ONAGRACE^. 



135 



Name in memory of C. D. Ludwig, professor of Botany at Leipsic, in the 

 middle of the last century. Cal. lobes long, lanceolate, persistent. Pet. equal , 

 obcordate, often minute or 0. Caps, short, perforated at top, crowned with 

 the calyx.— Perennial herbs, in wet grounds. Leaves entire. 



1. L. alternifo'lia. 



Erect, branched, nearly or quite smooth ; haves alternate, sessile, lanceo. 

 late, pale beneath; peduncles axillary, solitary, l-flowercd, 2-bracted above 

 the middle ; petals scarcely as large as the spreading, acuminate sepals ; cap. 

 Side large, with 4 winged angles, crowned with the colored calyx. Native of 

 shady swamps. Stem 1—3 feet high, round, with a strong bark, and several 

 branches. Leaves entire, with intermarginal veins, hoary beneath. Ovary 

 square, with membranous angles. Sepals broad and large, often purplish with- 

 in. Petals large, yellow and rather showy. Jl. Aug. Seed-box. 



2. h. sphceroca'rpa. 



Erect, smooth or nearly so ; leaves lanceolate, acute, attenuate at base; floiC' 

 ers a.xilhiry, subsolitary, on very short pedicels; petals minute or 0, as well 

 as the bracteoles ; sepals long as the small capsule. In water, partly submerged, 

 cr in very wet grounds. Leaves rough-edged, sometimes glandular denticu- 

 late. Stem somewhat angular, 2 — 3 tijet high. Flowers greenish, inconspic- 

 uous. July--Sept. 



3. L. PALU'sTRIS. Ell. Isnardia palustris. L. 



Prostrate, creepino-, smooth and slightly succulent; leaves pelioled, opposite, 

 oval, attenuate at base ; flowers sessile, axillary ; petals 0, or very small. An 

 obscure plant of no beauty, creeping in muddy places or floating in v/ater. 

 Stems a foot long, with many leaves and small, greenish flowers ia their asils. 

 Petals when present, flesh-colored. Jn. — Nov. Jl'aLe?- Purslane. 



5. CLA'RKIA. 



Calyx 4-partecl, deciduous; petals 4, unguiculate, 3-lobed 

 or entire, the claws crowned with 2 minute teeth; stamens 

 S; style 1, tiHform; stigma 4-lobed; capsule largest at base, 

 4-celled, 4-valved, many seeded. 



Named in honor of General Clark, the companion of Lewis across the 

 Rock}' Mountains. 



C. pulche'lla. 



Leaves linear-lanceolate; petals large, broad above, long-clawed, with three 

 spreading lobes ; alternate stamens abortive ; capsule pedicillate. Corolla 

 purplish, sometimes white. Native of Oregon. Cultivated in gardens, very 

 pretty and of easy culture. 



6. FU'CHSIA. 



Calyx tubular-infundibuliform, colored, decitluous; petals 



4. in the throat of the calyx, alternate with its segments ; nec- 

 tary an S-furrowed gland ; berry oblong, obtuse, 4-cornered. 



Named in honor of Leonard Fuchs, an excellent German botanist of the 

 loth century. Shrubby plants, of great beauty. 



