pale straw-colored Nos. 6 S 



Heads brown or chestnut colored Nos. 9, 10 



--' d Stamens 6. Heads tawny or brown, 10 to 60-flowered Nos. 11, 12 



2 to 9-flowered Nos. 13, 14 



C Leaves not jointed. Heads many, brown. Sepals obtuse. Stamens 3 No. 15 



Heads few or many, green. Sepals awned No. 16 



Heads mostly but one. Sepals acute. Stamens 6. Nos. 17, 18 

 b Flowers separate, not in heads, mostly secund. Stamens 6. (e) 



e Stems leafy, panicle diffuse, many-flowered Nos. 19, 20 



e Steins naked, except at base, scape-like Nos. 21 23 



1 J. BaltiCTis "Willd. BALTIC RUSH. Rhizome creeping, prostrate, rooting ; scapes 

 numerous, shoathed at base, opaque terete, rigid, slender, pungenily acute; pani- 

 cle near the summit, small ; fls. separate, brown ; sep. subequal, ovate-lanceolate, 

 very acute, equaling the elliptical, mucronate capsule. Sandy shores, Me. to Wis. 

 and Can. Scaps leafless, 1 to 3f high, hard, tough, closely arranged along, the 

 scaly rootstock, the sheaths 3" to 3' long. Panicle 2 to 5' below the apex of the 

 scape, 1' long. Fls. 20 to 40, reddish brown. 



2 J. effusus L. SOFT Rusn. BULL- RUSH. Scape straight, not rigid; panicle 

 lateral, loose, decompound, sometimes dense ; fls. separate ; sep. green, taper- 

 pointed, as long as the obovate, obtuse capsules. Very common in ditches and 

 moist lands, forming tufts, Can. and U. S. Scape solid, with a spongy pith, soft, 

 striate, 2 to 3f high, bearing a loose, spreading panicle which protrudes from a 



