ORDE:: 52. OXAGRACE^E. 35 1 



tube not prolonged beyond tlie ovarv, limb deeply 4-cleft, deciduous; 

 petals 4 ; stamens 8, anthers fixed near the middle ; s;igma often with 

 4 spreading lobes ; ovary and capsule linear, 4-cornered, 4-cclled, 

 4-valved ; seeds oo, conious, with a tuft of long silky hairs. U Fls. 

 violet purple or white. 



Leaves nltcrnate. Fls. showy, expanding. Stamens and sty. declined No. 1 



Leiives opposite. Fls. small, not expanding. Petals entire" Nos. 2, 8 



Petals notched IS os. 46 



1 E. angustifolium L. St. simple, erect; Ivs. scattered, lanceolate, subentiro 

 with a marginal vein ; rac. long, terminal, spicate; petals unguieulate: stam. and 

 sty. declined; stig. witli 4 linear, revolute lobes. In newly cleared lands, low 

 waste grounds, Penn. to Arc. Am. St. 4 to 6f high, often branched above. Lvs. 

 sessile, smooth, 2 to 5' long, J as wide, acuminate, with pellucid veins. Fls. nu- 

 merous and showy, all the purts colored ; petals deep lilac-purple ; ova. and sep. 

 (5 to 6' long) pale glaucous purple. Jl., Aug. 



/9. CAXESCEXS. Fls. of a pure white in all their parts; ovaries silvery canes- 

 cent. Danville, Yt. (MissTowle.) 



2 E. alpinum L. St. creeping at base, usually with 2 pubescent lines, few-flow- 

 ered ; Ivs. glabrous, opposite, ot long-ovate, subentire, obtuse, sessile or sub- 

 petiolate, smooth ; stig. undivided ; caps, mostly pedicellate. Mountains, N. 

 States to Arc. Am. St. C to 12' high. Lvs. often s ightiy petiolate and denti- 

 culate, lower obtuse, middle acnte, and upper acuminate. Fls. smaller than in E. 

 molle, reddish white. 



/?. NUTANS Hornem. St. large, nodding at the summit ; Ivs. oblong, denticulate. 



3 E. palustre L. Minutely tomentous ; st. terete, branching; Ivs. sessile, lance- 

 olate, subdenticulate, smooth, attenuate at base, rather acute, lower ones oppo- 

 site; petals small, erect (acute?), twice longer llun the calyx; sty. included ; 

 stig. clavate; caps, pubescent. In swamps and marshes, Penn. to Arc. Am. W. 

 to Oreg. Sts. 1 to 2f high, very branching. Lvs. mostly alternate, 1 to 3' long, 

 2 to G' wide, entire, or with a few minute teeth. Fls. numerous, rose color. 

 Caps. 2 or 3' long, on short pedicels. Aug. 



?. ALBiFLoRUM Lehm. St. slender, at first simple, branched at top ; Ivs. 

 linear, entire, margin revoluto; caps, canescent. In mud about ponds, N. 

 H. and Can. St. 2 to 3f high. (E. lineare Muhl.) 



4 E. molle Torr. Plant velvety-pubescent; st. terete, straight, erect, branching 

 above ; Ivs. opposite (alternate above), crowded, sessile, mostly entire, oblong- 

 linear, obtusish; petals deeply emarginate, twice longer than the calyx; stig. 

 large, turbinate; caps, elongated, fmbsessile. Swamps, Mass, to N. J., rare. 

 St. 1 to 2f high. Lvs. numerous, 8 to 15 " by 1 to 4 '. Fls. rose color. Caps. 

 3' long. Sept. 



5 E. coloratura Muhl. St. subterete, puberulent, erect, very branching; Ivs. 

 mostly opposite, lanceolate, dent-serrulate, acute, subpetiolate, smooth, often with 

 reddish veins ; pet. small, 2-clett at apex ; cal. carnpanulate: sty. included; stig. 

 clavate ; ovules in a single row. Ditches and wet, shady grounds, British Am. 

 to Ga., W. to Oreg. St. 1 to 3f high, becoming very much branched. Lvs. 2 to 

 4' long, \ as wide, with minute white dots, upper ones alternate and sessile, 

 lower on short petioles. Fls. numerous axillary. Pedicels 1 to 2" in length, 

 ovaries 4 to G", caps. 20", very slender. Petals rose color, twice longer than the 

 sepaK Jl. Sept. Scarcely distinct from the next. 



6 E. tetragonum L. St.4-angled, erect, branched and nearly glabrous; Ivs. ob- 

 long-lanceolate, glandular-serrulate, more or less Recurrent, the lower subpetiolate, 

 petals emarginate. Mts. of N. Car., N. Y. and Can. St. 1 to 2f high, appar- 

 ently winged along the middle by the decurrent Ivs. Petals rose red. Stig. club- 

 shaped, pods pedicellate, puberulent. 



2. JUSSIyE'A, L. (Dedicated to Bernard de Jussieu, founder of the 

 Nat. System.) Calvx tube long, but not produced beyond the ovary; 

 the lobes 4 to 6, leafv, persistent; petals 4 to G, spreading; stamens 8 

 to 12 ; capsule 4 to 6-celled, commonly lengthened, opening between 

 the ribs; seeds very numerous. Herbs with alternate Ivs. and yellow fls. 



