ORDER 82. PLANTAGINACE^E. 



7 L. longifolia Ph. St. slender, flexuous, 4-angled; Ivs. linear, shining, revolute at 



edge ; fls. large, in pairs or 4's, terminal on the stem or short branches ; petals broad- 

 ovate, erose-dentate ; anthers large. Low prairies. W. and S. If 2(X. July. 

 0. itnuift. Leaves lance-linear, flat, edges not revolute. Miss, and La. 



8 !L. laiiceolata Walt. St. angular above; leaves lance-oblong, acute at each end, 



subsessile, veiny, ciliate at base ; ped. solitary, axillary. Meadows. 12 18'. July. 

 /3. heterophylla. Lower Ivs. oval or oblong, petiolate ; flowers at the summit. 



9 Ii. ciliiita L. St. erect, 4-angled ; Ivs. opposite, ovate to lance-ovate, rounded at 



ba?e, petioles distinct, ciliate ; flowers nodding, mostly opposite, in the upper axils, 



large (10 ; stamens distinct. Thickets, along streams. 2 3f. Often branched. Jl. 



/3. tonga. Pet. entire, destitute of ciliae ; Ivs. and fls. smaller. Mts., Ky., Tenn. 



10 L. radicans Hook. St. square, long, trailing, rooting at the joints ; br. slender; 

 Ivs. lance-ovate, acute, on long pet. ; fls. small (4"). Swamps, Va., and S. 2 4f. Jl. 



9. ANAGALLIS, L. SCARLET PIMPERNEL. Calyx 5-parted. Cor. 

 rotate, deeply 5-parted, tube 0. Sta. 5, hairy, anth. introrse. Caps, globu- 

 lar, thin, opening all around (pyxis). Herbs with square stems and oppo- 

 site or whorled entire leaves. Pedicels axillary, solitary. Fig. 249. 



A . arvensis L. Procumbent ; Ivs. broad-ovate, sessile, shorter (6 10") than the curved 

 ped. ; sepals lance-linear, as long as the roundish crenate-glandular, red petals. 

 Fields, waysides. The flowers (sometimes blue, Dr. Buel) close at 2 p. M., or on the 

 approach of foul weather ; hence called the Poor Man's Weather-glass. 



10. CENTUNCULUS, L. FALSE PIMPERNEL. Cal. 4-parted. Cor. 

 urceolate-rotate, 4-cleft, shorter than the calyx. Sta. 4, beardless, united 

 at base. Capsules globous, circumscissile. Seeds very minute. (I) Very 

 diminutive, with alternate Ivs. Fls. axillary, solitary, subsessile, white ? 



C. minimus L. St. ascending, branched; leaves subsessile, oval, obtuse, entire, the 

 lower opposite ; sep. linear-subulate. Wet, 111., and S. 1 6'. April July. 



11. SAMOLUS, L. WATER PIMPERNEL. Calyx partly adherent, 5- 

 cleft. Corolla salver-form, 5-cleft. Sta. 5, alternating with 5 scales (sterile 

 filaments). Caps, dehiscent at top by 5 valves, many-seeded. Herbs with 

 alternate Ivs. Flowers corymbous or racemous. May Aug. Figs. 22, 133. 



1 S. Valeraiidl L. (S. floribundus K.) St. simple or branched ; Ivs. obtuse, wedge- 



oval, the lower petiolate ; fls. in a raceme or panicle of racemes, pedicels with a mi 

 nute bract near the middle ; petals longer than the sepals. Wet gravels. 6 12'. 



2 S. ebracteatus Kunth. Erect, leafy below ; Ivs. obovate-spatulate ; fls. racemed, 



ped. bractless ; cor. white, 3 times longer than the calyx (3"). Marshes. Fla., and W. 



ORDER LXXXII. PLANTAGINACE^E. RIBWORTS. 



Herbs rarely shrubby, with radical leaves and the flowers in spikes on 

 scapes. Flowers regular, tetramerous. Stamens 4 2, alternate with the 

 1 "oes of the corolla, and inserted on its tube. Anthers versatile, filaments 

 usually slender and exserted. Fruit a membranous pyxis, with 1, 2, or 

 many albuminous seeds. 



PL ANT A GO, L. PLANTAIN. RIBWORT. Sep. 4, membranous, per- 

 sistent. Cor. limb 4-toothed, spreading, persistent on the fruit. Starneng 

 4 (rarely 2), the long, slender filaments exserted, or in some of the fls. in 



