CENTUNCULUS. LXXXII. PRIMULACEjE. 387 



3. L. HYBRIDA. Michx. Hybrid Loosestrife. 



Smooth, erect, branched above ; Ivs. narrowly lanceolate, acute at each 

 end, opposite, petioles ciliate, short; fls. nodding; ped. axillary; sta. united in 

 a very short tube at base, with intermediate processes. % Grassy meadows 

 and prairies, Can., N. H. ! to Car., W. to la. ! and 111. Mead. Its stem and 

 flowers resemble those of L. cilia ta, from which species it is chiefly distinguish- 

 ed by its narrower, lanceolate, never cordate leaves, and its more numerous and 

 leafy branches, each of which bears a whorl of 4 leaves and 4 flowers at the 

 end. Stamens with intermediate processes. Jl. 



4. L. Q.CADRIFOLIA. Four-leaved Loosestrife. 



Simple, erect ; Ivs. verticillate, in 4s, rarely in 5s or 3s, sessile, lanceolate, 

 acuminate, punctate ; ped. axillary, 1-flowered, in 4s (3s or 5s) ; pet. oval, ob- 

 tuse. Tj. In low grounds, river banks, Can. to Car. and Ky. Stem 18' high, 

 somewhat hairy, simple, with many whorls of 4 5 leaves, each bearing a flow- 

 er-stalk in its axil. Corolla yellow, with purple lines. Stamens unequal, 

 united at base into a short tube. Anth. purple. Jn. 



5. L. HETEROPHYLLA. Michx. Various-leaved Loosestrife. 



Erect, subsimple ; Ivs. opposite, linear-lanceolate, acute, entire, margin 

 not reflexed, ciliate at base and on the short petiole, lower ones shorter, oval, 

 obovate or even roundish ; distinctly petiolate ; fls. on long peduncles, opposite 

 or apparently quaternate at top of the stem; sta. subequal, with intervening 

 teeth. Hills and woods, Ohio, Clark ! 111. Jcnney ! to Ga. Stem 1218' high, 

 branched from the base if at all. Leaves about 2i' by 5", lower 1' by J', all 

 paler beneath. Flowers very similar to those of L. ciliata. Jn. Jl. 



6. L. LONGIFOLIA. Pursh. (L. revoluta. Nutt.) Prairie Moneywort. 



St. slender, 4-angled, flexuous, branched above ; Ivs. opposite, linear-ob- 

 long, sessile, margin revolute ; fls. opposite or mostly quaternate and terminal 

 on the stem and branches ; sep. lance-linear, acuminate ; pet. longer than the 

 calyx, roundish-ovate, erose-dentate, abruptly acuminate. Common in low 

 prairies, W. States ! The large yellow flowers are very conspicuous among the 

 grasses. Stems 12 20' high, purple. Leaves 2 3' by 2 3", coriaceous, deep 

 green. Flowers numerous, 9" diam., of a brilliant yellow. Anth. large. Jl. 



8. ANAGALLIS. 



Gr. ovaytXao), to laugh ; it is said to be medicinally efficacious in expelling hypochondria. 



Calyx 5-parted ; cor. rotate, deeply 5-parted, longer than the ca- 

 lyx, tube ; sta. 5, hirsute ; anth. introrse ; caps, globose, membra- 

 naceous, circumscissile. Herbs with square stems and (mostly) opposite 

 Ivft. Ped. axillary, solitary. 



A. ARVENSIS. Scarlet Pimpernel. Poor Man's Weather-glass. 



Procumbent, branched ; Ivs. broad-ovate, opposite or ternate, sessile ; ped. 

 longer than the leaves; sep. linear-lanceolate, about equaling the petals; pet. 

 crenate-glandular. A beautiful trailing plant, in fields, roadsides, &c., U. S. 

 (except the colder parts of N. Eng.) and in almost all other countries. Stem 

 6 20' long, with elongated branches, or simple. Leaves 6 S" by 4 6". 

 Flowers opposite, small but beautifuj, with scarlet petals, opening at 8 o'clock, 

 A. M., and closing at 2 P. M., in damp weather not open at all. Jn. Aug. 



9. CENTUNCULUS. 



Calyx 5-parted ; cor. urceolate-rotate, 4-cleft, shorter than the ca- 

 lyx ; sta. 4, beardless, united at base ; caps, globose, circumscissile ; 

 seeds very minute. CD Very diminutive, with, alternate Ivs. Fls. 

 axillary, solitary, subsessile. 



C. MINIMUS. (C. lanceolatus. Michx.) Bastard Pimpernel. 

 Erect, branched ; Ivs. subsessile, ovate or lance-ovate, obtusish, entire, al- 

 ternate, lower opposite ; sep. linear-subulate, equaling the capsule. Wet places, 

 111. Mead ! and Southern States. Scarcely more than 1 2' high (4 6" Rid- 

 dell). Leaves about 2" by 1". Flowers reddish ? Jl. 

 33* 



