356 Oedbe 52.— ONAGRACBjE. 



water, S. to Ga., (partly submerged, or in very wet grounds, near Boston, Mass. 

 St. 2 to 3f high,;ibrauchlna angular. Margin of the Ivs. rough, sometimes re- 

 motely and obscurely denticulate. Fls. greenish, inconspiovious. JL — Sept. 

 (Isnardia DC.) 



10 L. polyodrpa Short & Peter. Glabrous, ereci, much branched, and often 

 Stoloniferous; Ivs. lance-linear, gradually acute at each end; fls. apetaloua, 

 axillary, soUtary, with 2 subulate bractlets at base ; caps, i-angled, irwncakd 

 above, tapering below, crowned with the 4-lobed stylopodium. — Swamps, W. 

 States. St. 1 to Sf high. Lvs. 2 to 3' by 2 to 4", ten times longer than the 

 flowers. Aug. — Oct. 



11 L. microodrpa Mx. Glabrous; st. creeping at base, then ascending; he. 

 spaMaie-obovate, minutely denticulate; cal. lobes roundish, acuminate, larger tliah 

 the very small, dbovate capsule ; stig. sessile. — Wet grounds, S. Car. to JPla. St. 

 mostly simple. If high, often with stolons at base. Jl. — Sept. (Isnardia lan- 

 ceolata DC.) 



12 L. capitata Mx. Glabrous, erect, slender; lvs. lanoe-liuear or lance-oblong, 

 obtuse at the sessile base, obtuse or very acute at the apex ; ^fls. sessile, crcmdei 

 in a terminal Iraeted head or spike ; cal. lobes shoraer than the 4-angled capsule. 

 — S. Oar. to Ha. Sts. 2 to Sf high, simple, or with few virgate branches. Lvs. 

 1 to 3' long, the upper linear and taper-pointed. Aug. — Oct. (Isnardia DO.) 



13 L. paMstris Ell. Water Purslain. Prostrate and creeping, smooth, and 

 slightly succulent ; lvs. opposite, ovate-spatulate, acute, tapering at base into a 

 petiole; fls. sessile, solitary; pet. 0, or very small, flesh color; caps, oblong, 

 abrupt at both ends, with 4 green angles ; bractlets 0. — ^In U. S. and Can., creeping 

 in muddy places or floating in water. St. round, reddish, 10 to 18' long. Cal. 

 lobes and sty. very short. Caps. 2" long. Jn. — Sept. (Isnardia L.) 



14 L. natanS'Ell. Creeping or floating, smooth and slightly succulent; lvs. ob- 

 long, tapering to a petiole, or the lower subsessile ; fls. sessile ; cal. lobes triangu- 

 lar-ovate, acute, as long as the yellow petals; ova. with 2 conspiouozis bracteoUs ; 

 fr. 4-angled, tapering to the base. — ^Swamps, S. States. Caps, about 4" long, at 

 first top-shaped. JL — Oct. 



"15 L. spatul^ta Torr. & Gr. Branched, ascending, downy and not sttcc^etii; 

 lvs. oval, tapering to a petiole ; fls. very small, apetakms, sessile ; caps, pubescent, 

 ovate, somewhat 4-sided, smaU. — If. Middle Fla. Plant near If high, difFusdy 

 ' branched from the base. Lvs. and margined petiole about 2' long. 



16 L. arou&ta Walt. Nearly smooth, creeping ; lvs. oblainoeolate, ' tapering to 

 the -sessile base ; Jls. solitary, on u, slender axillary pedwicle, which is twice longer 

 than the lvs. ; petals bright yellow, longer than the lance-linear, spreading sepals ; 

 caps, clavate, finally arcuate, as long as the persistent calyx lobes. — Swamps, 

 Ta. to Ela., along the coast. Sts. 3 to 10' long. Lvs. 10" long. Fls. IQ" broad. 

 May — ^Jl. (Isnardia peduheulosa DO.) 



8. CIRCS'A, L. Enchanter's Nightshade. (Circe was supposed 

 to have used these plants in her enchantments.) Calyx slightly pro- 

 duced above the ovary, deciduous, limb 2-parted ; petals 2, obcordate ; 

 stamens 2, opposite the sepals ; capsule obovoid, uncinate-hispid or 

 pubescent, 2-celled, 2-seeded ; styles united. — If Lvs. opposite. 



1 C. Luteti^na L. St. erect, pubescent above ; lvs. ovate, suboordate, acuminate, 

 slightly repand-deutate, opaque,- longer than the petioles; brcu^ none; fr. re- 

 flexed, hispid-uncinate. — Damp shades and thiojcets, Can. to Car. W. to 111. St. 

 1 to 2f high, sparingly branched, tumid at the nodes. Lvs. dark green, smooth 

 or slightly pubescent, 2 to 4' long, J as wide ; petiole 8 to 15" long. Fls. small, 

 rose color, in long, terminal, axillary racemes. Fr. obcordate, with conspicuous 

 hooks. Jn., Jl, 



2 C. alplna L. Smooth; st. ascending at base, weak; lvs. broad-cordate, mem- 

 branous, dentate, as long as the petioles; braks setaceous; caps, pubescent. — 

 A small, delicate plant, common in wet, rocky woodlands, in mountainous dis- 

 tricts, N. Eng., Brit. Am., W. to Or. . St. diaphanous, juicy, 5 to 10' high. lvs. 



