436 XCV. HYDROPHYLLACES. FlyDROPHYLLUM. 
cohering without a common receptacle, at length separable.— Herbs 
or shrubs. Spikes unilateral. Flowers never yellow. 
1. H. Evropmum. Heliotrope——Herbaceous; lvs. ovate, entire, rugose and 
tomentose; spikes in pairs.——A delicate annual, native of Europe and 
still growing on the banks of the Shenandoah at Harper’s Ferry! where Nuttall 
saw it in 1818. Cultivated among stove-plants. Stem 8—12’high. Leaves 1— 
2 by 8—15". Flowers white, mostly in 2, terminal, long, scorpoid racemes. § 
2. H. Peruvianum. Peruvian Heliotrope——Shrubby; lws. ovate-lanceolate ; 
jis. in numerous, aggregated spikes.—Native of Peru. A small, elegant green- 
house shrub, 1—2f high. Leaves rough, serrulate, twice as long as wide, on 
short petioles. Flowers small but numerous, very fragrant, white or tinged 
with purple. 
» Orver XCV. HYDROPHYLLACEA.—Hypropnytts. 
- 
Herbs, shrubs or small trees, often hispid. Lvs. alternate, or the lower opposite, often lobed. 
Fis. in circinate racemes or unilateral spikes, rarely axillary and solitary. 
Cal. 5-cleft, the sinuses usually with reflexed appendages, persistent. 
Cor. 5-lobed, regular, with 10 melliferous scales near the base. 
Sta. 5, inserted into the base of the corolla and alternate with the lobes. : 
Anth. 2-celled, versatile. : { ; ; [from the base of the cavity. 
Ova. free, simple, 1-celled. Style single, terminal, bifid. Stigmas 2. Placenta 2, parietal or on stalks 
¥Fr.—Capsule invested with the permanent calyx. nde 
Sds. few, crustaceous. Embryo conical, in abundant, cartilaginous albumen. 
Genera 16, species 75, chiefly American. Of no known use. 
Conspectus of the Genera. 
; : § Placenta large, fleshy, free. .  . Hydrophyliwm. 
appendag’d inside with ( Sta. exserted. ? Placentz on the middle of the valves. Phacelia. 
5 melliferous grooves. ?Stamens included. Sepals very large. . . . Ellisia. 
Corolla ¢ destitute of grooves or scales inside. Stamens as long as the corolla. . . Cosmanthus. 
1. HYDROPHY LLU Mi Pearn 
Gr. bdwp, water, and pvAdov, a leaf; the leaves in Spring hold each a quantity of water. 
Sepals slightly united at base; corolla campanulate, with 5 longi- 
tudinal, margined, nectariferous grooves inside; stamens exserted ; 
capsule globose, 2-celled, 2-valved, 4-seeded, 3 of the seeds mostly 
abortive; placenta fleshy, free— North American herbs. Radical ls. 
on long petioles, pinnately or palmately verned, cauline alternate. Cymes 
scorpord, bractless. 
* Calyx appendaged between the sepals at base. Stamens as long as the corolla. 
1. H. appenpicuLatum. Michx. (Nemophila paniculata. Spreng.) 
Lws. hairy, lower ones pinnatifid, cauline palmately 5-lobed, dentate, lobes 
diverging, and with the long petioles, ped. and cal. hispid; sep. lance-subulate, 
' the appendages at the base ovate, acute, 4 times shorter; cor. glabrous except 
the minute appendages inside; sta. included—@ Mich. to Ia., Plwmmer! and 
Ill. to Va., moist woods and bottoms. Stems 1—14f high, branched. Petioles 
1—4’ long. The leaves are of a singular form, roundish in outline, the broad, 
acute lobes diverging in a stellate manner; teeth mucronate, Calyx 4—5” long, 
appendages deflexed, 1’ long. Corolla blue, on long peduncles. May. 
* * Calyx not appendaged. Filaments nvuch exserted. 
. H. Viraeinicum. Virginian Water-leaf. 
“Plant nearly smooth; /vs. pinnatifid and pinnate, the segments oval- 
lanceolate, incisely serrate; fascicles conglomerate; ped. as long as the peti- 
oles.—%| An inhabitant of wet or moist woods, Can. to Car. and Western 
States. Stem a foot high, bearing large, roundish tufis of flowers peculiarly 
distinguished by their exserted stamens and style, which are twice the length 
of the bell-shaped corollas. Leaves few, on long, clasping petioles, with about 
5 distinct leaflets, the upper 3 more or less confluent at base, all irregularly 
toothed. Corollas varying from white to sky-blue. June. 
3. H. Canapense. Canadian Water-leaf. Burr-flower. , 
Iws. smoothish, palmate, roundish, with 5—7 shallow lobes, unequally 
