ORDER 82. PLANTAGINACE/E. ^ 



7 li. loiigifolla Ph. St. slender, flexuous. 4-angled; Ivs. linear, shining, revolute l 



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 20'. July. 

 8. itiinix. Leaves lance-linuar, flat, edges not revolute. Miss, and La. 



8 Ii. lanceolata 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 lvs>. oval or oblong, petiolate ; flowers at the summit. 



9 l>. cillata L. St. erect, 4-angled ; Ivs. opposite, ovats to lance-ovate, rounded at 



base, petioles distinct, dilate ; flowers nodding, mostly opposite, in the nppo<r axils, 



large (!'); stamens distinct. Thickets, along stream?. 2 3f. Often branched. .11. 



. tonga. Pet. entire, destitute of cilise ; Ivs. and fls. smaller. Mts., Ky., Tenn 



10 Ii. radkcans 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 vvhorled 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, (i) 

 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. CENTUNOULUS, 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. (T) Very 

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

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



lower opposite ; sep. linear-subulate. Wet, Dl., and S. 16'. 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 coryinbous or racemous. May Aug. Figs. 22, 133. 



1 S. Valera mil 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. ebracte a tus 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 

 lobes 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. 



PLANTAGO, L. PLANTAIN. RIBWORT. Sep. 4, membranous, per- 

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

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



