266 LV. ONAGRACE^. Circ^a. 



high, round, with a strong bark and several branches. Leaves with margin- 

 al veins, 2 — 3' long, ^ — 1' wide. Capsule convex at apex, the angles conspic- 

 uously winged. Sepals large, purplish. Petals large, yellow, showy. Jl. Aug. 



2. L. HiRTELLA. Raf. (L. hirsuta. Ph.) 



Hairy, erect, sparingly branched ; Ivs. alternate, ovate -oblong, sessile, ob- 

 tuse ; Jl. axillary, solitary, pedicellate, with two bracteoles below it ; sejj. nearly 

 as long as the petals ; cap. subglobose, 4 angled and winged. — Moist soils, N. 

 J. to Flor. Stem 1 — 31' high. Leaves numerous, hairy both sides, J — If by 

 2 — 8". Flowers yellow, about f diam. Calyx spreading, and, with the cap- 

 sule, villous. Jn. — Sept. 



3. L. LINEARIS. Walt. (Isnardia. DC.) 



Glabrous, slender, with angular branches ; Ivs. lance-linear, acute at each 

 end ; fls. axillary, solitary, sessile ; pet. obovate-oblong, slightly longer than the 

 sepals, but much shorter than the elongated, obovoid-clavate, 4-sided capsules. — 

 Swamps, N. J. and S. States. An erect, .smooth plant, 1 — 2i high, often send- 

 ing out runners at the base with obovate leaves. Fls. sometimes apetalous. 

 JL— Sept. 



4. L. spH.ffi:R0CARPA. Ell. (Isnardia. DC.) 



Erect, smooth or nearly so ; Ivs. alternate, lanceolate, acute, attenuate at 

 base ; fls. axillary, subsolitary, on very short pedicels ; ^?«?/,. minute or wanting, 

 as well as the bracteoles ; 5*?;?. as long as the small, subglobose capsule. — In 

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

 Stem 2 — 3f high, branching, angular. Margin of the leaves rough, sometimes 

 remotely and obscurely denticulate. Fls. greeni.sh, inconspicuous. Jl. — Sept. 



5. L. POLYCARPA. Short & Peter. 



Glabrous, erect, much branched and often stoloniferous ; Ivs. lance-linear, 

 gradually acute at each end ; fls. apetalous, axillary, solitary, with two subu- 

 late bracteoles at base ; caps. '1-angled, truncated above, tapering below, crown- 

 ed with the 4-lobed stylopodium. — Swamps, Western States ! Stem 1 — 3f high. 

 Leaves 2 — 3' by 2 — 4", ten times longer than the flowers. Aug. — Oct. 



6. L. PALUSTRis. Ell. (Isnardia. Lhin.) Water Pursclain. 

 Prostrate and creeping, smooth and slightly succulent; Ivs. opposite, ovate, 



acute, tapering at base into a petiole; fls. sessile, axillary, solitary; pet. 0, or 

 very small. — In U. S. and Can., creeping in muddy places, or floating in water. 

 Stem round, reddish, 10 — 18' long, often sparingly branched. Leaves, including 

 their slender petioles, about IJ' by J', ovate-.spatulate. Calyx lobes and style 

 very short. Petals when present, flesh-color. Capsule 1 — 2" long, abrupt at 

 each end, with 4 green angles. Jn. — Sept. 



Tribe 2. CIRC^EiE. 



Flower regular, all its parts in 2s. 



7. CIRC^A. 



Circe was supposed to have used these plants in her enchantments. 



Calyx slightly produced above the ovary, deciduous, limb 2-parted • 

 petals 2, obcordate ; stamens 2, opposite the sepals ; capsule obo- 

 void, uncinate-hispid or pubescent, 2-celled, 2-seeded ; styles united. 

 % Lvs. opposite. 



1. C. LuTETiANA. Larger Enchanter^ s-Nightshade. (Fig. 45.) 



St. erect, pubescent above; lvs. ovate, subcordate, acuminate, slightly re- 

 pand-dentate, opaque, longer than the petioles ; hractsnone ; fr. reflexed, hispid- 

 imcinate. — Damp shades and thickets. Can. to Car. W. to 111. ! Stem 1 — 2f 

 high, sparingly branched, tumid at the nodes. Leaves dark green, smooth or 

 slightly pubescent, 2 — i' long, h as wide, petiole 8 — 15" long. Flowers small, 

 rose-color, in long, terminal and axillary racemes. Fruit obcordate, with con- 

 spicuous hooks. Jn. Jl. 



2. C. ALPiNA. Alpine Enckanierh-NigMshadc. 



Smooth ; si. ascending at base, weak ; Im. broad-cordate, membranaceous, 

 dentate, as long as the petioles; bracts setaceous; capsule pubescent. — A small^ 



