HYDROPHYI.LACEiE. 291 HYDKOPH YLLUM. 



S. OFFICINA'LE. — Leaves ovate-lanceolate, decurrent. A large, coarse- 

 looking but showy exotic, nearly naturalized in our gardens and shrubberies. 

 Whole' plant rough with dense "hairs. Stem 3— 4 feet high, winged by the 

 decurrent leaves, bearing terminal, revolute racemes. Corollas wliite, pink 

 and red, appearing all summer. Root perennial. It abounds with mucilage 

 and has long been regarded as an efficient vulnerary. Comfrey. 



13. HELIOTRO'PIUM. 

 Calyx 5-parted ; corolla hypocrateriform, orifice naked, 

 limb 5-clert, with the sinuses plaited; stamens included; 

 stigma peltate; achenia cohering without .a common recep- 

 tacle, 



Gr. vXioi, the sun, TQfTirM, to turn^ ancient botanists affirm that the flowers 

 of these plants always turn towards the sun. Annual ornamental herbs, none 

 native at the North. 



1. H. EuROPiE'UM. — Herbaceous ; leaves ovate, entire, rugose and 

 tomentose; spikes in pairs. A delicate annual, native of Europe and at the 

 South, cultivated among stove-plants. Stem 8—12 inches high. Flowers 

 white, mostly in 2, terminal, long, scorpoid racemes. European Heliotrope. 



2. H. PeRUVIA'NUM. — shrubby. Leai^es ovate-lanceolate ; JJoMcrs in 

 numerous, aggregated spikes. Native of Peru. A small, elegant green-house 

 shrub, 1 — 2 feet high. Leaves rough, serrulate, twice as long as wide, on 

 short petioles. Flowers small but numerous, very fragrant, white or tinged 

 with purple, Peruvian Heliotrope. 



ORDER XCVI. HYDROPHYLLACEi^. XUe Water-lea/ Tribe. 



Cal. — S-clcff, the sinuses usually with reflexed appendages, persistent. 

 Cor. — 5-lobed, reg-ular, with 10 melliferous scales near the base. 

 Sta.—5, inserted into the base of the corolla and alternate with the lobes. 

 Anth.—'i-ccWed, versatile. [or on stalks from the base of the cavity. 



Oua.— Free, simple, 1-celled.. Sv^'^-sins'le. terminal, bifid. Stigmas 2. Placenta 2, parietal 

 Fr. — Capsule invested with llie ]KTm;nicnt calyx. 



Sds.— Few, crnstaceous. Einbryu cdiiical, in abundant, cartilaginous albumen. 

 American herbs, with alternate (rarely opposite), lobed leaves. Of no known use. 



HYDRO? H'YLLUM. 



Sepals slightly united at base; corolla campanulate, with 5 

 longitudinal, margined, nectariferous grooves inside; stamens 

 exserted ; capsule globose, 2-cellcd, 2-valved, 4-seeded, 3 of 

 them mostly abortive. 



Gr. v^fvg, water, and (^vWov, a leaf Pretty marsh herbs, which in the 

 spring have a quantity of water in each leaf. Lvs. divided, alternate. Fls. 

 corymbose, supra-axillary or terminal. 



1. H. Virgi'nicum. 



P/aw^ nearly smooth ; leaves pinnatifid and pinnate, the segments oval- 

 lanceolate, incisely serrate ; fascicles conglomerate ; peduncles as long as the 

 petioles. An inhabitant of wet or moist woods, N. H. and Vt. Stem a foot 

 high, bearing large, roundish tufts of flowers peculiarly distinguished by their 



