266 LV. ONAGRACE^E. CIRCJEA. 



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 ; sep. nearly 

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

 J. to Flor. Stem 1 3f high. Leaves numerous, hairy both sides, 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 2f high, often send- 

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

 JL Sept. 



4. L. SPH.EROCARPA. Ell. (Isnardia. DC.} 



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

 base ; fls. axillary, subsolitary, on very short pedicels ; pet. minute or wanting, 

 as well as th* bracteoles ; sep. 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 aad obscurely denticulate. Fls. greenish, inconspicuous. Jl. Sept. 



5. L. POLYCARPA. Short & Peter. 



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

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

 late bracteoles at base ; caps. 4-angled, truncated above, tapering below, crown- 

 ed with the 4-lobed stylopodiu'm. 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. Linn.} Water Purselain. 

 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 7 long, often sparingly branched. Leaves, including 

 their slender petioles, about 1J' by %', 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^EJB. 



Flower regular, all its parts in 2s. 

 7. CIRC^EA. 



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. LUTETIAN A. Larger Enchanters-Nightshade. (Fig. 45.) 



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

 pand-dentate, opaque, longer than the petioles; bracts none; fr. reflexed, hispid- 

 uncinate. 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 4' long, as wide, petiole 815" long. Flowers small, 

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

 spicuous hooks. Jn. Jl. 



2. C. ALPlNA. Alpine Enchanter's- Nightshade. 



Smooth ; st. ascending at base, weak ; Ivs. broad-cordate, membranaceous, 

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



